Updated on 2022/10/01

写真a

 
YAMAGUCHI Daisuke
 
Organization
Faculty of Natural Science and Technology Assistant Professor
Position
Assistant Professor
External link

Degree

  • 博士(工学) ( 2014.3   岡山大学 )

Research Interests

  • Actuator

  • Ultrasonic motor

  • Extreme Environment

  • Soft Robotics

  • Piezoelectric material

  • レーザ接着

  • 接着

  • Filmotics

  • Polyimide

Research Areas

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Machine elements and tribology

  • Informatics / Mechanics and mechatronics

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Manufacturing and production engineering

Education

  • Okayama University   大学院自然科学研究科   産業創成工学専攻

    2011.4 - 2014.3

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  • Okayama University   大学院自然科学研究科   機械システム工学専攻

    2009.4 - 2011.3

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  • Okayama University   工学部   システム工学科

    2007.4 - 2009.3

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  • Suzuka National College of Technology   機械工学科  

    2002.4 - 2007.3

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Research History

  • Okayama University   Natural Science and Technology, Institute of Academic and Research   Assistant Professor

    2021.4

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  • Okayama University   The Graduate School of Natural Science and Technology   Assistant Professor

    2020.4 - 2021.3

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  • Saitama University   Graduate School of Science and Engineering   Assistant Professor

    2014.4 - 2020.3

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  • 日本学術振興会特別研究員(DC2)

    2013.4 - 2014.3

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Professional Memberships

Committee Memberships

  •   レスキューロボットコンテスト実行委員  

    2021.10   

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  •   World Robot Summit 2020 インフラ災害対応競技委員  

    2020.4   

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  • 一般社団法人 日本機械学会   ロボティクス・メカトロニクス部門広報委員会 幹事  

    2020.4 - 2021.3   

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  • 一般社団法人 日本機械学会   ロボティクス・メカトロニクス部門広報委員会 委員長  

    2019.4 - 2020.3   

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  • 公益社団法人 精密工学会   次世代センサ・アクチュエータ委員会 庶務幹事補佐  

    2019.3   

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  • 一般社団法人 日本機械学会   ロボティクス・メカトロニクス部門広報委員会 副委員長  

    2018.4 - 2019.3   

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  • 公益社団法人 精密工学会   事業部会事業企画委員会第1グループ委員  

    2018.2   

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  • 一般社団法人 日本機械学会   ロボティクス・メカトロニクス部門広報委員会 委員  

    2016.4 - 2018.3   

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  • 公益社団法人 精密工学会   アフィリエイト委員  

    2016.3   

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  • 公益社団法人 精密工学会   事業企画委員会 幹事  

    2016.3 - 2018.2   

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  • 公益社団法人 精密工学会   次世代センサ・アクチュエータ委員会 庶務幹事  

    2016.3 - 2018.2   

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Papers

  • Displacement Sensing of an Active String Actuator Using a Step-Index Multimode Optical Fiber Sensor Reviewed

    Weihang Tian, Shuichi Wakimoto, Takefumi Kanda, Daisuke Yamaguchi

    Sensors   22 ( 9 )   3232 - 3232   2022.4

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:MDPI AG  

    A thin McKibben artificial muscle is a pneumatic actuator with an outer diameter of only 1.8 mm. We fabricated a string-shaped actuator called an “active string actuator,” which achieves a high contractile displacement by accumulating thin McKibben artificial muscles. To control the displacement, the length of the active string actuator should be estimated. However, this is difficult because bulky and rigid sensors are unsuitable for the sensor element of the active string actuator. Therefore, in this study, we propose a new sensing method for estimating the length of an active string actuator. The proposed sensing system is simple and comprises only three components: a step-index multimode optical fiber, a light emitter, and a light receiver. A step-index multimode optical fiber was combined with the active string actuator, and the length was estimated from the change in the amount of light propagating in the optical fiber when the active string actuator was driven. Fundamental experiments were conducted in this study, and the results demonstrated that the optical fiber sensor value changed with the actuator length. This suggests that it is possible to estimate the displacement of an active string actuator using an optical fiber sensor.

    DOI: 10.3390/s22093232

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  • Fabrication of a Polyimide Film Pneumatic Actuator by Molding and Welding Processes Reviewed

    Daisuke Yamaguchi, Tatsuya Hanaki, Yuji Ishino, Masaya Takasaki, Takeshi Mizuno

    Actuators   10 ( 8 )   177 - 177   2021.7

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:MDPI AG  

    The bellows pneumatic actuator, which is made by folding a non-stretch film, has been proposed for various applications because it is easy to fabricate and is extremely thin and light. However, it has subpar durability performance, especially in the folded part of the film. In this study, we propose an actuator with a pod structure that possesses high design flexibility and is free from folding. A method of molding a pod structure on a polyimide film was established and a pneumatic actuator was successfully fabricated by using PI films. Two types of PI film pneumatic actuators with the same curvature, bellows type, and pod type were fabricated. Both were confirmed to have equivalent output characteristics. The bending angle and generated torque of the pod-structure actuator were 34° and 3.3 mNm, respectively. In addition, the pod structure has approximately twice the durability of the bellows structure. By using the fabrication method proposed in this paper, it is possible to realize an air chamber (i.e., an actuator) that has both high durability and bending motion.

    DOI: 10.3390/act10080177

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  • Stabilization of magnetic suspension system by a reset element (Adjustment of vibration attenuation characteristic) Reviewed

    Yuji ISHINO, Takeshi MIZUNO, Masaya TAKASAKI, Daisuke YAMAGUCHI

    Transactions of the JSME (in Japanese)   86 ( 891 )   20 - 00015   2020.11

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:Japan Society of Mechanical Engineers  

    DOI: 10.1299/transjsme.20-00015

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  • Concept and Prototype of Soft Actuator for Liquid Nitrogen Temperature Environments Reviewed

    Daisuke Yamaguchi, Tatsuya Hanaki, Yuji Ishino, Masayuki Hara, Masaya Takasaki, Takeshi Mizuno

    Journal of Robotics and Mechatronics   32 ( 5 )   1019 - 1026   2020.10

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Fuji Technology Press Ltd.  

    A prototype of a soft actuator for extreme environments was fabricated, and driven in a cryogenic temperature environment. Previous soft actuators cannot be used for robots in extreme environments because resin, the main fabrication material, exhibits weak environmental characteristics. Therefore, this study proposes the application of polyimide (PI) films to soft actuators. PI is characterized by excellent environmental resistance. However, the welding of PI is difficult because of its high resistance. In this study, a welding method was developed for PI films. This method does not require pretreatment, or the use of adhesives or additives to reduce resistance. Hence, an actuator that utilizes all the characteristics of PI was realized. The actuator was characterized in a cryogenic environment, which is one of the extreme environments, and was successfully driven at a liquid nitrogen temperature of 78 K. This proposed technology is not limited to cryogenic environments and is expected to provide extreme environmental resistance to existing soft robots.

    DOI: 10.20965/jrm.2020.p1019

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  • Suspension Characteristics of Differentially Operated AC Magnetic Suspension System Using Magnetic Resonant Coupling Reviewed

    Arifur RAHMAN, Takeshi MIZUNO, Yuji ISHINO, Masaya TAKASAKI, Daisuke YAMAGUCHI

    Journal of the Japan Society of Applied Electromagnetics and Mechanics   28 ( 2 )   94 - 100   2020.10

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Japan Society of Applied Electromagnetics and Mechanics  

    DOI: 10.14243/jsaem.28.94

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  • Development of bilateral operation system for the assembly of magnetized components Reviewed

    Ryu MONJIYAMA, Takeshi MIZUNO, Yuji ISHINO, Masaya TAKASAKI, Daisuke YAMAGUCHI

    Transactions of the JSME (in Japanese)   86 ( 888 )   20 - 00004   2020.8

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:Japan Society of Mechanical Engineers  

    DOI: 10.1299/transjsme.20-00004

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  • Vibration control of cryopump with an active dynamic vibration absorber Reviewed

    T. Mizuno, T. IIda, Y. Ishino, M. Takasaki, M. Hara, D. Yamaguchi, T. Kano

    Transactions of the JSME   85 ( 873 )   18-00461   2019.5

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    DOI: 10.1299/transjsme.18-00461

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  • Realization of Stable Trajectory in Mass Measurement System Using Relay Feedback of Velocity and Restoring Force Compensation Reviewed

    T. Mizuno, K. Nishizawa, M. Takasaki, Y Ishino, M. Hara, D. Yamaguchi

    SICE Journal of Control, Measurement, and System Integration   12 ( 3 )   68 - 75   2019.5

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    DOI: 10.9746/jcmsi.12.68

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  • Stabilization of Magnetic Suspension System by Using Only a First-Order Reset Element without a Derivative Element Reviewed

    Yuji Ishino, Takeshi Mizuno, Masaya Takasaki, Daisuke Yamaguchi

    Actuators   8 ( 1 )   24 - 24   2019.3

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:MDPI AG  

    The stabilization of a magnetic suspension system is achieved by using a low-pass filter (LPF) with a nonlinear integrator without any other element. A proportional-derivative (PD) control is commonly used as the simplest method of stabilizing a magnetic suspension system. Meanwhile, a first-order reset element (FORE) was applied to improve transient characteristics. The original FORE was a first-order LPF with a nonlinear reset integrator element. A magnetic suspension system cannot be stabilized by a linear LPF, nor the original FORE. In this work, the reset conditions of the FORE were modified for magnetic suspension. This modified FORE succeeded in stabilizing a magnetic suspension system. The efficacy of the modified FORE was demonstrated by simulations and experiments. A single degree of freedom magnetic suspension system was used in the experiment.

    DOI: 10.3390/act8010024

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  • Modeling and Validation of Vertical Direction Force Estimation with a Three-Dimensional Force Measurement Instrument Based on a Zero-Compliance Mechanism Reviewed

    Md Nahiyan, Takeshi Mizuno, Masaya Takasaki, Yuji Ishino, Masayuki Hara, Daisuke Yamaguchi

    Sensors   19 ( 4 )   799 - 799   2019.2

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:MDPI AG  

    The principle of a zero-compliance mechanism was used to develop a three-dimensional force measurement instrument. In each axis, the point of force is suspended by a zero-compliance mechanism. A vertical axis force estimation operation imitates the structure of a double series magnetic suspension system. An electromagnet directly controls the movement of the first suspended object (floator), which is denoted as a detection point, and indirectly controls the motion of the second floator, which is denoted as a point of force. Indirect control of the point of force is executed by the attractive force of a permanent magnet that is fixed to the bottom part of the detection point. To achieve zero-compliance, a Proportional-Integral-Derivative (PID) control is applied to the point of force, and to make the system stable, a Proportional-Derivative (PD) control is also applied to the detection point. In such suspension conditions, when force is exerted on the point of force, the displacement of the second floator is regulated to maintain its primary position while the detection point displaces in proportion to the applied force. Thus, a zero-compliance condition is maintained at the point of force, and the external force is measured from the linear displacement of the detection point. To restrict the motions of the detection point and the point of force in translation only, they are supported with leaf springs. This paper presents the modeling of the vertical direction force measurement operation of the developed three-axis force estimation instrument, and the theoretical analyses were validated by experiments of force measurement in both the millinewton and micronewton ranges.

    DOI: 10.3390/s19040799

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  • Design and control of active vibration isolation system with an active dynamic vibration absorber operating as accelerometer Reviewed

    Syed Mamun R Rasid, Takeshi Mizuno, Yuji Ishino, Masaya Takasaki, Masayuki Hara, Daisuke Yamaguchi

    Journal of Sound and Vibration   438   175 - 190   2019.1

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  • Lateral vibration suppression by varying stiffness control in a vertically active magnetic suspension system Reviewed

    Asief Javed, Takeshi Mizuno, Masaya Takasaki, Yuji Ishino, Masayuki Hara, Daisuke Yamaguchi

    Actuators   7 ( 2 )   1 - 13   2018.6

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    Reduction of vibration in passively supported lateral directions by varying stiffness control is discussed in a vertically active magnetic suspension system. In the target system, one pair of electromagnets is arranged in differential driving mode to actively control the vertical motion of the floator. Usually the floator is prone to vibrate in the lateral direction because it is passively supported by virtue of the edge effect of the electromagnets. In this work, such vibrations are reduced by incrementing or decrementing the currents simultaneously during vibration without changing the vertical position of the floator. This control strategy is implemented in a developed apparatus where an iron ball is suspended by differentially operated electromagnets without any mechanical contact. Experiments are carried out, and the results show the reduction of lateral vibrations without changing the vertical position of the floator.

    DOI: 10.3390/act7020021

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  • Force Measurement Using Zero-Compliance Mechanism Reviewed

    Takeshi MIZUNO, Yuji ISHINO, Hiroki KAWADA, Yoichiro HAYASHI, Masaya TAKASAKI, Masayuki HARA, Daisuke YAMAGUCHI

    SICE Journal of Control, Measurement, and System Integration   11 ( 4 )   341 - 348   2018.6

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  • 二自由度制御型並列多重磁気浮上システムの基本特性 Reviewed

    成澤慶宜, 水野 毅, 髙﨑正也, 石野裕二, 原正之, 山口大介

    日本機械学会論文集   84 ( 861 )   2018.5

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  • Development of Three-Dimensional Force Measurement Instrument Using Zero-Compliance Mechanism Reviewed

    Md .Helal An NAHIYAN, Takeshi MIZUNO, Masaya TAKASAKI, Yuji ISHINO, Masayuki HARA, Daisuke YAMAGUCHI

    Journal of the Japan Society of Applied Electromagnetics and Mechanics   26 ( 1 )   172 - 177   2018.5

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  • 共通磁極を有する3自由度磁気浮上機構の開発(第一報:実験装置の試作) Reviewed

    山口 大介, 石野裕二, 水野毅, 髙﨑正也, 原正之, 山口大介

    日本AEM学会誌   26 ( 1 )   178 - 184   2018.5

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  • Validation of multi-dimensional force measurement using zero-compliance mechanism Reviewed

    Md Helal An Nahiyan, Takeshi Mizuno, Masaya Takasaki, Yuji Ishino, Masayuki Hara, Daisuke Yamaguchi

    Journal of Advanced Mechanical Design, Systems and Manufacturing   12 ( 2 )   2018

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    A novel force measurement instrument is designed and fabricated to validate multi-dimensional force measurement using zero compliance mechanism. In each axis, there is a point of force and a detection point for zero-compliance force measurement. Both the detection point and the point of force are suspended in series and attached with the base frame through leaf springs. When external force is applied at the point of force, it moves from its original position. The motion of the point of force can be regulated by displacing the detection point in the same or opposite direction of the applied force. The control system is designed and implemented to control the movement of the point of force and the detection point in vertical and horizontal direction force measurement. The effect of applied force on the point of force is cancelled to maintain its position by displacing the detection point. The motion of the detection point is controlled in such a way that it displaces proportionally to the applied force. Thus, applied force can be estimated from the displacement of the detection point and zero-compliance is accomplished at the point of force. The effectiveness of the proposed instrument in multi-dimensional force measurement is demonstrated by the experimental results of the horizontal and vertical direction force measurement with good linearity and almost zero interference.

    DOI: 10.1299/jamdsm.2018jamdsm0038

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  • Development of a three-degree-of-freedom control magnetic suspension system using laterally control flux-path mechanisms Reviewed

    ISHIBASHI Naoki, MIZUNO Takeshi, ISHINO Yuji, TAKASAKI Masaya, YAMAGUCHI Daisuke

    Transactions of the JSME (in Japanese)   2018

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    Language:Japanese   Publisher:一般社団法人 日本機械学会  

    <p>A magnetic suspension system with three flux-path control mechanisms are developed to achieve three-dimensional positioning of the suspended object (floator). In the flux-control mechanism, a ferromagnetic control plate is located in the lateral direction of the magnetic source (permanent magnet). It was shown that the attractive force acting on the floator could be varied by moving the control plate in the vertical direction. In addition, the lateral force was generated by using two control plates located on both sides of the floator and moving them differentially. In this work, an apparatus is fabricated which has three flux-path control mechanisms. The configurations of the apparatus are described. Stable suspension is achieved and basic characteristics are studied. In addition, 3-degree-of-freedom (3-DOF) control suspension is achieved by moving three control plates individually. The 3-DOF control is evaluated by moving the floator in circular orbits.</p>

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  • リレー制御を利用した質量測定における速度検出の遅れについての検討と補正式の導出 Reviewed

    石橋尚宜, 水野 毅, 石野裕二, 髙﨑正也, 山口大介, 原正之, 渡邊怜

    日本機械学会論文集   83 ( 849 )   16-00404   2017.5

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  • 二自由度制御形並列多重磁気浮上の実現 Reviewed

    成澤慶宜, 水野 毅, 髙﨑正也, 原正之, 山口大介, 石野裕二

    日本機械学会論文集   83 ( 848 )   16-00512   2017.4

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  • Development of a Compact Axial Active Magnetic Bearing with a Function of Two-Tilt-Motion Control Reviewed

    Yuji Ishino, Takeshi Mizuno, Masaya Takasaki, Masayuki Hara, Daisuke Yamaguchi

    Actuators   6 ( 2 )   14 - 14   2017.3

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:MDPI AG  

    DOI: 10.3390/act6020014

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  • The Proposal of Magnetic Suspension using Laterally Control Flux-Path Mechanism Reviewed

    Naoki Ishibashi, Takeshi Mizuno, Yuji Ishino, Daisuke Yamaguchi, Masayuki Hara, Masaya Takasaki, Kazuki Yamada

    Actuators   6 ( 1 )   11 - 11   2017.3

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    DOI: 10.3390/act6010011

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  • 超音波振動子と対向面を用いたポンプ(第1報:ポンプ効果の観測) Reviewed

    品田裕壮, 石野裕二, 山口大介, 原正之, 髙﨑正也, 水野毅

    日本機械学会論文集   83 ( 845 )   16-00278   2017.1

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  • Design and Fabrication of an Enlarged Wind Tunnel System for Spinning Body Using Magnetic Suspension Reviewed

    Shahajada Mahmudul Hasan, Takeshi Mizuno, Masaya Takasaki, Yuji Ishino, Masayuki Hara, Daisuke Yamaguchi

    Journal of the Japan Society of Applied Electromagnetics and Mechanics   24 ( 3 )   264 - 270   2016.9

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    DOI: 10.14243/jsaem.24.264

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  • Proposal of lateral vibration control based on force detection in magnetic suspension system Reviewed

    Asief Javed, Takeshi Mizuno, Masaya Takasaki, Yuji Ishino, Masayuki Hara, Daisuke Yamaguchi

    INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS   52 ( 1-2 )   223 - 229   2016

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:IOS PRESS  

    A method of suppressing vibration in lateral directions is investigated based on varying stiffness strategy. A vertically controlled magnetic suspension system is often subjected to vibration in lightly damped lateral directions. In this paper, a novel approach is proposed to detect the lateral displacement of such magnetic suspension system, and how this displacement can be used to reduce vibration by varying stiffness control is presented. The principle of edge effect is applied to detect the lateral displacement in a magnetic suspension system operated in differential mode. A switching stiffness control and a modified control strategies are used to vary the stiffness of the system in order to reduce lateral vibration. Several experiments are carried out to validate the efficiency of the proposed method.

    DOI: 10.3233/JAE-162064

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  • A study on temperature dependence of an ultrasonic motor for cryogenic environment Reviewed

    Masahiro Nakazono, Takefumi Kanda, Daisuke Yamaguchi, Koichi Suzumori, Yuya Noguchi

    JAPANESE JOURNAL OF APPLIED PHYSICS   54 ( 7 )   07HE15   2015.7

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:IOP PUBLISHING LTD  

    In this study, we have examined the temperature dependence of an ultrasonic motor for a cryogenic environment. When we use an ultrasonic motor at low temperatures, thermal stress is induced at the ultrasonic transducer owing to the difference in temperature. Thus, the preload for the transducer needs to be regulated for a cryogenic environment. By finite element method (FEM) analysis, we have simulated the thermal stress at piezoelectric elements of the transducer. We have designed the transducer consisting of a body and a nut made of SUS304, and a bolt made of titanium. We have fabricated and evaluated the transducer at temperatures from 4.5 to 293 K. To evaluate the temperature dependence of the relationship between the preload and the thermal stress, we have measured the clamping torque and admittance. The optimal clamping torque shows a low-temperature dependence from 4.5 to 293 K. We have also evaluated the performance of an ultrasonic motor of the transducer. The ultrasonic motor can be driven at temperatures from 4.5 to 293K without the regulation of the preload of the transducer. (C) 2015 The Japan Society of Applied Physics

    DOI: 10.7567/JJAP.54.07HE15

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  • Proposal of Pump Using Ultrasonic Transducer and Opposing Surface Reviewed

    H. Shinada, Y. Ishino, M. Hara, D. Yamaguchi, M. Takasaki, T. Mizuno

    Physics Procedia   70   76 - 79   2015

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Elsevier BV  

    DOI: 10.1016/j.phpro.2015.08.046

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  • An ultrasonic motor using a titanium transducer for a cryogenic environment Reviewed

    Dai Takeda, Daisuke Yamaguchi, Takefumi Kanda, Koichi Suzumori, Yuya Noguchi

    Japanese Journal of Applied Physics   52 ( 7 )   07HE13   2013.7

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    We have fabricated an ultrasonic motor using a titanium transducer. This motor is for driving in the cryogenic temperature condition with a highly intense magnetic field. Titanium has low magnetic permeability and a thermal expansion coefficient close to that of lead zirconate titanate (PZT). These features mean that a transducer made of titanium has good properties for use in such an environment. We have fabricated and evaluated the ultrasonic motor in a cryogenic environment and an intense magnetic field. We have simulated the thermal stress applied to PZT in consideration of nonlinear material properties in the cryogenic environment. The thermal stress of the titanium transducer is smaller than that of the SUS304 transducer. Moreover, we have achieved driving of the ultrasonic motor at 4.5 K. Additionally, we have confirmed that there is little effect of the intense magnetic field on the driving of the motor. © 2013 The Japan Society of Applied Physics.

    DOI: 10.7567/JJAP.52.07HE13

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  • Light-driven actuator using hydrothermally deposited PLZT film Reviewed

    Daisuke Yamaguchi, Akimasa Tonokai, Takefumi Kanda, Koichi Suzumori

    IEEJ Transactions on Sensors and Micromachines   133 ( 8 )   330 - 336   2013

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    Light-driven actuators result in the miniaturization of micro-devices because such actuators can be driven by a non-contact energy supply. PLZT is a ferroelectric material that exhibits a photostrictive effect. We have succeeded in driving a photoresponse actuator by using the PLZT film. The PLZT film was deposited on a titanium substrate by using the hydrothermal method. The PLZT film was evaluated by x-ray diffraction and piezoelectricity. The actuator has a simple structure in which an indium tin oxide (ITO) transparent electrode is deposited on the surface of the PLZT film. The actuator is driven by the ultraviolet (UV) light. To confirm the driven phenomenon, the photoresponse drive was evaluated by measuring the displacement, electric current and surface temperature. As an example of a light-driven application using the PLZT film actuator, we also fabricated and evaluated a light-driven valve. We have succeeded in changing the flow rate when the intensity of the UV light increased. © 2013 The Institute of Electrical Engineers of Japan.

    DOI: 10.1541/ieejsmas.133.330

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  • Ultrasonic motor using two sector-shaped piezoelectric transducers for sample spinning in high magnetic field Reviewed

    Daisuke Yamaguchi, Takefumi Kanda, Koichi Suzumori, Kazuya Fujisawa, Kiyonori Takegoshi, Takashi Mizuno

    Journal of Robotics and Mechatronics   25 ( 2 )   384 - 391   2013

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Fuji Technology Press  

    This paper presents the design, fabrication process, and evaluation of an ultrasonic motor for sample spinning in a high magnetic field of solid-state Nuclear Magnetic Resonance (NMR). To decrease effects of the magnetic field on rotation, all motor components are made of materials that have low magnetic permeability. The motor, including the sample casing, is a maximum 31 mm in diameter and 50 mm high. The motor has two sector-shaped piezoelectric transducers. One transducer generates two different vibration modes, longitudinal and flexural, when two sinusoidal voltages are applied to transducers. To confirm that transducers can be driven in a high magnetic field, the effect of the magnetic field on the transducer was evaluated. The motor was driven at a frequency of 329.0 kHz. The maximum rotation speed and starting torque were 1.50 × 103 rpm and 26 μ Nm when applied voltage was 40 Vp-p. The rotation speed, controlled by a proportional-integral control system, was 1.20 × 103 rpm in a 7.0-T magnetic field. The motor was also applied to the sample spinning system of a high-resolution NMR spectrometer. We succeeded in obtaining 1 H-NMR signals of H2 O. The motor can therefore be used for a sample spinning system in a high magnetic field.

    DOI: 10.20965/jrm.2013.p0384

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  • An ultrasonic motor for cryogenic temperature using bolt-clamped Langevin-type transducer Reviewed

    Daisuke Yamaguchi, Takefumi Kanda, Koichi Suzumori

    SENSORS AND ACTUATORS A-PHYSICAL   184   134 - 140   2012.9

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    In this study, a small ultrasonic motor driven under cryogenic temperature conditions has been fabricated and evaluated.
    Since transducer performance generally decreases at cryogenic temperatures, we designed and fabricated a bolt-clamped Langevin-type transducer for operation at cryogenic temperature. We simulated the influence of thermal stress on the transducer. The results from simulation were used to design the transducer, and it was then used to fabricate an ultrasonic motor for cryogenic temperature. The maximum diameter and the height of the motor are 30 mm and 38.7 mm.
    To enable the motor to be driven at cryogenic temperature, we evaluated the relationship between the contact pre-load and the lowest rotatable temperature. The motor's driving performance was evaluated at both room temperature and cryogenic temperatures. In a 4.5 K helium gas ambient, the rotation speed and starting torque were 133 rpm and 0.03 mu N m when the applied voltage was 50 Vp-p. (C) 2012 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.sna.2012.06.024

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  • An Ultrasonic Motor for Use at Ultralow Temperature Using Lead Magnesium Niobate-Lead Titanate Single Crystal Reviewed

    Daisuke Yamaguchi, Takefumi Kanda, Koichi Suzumori, Masataka Kuroda, Dai Takeda

    JAPANESE JOURNAL OF APPLIED PHYSICS   51 ( 7 )   07GE09   2012.7

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    In this study, an ultrasonic motor for use at ultralow temperatures has been fabricated and evaluated. The motor has a bolt-clamped Langevin-type transducer using lead magnesium niobate-lead titanate (PMN-PT) single crystal. The transducer is proposed as an oscillator for use at ultralow temperatures by simulation of the thermal stress and evaluation of the pre-load. The thermal effect of the transducer was evaluated when the temperature was changed. As a result, the pre-load of the transducer was concluded to be affected by thermal stress. In addition, the ultrasonic motor using the transducer was fabricated and evaluated. By adjusting the contact pre-load between the rotor and the transducer, the motor has successfully rotated at an ultralow temperature. The rotation speed was 144 rpm at 4.4 K when the applied voltage was 150 Vp-p. This rotation speed is larger than that of previous same size actuators that can be used at ultralow temperatures. (C) 2012 The Japan Society of Applied Physics

    DOI: 10.1143/JJAP.51.07GE09

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  • Bolt-Clamped Langevin-Type Transducer for Ultrasonic Motor used at Ultralow Temperature Reviewed

    Daisuke Yamaguchi, Takefumi Kanda, Koichi Suzumori

    JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING   6 ( 1 )   104 - 112   2012

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    Ultralow temperature environments are important for advanced scientific research areas, for example, chemical analysis technology. Some devices need to be operated in an ultralow temperature environment. However, actuators used in such an environment have low output power. As a result, some applications in an ultralow temperature environment have limited functions. This research aims to achieve a piezoelectric actuator having high output power at an ultralow temperature. A bolt-clamped Langevin-type transducer for an ultrasonic motor used in an ultralow temperature environment is proposed. The piezoelectric materials used in the transducer are affected by thermal stress when the temperature decreases from room temperature to an ultralow one. As a result, the materials break down or the performance of the transducer decreases. Thermal stress was simulated with the finite element method using some non-linear properties of materials in the transducer. The influence of the stress was evaluated by driving a transducer at an ultralow temperature obtained by using helium gas. An ultrasonic motor for use at an ultralow temperature was fabricated and evaluated. The maximum diameter and the height of the motor are 22 and 30.5 mm, respectively. The motor was successfully rotated at an ultralow temperature.

    DOI: 10.1299/jamdsm.6.104

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Books

  • ポリイミドの高機能設計と応用技術

    山口大介( Role: Contributor ,  第7章第6節 ポリイミドフィルムの溶着技術によるソフトアクチュエータの開発)

    株式会社技術情報協会  2022.8  ( ISBN:9784861048876

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  • 極限環境下での作業用ロボットなどへの可能性を持った空圧ソフトアクチュエータの開発

    山口 大介( Role: Contributor ,  極限環境下での作業用ロボットなどへの可能性を持った空圧ソフトアクチュエータの開発)

    株式会社技術情報協会  2017.3 

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MISC

  • アフェリエイトフェス2020オンライン開催報告

    山口大介

    精密工学会誌   87 ( 11 )   878 - 880   2021.11

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    Authorship:Lead author   Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (other)  

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  • 極限環境用ソフトロボットFilmoticsの紹介 Invited

    山口大介

    油空圧技術   57 ( 2 )   2018.2

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  • On switching stiffness control in partially active magnetic bearings

    2016 ( 97 )   99 - 103   2016.12

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  • Frequency Characteristic of Surface Acoustic Wave Tactile Display

    115 ( 512 )   11 - 14   2016.3

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  • 極限環境にロボットを

    山口大介

    埼玉新聞,サイ・テクこらむ   2015.12

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  • 特殊環境下用超音波モータの開発

    山口大介, 神田岳文

    超音波テクノ   27 ( 5 )   10 - 12   2015

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  • 圧電単結晶基板を用いた極低温用超音波モータ

    神田岳文, 山口大介

    超音波テクノ   26 ( 2 )   44 - 47   2014

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  • 会員企業を訪ねて 第3回 株式会社化繊ノズル製作所“直径数μmの超微細孔,一品一芸の融合で究極のものづくり”

    山口大介, 神田岳文

    精密工学会ホームーページ   2011

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Presentations

  • Structure of Shape Memory Polymer Sleeve for an Endoscope Steering Mechanism using a 3D printer

    Haruki NAKANO, Shuichi WAKIMOTO, Takefumi KANDA, Daisuke YAMAGUCHI

    2022 JSME Annual Conference  2022.9.14 

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    Event date: 2022.9.11 - 2022.9.14

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • Fundamental characteristics of string-shaped actuators configured with multiple shape memory alloy wires

    Yoshinori MIYAKE, Shuichi WAKIMOTO, Daisuke YAMAGUCHI, Takefumi KANDA

    2022 JSME Annual Conference  2022.9.12 

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    Event date: 2022.9.11 - 2022.9.14

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • Examination and Characterization of Film Actuator with Texturing on Polyimide Film

    Kazutaka SATO, Daisuke YAMAGUCHI, Shuichi WAKIMOTO, Takefumi KANDA

    2022 JSME Annual Conference  2022.9.12 

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    Event date: 2022.9.11 - 2022.9.14

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • Study on piezoelectric transducers for cryogenic environment with a preload mechanism using thermal stress

    Takefumi Kanda, Kairi Yagi, Daisuke Yamaguchi, Shuichi Wakimoto

    The Japan Society for Precision Engineering Annual Autumn Meeting  2022.9.7 

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    Event date: 2022.9.7 - 2022.9.9

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • Evaluation of textured actuator by changing of textured structure

    Kazutaka SATO, Yutaro TANAKA, Daisuke Yamaguchi, Shuichi Wakimoto, Takefumi Kanda

    2022 JSME CONFERECE ON ROBOTICS AND MECHATRONICS  2022.6.3 

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    Event date: 2022.6.1 - 2022.6.4

    Language:Japanese   Presentation type:Poster presentation  

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  • Study on Metamaterial Structure for Particle Manipulation Device

    Ao FUJIOKA, Fumiya TAKAKI, Takefumi KANDA, Shuichi WAKIMOTO, Daisuke YAMAGUCHI

    2022 JSME CONFERECE ON ROBOTICS AND MECHATRONICS  2022.6.3 

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    Event date: 2022.6.1 - 2022.6.4

    Language:Japanese   Presentation type:Poster presentation  

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  • Prototype of Micro Mobile Robot Using Polyimide Film Actuator

    Yutaro TANAKA, Daisuke YAMAGUCHI, Shuichi WAKIMOTO, Takefumi KANDA

    2022 JSME CONFERECE ON ROBOTICS AND MECHATRONICS  2022.6.3 

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    Event date: 2022.6.1 - 2022.6.4

    Language:Japanese   Presentation type:Poster presentation  

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  • Proposal of an Endoscope Steering Mechanism with Curvature Fixation Function using Shape Memory Polymer

    Haruki NAKANO, Shuicni WAKIMOTO, Takefumi KANDA, Daisuke YAMAGUCHI

    2022 JSME CONFERECE ON ROBOTICS AND MECHATRONICS  2022.6.3 

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    Event date: 2022.6.1 - 2022.6.4

    Language:Japanese   Presentation type:Poster presentation  

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  • Report of Plant Disaster Prevention Challenge in World Robot Summit 2020

    Masayuki OKUGAWA, Yoshikazu OHTSUBO, Takeshi AOKI, Daisuke YAMAGUCHI, Yoshito OKADA, Shota CHIKUSHI, Yuichiro TODA, Hikaru NAGANO, Yudai HASUMI, Daisuke HIROOKA

    2022 JSME CONFERECE ON ROBOTICS AND MECHATRONICS  2022.6.2 

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    Event date: 2022.6.1 - 2022.6.4

    Language:Japanese   Presentation type:Poster presentation  

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  • Surface processing condition of an optical fiber sensor combined with a curved artificial muscle

    Weihang TIAN, Kazuya NAGAOKA, Shuichi WAKIMOTO, Daisuke YAMAGUCHI, Takefumi KANDA

    The Proceedings on Spring Conference of Japan Fluid Power Society 2022  2022.5.26 

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    Event date: 2022.5.26 - 2022.5.27

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • Study on Cylindrical Mixer using Ultrasonic Oscillation

    Takefumi KANDA, Hiroaki ISHIZUKA, Hideaki ONODA, Shuichi WAKIMOTO, Daisuke YAMAGUCHI, Shin-ichiro KAWASAKI, Tatsuya FUJII

    The 34th Symposium on Electromagnetics and Dynamics  2022.5.12 

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    Event date: 2022.5.11 - 2022.5.13

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • レーザを用いたポリイミドフィルム同士の溶着条件の検討

    森垣遼, 山口大介, 脇元修一, 神田岳文

    2022年度精密工学会春季大会学術講演会  2022.3.17 

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    Event date: 2022.3.15 - 2022.3.17

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • ポリイミド製空気室を用いた空圧ワブルモータの試作

    平賀暉章, 山口大介, 脇元修一, 神田岳文

    2022年度精密工学会春季大会学術講演会  2022.3.15 

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    Event date: 2022.3.15 - 2022.3.17

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • ポリイミドフィルム溶着におけるラピッドプロトタイピングとソフトアクチュエータへの応用

    長﨑あかり, 山口大介, 脇元修一, 神田岳文

    2022年度精密工学会春季大会学術講演会  2022.3.15 

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    Event date: 2022.3.15 - 2022.3.17

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • Characterization of IPMC Sensor Combined with Bending Type Pneumatic Soft Actuator

    Masato SAKUMA, Shuichi WAKIMOTO, Takefumi KANDA, Daisuke YAMAGUCHI, Tetsuya HORIUCHI, Kinji ASAKA

    The 22nd SICE System Integration Division Annual Conference  2021.12.17 

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    Event date: 2021.12.15 - 2021.12.17

    Language:Japanese   Presentation type:Poster presentation  

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  • Prototype of a pneumatic soft actuator using laser welding method of polyimide(PI)film

    Ryo MORIGAKI, Daisuke YAMAGUCHI, Shuichi WAKIMOTO, Takefumi KANDA

    The 22nd SICE System Integration Division Annual Conference  2021.12.16 

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    Event date: 2021.12.15 - 2021.12.17

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  • Basic Study on Bending / Twisting Control of a Pneumatic Soft Manipulator with Flexible Strain Sensors

    Yoshie YAMAMOTO, Shuichi WAKIMOTO, Takefumi KANDA, Daisuke YAMAGUCHI, Takahiro UKIDA

    The 22nd SICE System Integration Division Annual Conference  2021.12.16 

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    Event date: 2021.12.15 - 2021.12.17

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  • Development of soft actuator made of polyimide film using printed electronics technology

    Akari NAGASAKI, Daisuke YAMAGUCHI, Shuichi WAKIMOTO, Takefumi KANDA

    The 20th Machine Design and Tribology Division Meeting in JSME  2021.12.7 

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    Event date: 2021.12.6 - 2021.12.7

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • Examination of an optical fiber sensor combination for a flat-string type integrated artificial muscle

    LEE UK, Weihang TIAN, Shuichi WAKIMOTO, Takefumi KANDA, Daisuke YAMAGUCHI

    The 20th Machine Design and Tribology Division Meeting in JSME  2021.12.7 

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    Event date: 2021.12.6 - 2021.12.7

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  • Displacement Sensing of an Active String Actuator by an Optical Fiber

    Tian Weihang, Shuichi Wakimoto, Kazuya Nagaoka, Yorifumi Yoshimoto, Takefumi Kanda, Daisuke Yamaguchi

    8th International Electronic Conference on Sensors and Applications  2021.11.1 

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    Event date: 2021.11.1 - 2021.11.11

    Language:English  

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  • A soft robot arm with flexible sensors for master-slave operation

    Yoshie Yamamoto, Shuichi Wakimoto, Takefumi Kanda, Daisuke Yamaguchi

    8th International Electronic Conference on Sensors and Applications  2021.11.1 

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    Event date: 2021.11.1 - 2021.11.11

    Language:English  

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  • Study for evaluation of preload mechanism in ultrasonic transducer for cryogenic environment

    Kairi Yagi, Takumi Nishida, Takefumi Kanda, Daisuke Yamaguchi, Shuichi Wakimoto

    The Japan Society for Precision Engineering Annual Autumn Meeting  2021.9.23 

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    Event date: 2021.9.21 - 2021.9.27

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • A Transducer for Micro Cryogenic Actuator Using Novel Preload Mechanism Without Bolt-Clamping

    Takefumi Kanda, Kairi Yagi, Takumi Nishida, Daisuke Yamaguchi, Shuichi Wakimoto

    IEEE International Ultrasonic Symposium(IUS2021)  2021.9.16 

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    Event date: 2021.9.11 - 2021.9.16

    Language:English   Presentation type:Poster presentation  

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  • Experimental Investigation of a Bending Mechanism using Smart Artificial Muscles with an Optical Fiber

    Yorifumi YOSHIMOTO, Weihang TIAN, Kazuya NAGAOKA, Shuichi WAKIMOTO, Takefumi KANDA, Daisuke YAMAGUCHI

    Mechanical Engineering Congress 2021  2021.9.8 

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    Event date: 2021.9.5 - 2021.9.8

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • Development of a Device to Prevent Back Pain using Integrated Artificial Muscles which are Knitted into Flat String

    Yuiki YAMASAKI, Shuichi WAKIMOTO, Takefumi KANDA, Daisuke YAMAGUCHI

    Mechanical Engineering Congress 2021  2021.9.7 

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    Event date: 2021.9.5 - 2021.9.8

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  • Fabrication of “Active String” using Thin Artificial Muscles by String Production Process

    Weihang TIAN, Shuichi WAKIMOTO, Takefumi KANDA, Daisuke YAMAGUCHI

    Mechanical Engineering Congress 2021  2021.9.7 

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    Event date: 2021.9.5 - 2021.9.8

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • Filmotics:mechatronics changing with film welding Invited

    Daisuke Yamaguchi

    International Symposium on Upcoming Prominent ENgineering solutions(ISUPEN2021)  2021.8.31 

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    Event date: 2021.8.31

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  • 3Dプリンタ性樹脂型を用いたポリイミドフィルム成型技術の開発 Invited

    山口大介

    第34回岡山マイクロリアクターネット例会  2021.7.2 

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    Event date: 2021.7.2

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

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  • Hysteresis Characteristics of Film-Layered Variable Stiffness Mechanism Using Jamming Transition

    Daisuke YAMAGUCHI, Hiroki NODA, Yuji ISHINO, Masaya TAKASAKI, Takeshi MIZUNO

    The Robotics and Mechatronics Conference 2021 in Osaka  2021.6.8 

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    Event date: 2021.6.6 - 2021.6.8

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  • Fabrication of an Integrated Structure of Shape Memory Alloy Wires by Stringing Process

    Yutaro TANAKA, Shuichi WAKIMOTO, Takefumi KANDA, Daisuke YAMAGUCHI, Masato SAKUMA

    The Robotics and Mechatronics Conference 2021 in Osaka  2021.6.8 

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    Event date: 2021.6.6 - 2021.6.8

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  • Improvement of sensor characteristics of an optical fiber for bending type smart artificial muscle

    Kazuya NAGAOKA, Shuichi WAKIMOTO, Takefumi KANDA, Daisuke YAMAGUCHI, Hiroaki MATSUDA

    The Robotics and Mechatronics Conference 2021 in Osaka  2021.6.7 

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    Event date: 2021.6.6 - 2021.6.8

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  • Prototype of a 3 unit serial type soft robotic arm configured with thin artificial muscles

    Tomoya Kawaguchi, Yoshie Yamamoto, Shuichi Wakimoto, Takefumi Kanda, Daisuke Yamaguchi

    2021.5.28 

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    Event date: 2021.5.28

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  • Utilizing a robot teaching kit to develop a new experiment menu foe students

    Tetsushi Kamekawa,Takayuki Matsuno,Shuichi Wakimoto,Yuichiro Toda,Kunihisa Okano,Daisuke Yamaguchi

    The 65th Annual Conference of the Institute of Systems, Control and Information Engineers (SCI’21)  2021.5.27 

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    Event date: 2021.5.26 - 2021.5.28

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  • Heat compressed air molding of polyimide film using resin mold manufactured by 3D

    Daiki Miyakae, Daisuke Yamaguchi, Shuichi Wakimoto, Takefumi Kanda

    The Japan Society for Precision Engineering Annual Spring Meeting  2021.3.16 

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    Event date: 2021.3.16 - 2021.3.22

    Language:Japanese  

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  • 極低温環境用超音波振動子での熱応力を利用した予圧印加の検討

    八木海吏, 西田匠, 神田岳文, 山口大介, 脇元修一

    2021年度精密工学会春季大会学術講演会  2021.3.16 

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    Event date: 2021.3.16 - 2021.3.22

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  • 極限環境用空圧アクチュエータ材料としてのポリイミドフィルムの特性評価

    木村圭吾, 山口大介, 脇元修一, 神田岳文

    2021年度精密工学会春季大会学術講演会  2021.3.16 

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    Event date: 2021.3.16 - 2021.3.22

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  • 2種類のポリイミドフィルムの貼り合わせのみで製作可能な湾曲アクチュエータの試作

    遠藤一穂, 山口大介, 石野裕二, 高崎正也, 水野毅

    2021年度精密工学会春季大会学術講演会  2021.3.16 

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    Event date: 2021.3.16 - 2021.3.22

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  • ボルトの締結力を利用した溶着装置によるテクスチャリングと湾曲アクチュエータの製作

    高原悠希, 山口大介, 脇元修一, 神田岳文

    2021年度精密工学会春季大会学術講演会  2021.3.16 

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    Event date: 2021.3.16 - 2021.3.22

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  • Evaluation of variable stiffness elements with different number of laminated polyimide films

    Hiroki NODA, Daisuke YAMAGUCHI, Takeshi MIZUNO, Masaya TAKASAKI, Yuji ISHINO

    The 21st SICE System Integration Division Annual Conference  2020.12.17 

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    Event date: 2020.12.16 - 2020.12.18

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  • 複雑形状を有するポリイミド製空気室の簡易製作法と気室のモータへの適用

    山口大介, 森敬志, 石野裕二, 高崎正也, 水野毅

    2020年度精密工学会秋季大会  2020.9.1 

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    Event date: 2020.9.1 - 2020.9.7

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  • Study on a Preload Mechanism of a Piezoelectric for Cryogenic Environment

    Takefumi Kanda, Kairi Yagi, Takumi Nishida, Daisuke Yamaguchi, Shuichi Wakimoto

    The Japan Society for Precision Engineering Annual Autumn Meeting  2020.9.1 

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    Event date: 2020.9.1 - 2020.9.7

    Language:Japanese  

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  • Development of System for Study on Human Recognition Influenced by Changing Button-push Sensation

    Takahiro FUNABASHI, Masaya TAKASAKi, Daisuke YAMAGUCHI, Yuji ISHINO, Takeshi MIZUNO

    Dynamics and Design Conference 2020(D&D2020)  2020.9.4 

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    Event date: 2020.9.1 - 2020.9.4

    Language:Japanese  

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  • Proposal of Dual-Mass Dynamic Vibration Absorber Using Negative Stiffness

    Kenji TOMITA, Takeshi MIZUNO, Yuji ISHINO, Masaya TAKASAKi, Daisuke YAMAGUCHI

    Dynamics and Design Conference 2020(D&D2020)  2020.9.3 

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    Event date: 2020.9.1 - 2020.9.4

    Language:Japanese  

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  • Miniaturization of Magnetic Suspension System with Laterally Contorol Flux-path Mechanism (2nd report: Realization of Suspension)

    Takeshi MIZUNO, Shigenori KUROSAWA, Yuji ISHINO, Daisuke YAMAGUCHI, Masaya TAKASAKI

    Dynamics and Design Conference 2020(D&D2020)  2020.9.2 

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    Event date: 2020.9.1 - 2020.9.4

    Language:Japanese  

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  • Development of Three-degree-of-freedom Zero-compliance Mechanism for Micro Force Measurement with a Cantilever

    Takeshi MIZUNO, Yoichiro HAYASHI, Masaya TAKASAKI, Yuji ISHINO, Daisuke YAMAGUCHI

    Preprints of the 21st World Congress of The International Federation of Automatic Control (IFAC World Congress 2020)  2020.7 

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    Event date: 2020.7.11 - 2020.7.17

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  • ポリイミドフィルムの成型加工による極限環境用ソフトアクチュエータの製作

    山口大介, 田浦魁晟, 石野裕二, 高崎正也, 水野毅

    ロボティクス・メカトロニクス講演会2020  2020.5.28 

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    Event date: 2020.5.27 - 2020.5.29

    Language:Japanese  

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  • 直列二重磁気浮上を利用した隔壁センサレス磁気浮上

    水野毅, 水垂宏介, 石野裕二, 高崎正也, 山口大介

    第32回「電磁力関連のダイナミクス」シンポジウム(SEAD32)  2020.5.21 

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    Event date: 2020.5.20 - 2020.5.22

    Language:Japanese  

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  • ポリイミドフィルムとアルミニウム薄膜電極から構成されるアクチュエータへの供給電力に着目した湾曲量の評価

    小澤一彰, 山口大介, 坂井建宣, 石野裕二, 髙﨑正也, 水野 毅

    2020年度精密工学会春季大会学術講演会 

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    Event date: 2020.3.17 - 2020.3.19

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  • 超音波振動子と対向子を用いたポンプの液体への適用

    山本翔也, 胡 永亮, 髙﨑正也, 山口大介, 石野裕二, 水野 毅

    2020年度精密工学会春季大会学術講演会 

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    Event date: 2020.3.17 - 2020.3.19

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  • ジャミング転移を用いたポリイミドフィルム製可変剛性要素の特性評価

    野田拓希, 山口大介, 石野裕二, 髙﨑正也, 水野 毅

    2020年度精密工学会春季大会学術講演会 

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    Event date: 2020.3.17 - 2020.3.19

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  • ランジュバン型振動子による皮膚感覚提示のための振幅変調の検討

    吉原悠人, 髙﨑正也, 山口大介, 石野裕二, 水野 毅

    2020年度精密工学会春季大会学術講演会 

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    Event date: 2020.3.17 - 2020.3.19

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  • 超音波支持の周波数依存性に関する研究—第2 報:圧力分布測定—

    窪田雅大, 髙﨑正也, 山口大介, 石野裕二, 水野 毅

    2020年度精密工学会春季大会学術講演会 

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    Event date: 2020.3.17 - 2020.3.19

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  • 2枚の成型したポリイミドフィルムから構成される空圧アクチュエータの試作

    田浦魁晟, 山口大介, 石野裕二, 髙﨑正也, 水野 毅

    2020年度精密工学会春季大会学術講演会 

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    Event date: 2020.3.17 - 2020.3.19

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  • 金型を必要としないポリイミドフィルム同士の溶着とバルーンの試作

    加藤陽祐, 山口大介, 石野裕二, 髙﨑正也, 水野 毅

    2020年度精密工学会春季大会学術講演会 

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    Event date: 2020.3.17

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  • 超小型探査機 OMOTENASHI 用ポリイミド製エアバッグ気室の開発

    石野 裕二, 山口 大介, 大槻 真嗣, 高橋 洋介, 佐藤 亮, 髙﨑 正也, 水野 毅

    第16回「運動と振動の制御」シンポジウム (MoViC2019) 

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    Event date: 2019.12.4 - 2019.12.6

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  • 真空圧を利用したポリイミドフィルム製可変剛性要素の試作

    野田 拓希, 山口 大介, 石野 裕二, 高崎 正也, 水野 毅

    第16回「運動と振動の制御」シンポジウム (MoViC2019) 

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    Event date: 2019.12.4 - 2019.12.6

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  • 隔壁磁気浮上システムの開発 第1報 直列二重磁気浮上の適用

    水垂 宏介, 水野 毅, 石野 裕二, 髙崎 正也, 山口 大介

    第16回「運動と振動の制御」シンポジウム (MoViC2019) 

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    Event date: 2019.12.4 - 2019.12.6

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  • 側配置型磁路制御式磁気浮上機構の小型化に関する研究 (第 1 報: 回転式磁路制御機構の提案)

    黒澤 繁範, 水野 毅, 石野 裕二, 山口 大介, 高崎 正也

    第16回「運動と振動の制御」シンポジウム (MoViC2019) 

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    Event date: 2019.12.4 - 2019.12.6

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  • Realization of zero-power control in a two-degree-of-freedom double parallel magnetic suspension system

    Y. Narisawa, T. Mizuno, M. Takasaki, Y. Ishino, M. Hara, D. Yamaguchi

    2017 Asian Control Conference, ASCC 2017  2018.2.7  Institute of Electrical and Electronics Engineers Inc.

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    Event date: 2018.2.7

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    A basic single-degree-of-freedom magnetic suspension system consists of one floator, one electromagnet and one amplifier. For multi-degree-of-freedom control, multiple electromagnets and multiple amplifiers are necessary, which increases the cost of total system. As a means of overcoming this problem, parallel magnetic suspension has been proposed which controls multiple floators or multi-degree-of-freedom motions with a single power amplifier. This paper focuses on the zero-power control in a two-degree-of-freedom double parallel magnetic suspension system. The steady-state characteristics of this system are clarified by theoretical analysis. When the disturbance acts on one of the suspended points, a steady displacement appears only in the corresponding suspended point. The direction of the steady displacement is opposite to the direction of the disturbance. In addition, the direction of the transient response depends on the point that the disturbance acts on. In experimental apparatus, step response and frequency response are measured to verify the predictions.

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  • Resonance frequency tracking control of ultrasonic transducer for diminished haptics

    Masaya Takasaki, Daisuke Yamaguchi, Masayuki Hara, Yuji Ishino, Takeshi Mizuno

    2017 Asian Control Conference, ASCC 2017  2018.2.7  Institute of Electrical and Electronics Engineers Inc.

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    Event date: 2018.2.7

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    Previously, 'diminished haptics' in which real surface texture can be transformed was proposed. Strong intensity ultrasonic vibration was applied to realize demonstration of the concept. To enjoy the demonstration, the intensity of the ultrasonic vibration on solid surface should be maintained. The ultrasonic transducer fabricated for this purpose consisted of a Langevin type ultrasonic transducer and a horn whose end was shaped in square. Large vibration amplitude can be acquired at resonance of the whole transducer as longitudinal vibration mode. On the other hand, resonant frequency easily changes due to operating conditions. To keep the amplitude, the resonant frequency should be tracked by real time. Tracking control with phase detection was applied with a newly developed control system. Step responses of oscillating frequency as results of tracking control are reported. The results show successful tracking control.

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  • Zero-power control of flux-path control magnetic suspension system with flux-interrupting plates

    T. Mizuno, M. Takasaki, M. Hara, D. Yamaguchi, Y. Ishino

    LDIA 2017 - 11th International Symposium on Linear Drives for Industry Applications  2017.11.3  Institute of Electrical and Electronics Engineers Inc.

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    Event date: 2017.11.3

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    The feasibility of zero-power control in flux-path control magnetic suspension is discussed. In the flux-path control magnetic suspension system, ferromagnetic control plates are inserted between a permanent magnet (magnetic source) and a floator and moved to vary the flux from the magnetic source to the floator. The zero-power control has been applied in active magnetic suspension with a DC electromagnet. In the zero-power controlled system, the control current was kept virtually zero in the steady states. The applicability of the zero-power control to the flux-path control magnetic suspension is discussed in this paper. The conditions required to achieve the zero-power control is presented in an analytical form. Experiments are carried in a fabricated apparatus to certify the theoretical predictions.

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  • Precise positioning characteristics of multi-mode ultrasonic motor

    Masaya Tkasaki, Zhang Shuo, Masayuki Hara, Daisuke Yamaguchi, Yuji Ishino, Takeshi Mizuno

    2015 IEEE International Ultrasonics Symposium, IUS 2015  2015.11.13  Institute of Electrical and Electronics Engineers Inc.

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    Event date: 2015.11.13

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    Previously developed multi-mode ultrasonic motor has three driving modes, which are fast driving mode with figure-of-eight locus resonant vibration, impact driving with saw tooth wave form and DC voltage driving mode. The impact driving mode can be divided into two categories. One utilized resonant vibration (fast) and the other uses individual off resonance vibration (slow). For precise positioning, characteristics of stable driving of the slow impact driving mode and stroke of the DC mode are important. This paper reports the characteristics obtained through experiments.

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  • Comparison of zero-power controllers in double parallel magnetic suspension system with parallel connected coils

    Yoshinori Narisawa, Daisuke Yamaguchi, Masayuki Hara, Masaya Takasaki, Takeshi Mizuno, Yuji Ishino

    2015 10th Asian Control Conference: Emerging Control Techniques for a Sustainable World, ASCC 2015  2015.9.8  Institute of Electrical and Electronics Engineers Inc.

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    Event date: 2015.9.8

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    A basic single-degree-of-freedom magnetic suspension system consists of one floator, one electromagnet and one amplifier. For multi-degrees-of-freedom control, multiple electromagnets and multiple amplifiers are necessary, which increases the cost of total system. As a means of overcoming this problem, parallel magnetic suspension has been proposed where multiple floators are controlled with a single power amplifier. Parallel magnetic suspension systems are classified into two types according to the output of the power amplifier: current-controlled and voltage-controlled. Voltage-controlled parallel magnetic suspension systems are classified into two types: series connected and parallel connected. The feasibilities of these systems have been already demonstrated in the previous work. This paper focuses on the voltage-controlled parallel magnetic suspension system with parallel-connected coils. Three approaches to zero-power control are applicable in such a system. This paper compares these approaches in a viewpoint of pole assignment. In addition, a relationship in the feedback gains between the three approaches are presented numerically.

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  • Development of non-contact carrier system using solar magnetic suspension (3ed report: Continuous 5-day and installation of sloping propulsion mechanism)

    Yuji Ishino, Masaya Takasaki, Daisuke Yamaguchi, Takeshi Mizuno, Masayuki Hara

    2015 10th Asian Control Conference: Emerging Control Techniques for a Sustainable World, ASCC 2015  2015.9.8  Institute of Electrical and Electronics Engineers Inc.

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    Event date: 2015.9.8

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    A solar-powered magnetic suspension carrier system is developed in which the carrier is powered without contact. There are two conventional methods of powering the coils of the magnetic suspension carrier: (i) through wire, (ii) onboard battery (wireless) power supply. The contactless is lost in the former while stations for charging the battery are necessary in the latter. These problems are overcome by the proposed carrier system using solar magnetic suspension that can attain continuous levitation. The magnetic suspension carrier is assumed to operate inside rooms like inside a factory building. Because the generation power by solar cells is small, power saving us acritical requirement. Therefore, the zero power control is applied for suspension. In addition, low-power peripheral devices are fabricated. The developed carrier system achieved a five-day levitation without external power supply in a bright environment. In addition, a sloping propulsion mechanism was introduced. The mechanism consists of a track rail and two pillars with actuators to move up and down the track rail. The carrier slides and moves to the lower direction due to gravity below a sloped rail.

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  • Ultrasonic motor for sample spinning of solid-state nuclear magnetic resonance spectrometer in high magnetic field

    Daisuke Yamaguchi, Dai Takeda, Takefumi Kanda, Koichi Suzumori

    IEEE International Ultrasonics Symposium, IUS  2014.10.20  IEEE Computer Society

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    Event date: 2014.10.20

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    The aim of this paper is to realize a new sample spinning unit for a solid-state nuclear magnetic resonance (NMR). In the solid-state NMR analysis, a sample spinning in high magnetic field is an important function. We have designed and fabricated the sample spinning unit using a low-profile ultrasonic motor for high magnetic field. The unit could be driven in high magnetic flux at 9.4 T. Soli-state NMR analysis of glycine was measured using the unit. We have succeeded in applying the ultrasonic motor for solid-state NMR analysis.

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  • Evaluation of thermal stress of transducers for cryogenic ultrasonic motors

    Yuya Noguchi, Daisuke Yamaguchi, Takefumi Kanda, Koichi Suzumori

    IEEE International Ultrasonics Symposium, IUS  2014.10.20  IEEE Computer Society

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    Event date: 2014.10.20

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    An ultrasonic motor which can be driven at the condition from room temperature to cryogenic temperature has been designed, fabricated and evaluated. This motor has a bolt-clamped Langevin-type transducer which is suitable for cryogenic temperature. The aim of this paper is to evaluate the thermal stress of transducers. Each transducer is made of materials which had different thermal expansion coefficient, such as stainless, Ti, or invar. The thermal stress in the transducer made of Ti was the smallest. The rotation speed of the motor using the transducer made of Ti was evaluated at cryogenic temperature. The rotation speed was 1102 rpm at 4.6 K when the applied voltage was 100 V&lt
    inf&gt
    p-p&lt
    /inf&gt
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  • Evaluation of piezoelctric materials for cryogenic ultrasonic motor

    Daisuke Yamaguchi, Takefumi Kanda, Koichi Suzumori

    IEEE International Ultrasonics Symposium, IUS  2013 

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    Event date: 2013

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    This paper presents a fabrication and evaluation of an ultrasonic motor which can drive in an ultralow temperature environment. A piezoelectric performance of ferroelectric materials was evaluated at ultralow temperature. To measure the piezoelectric constant d31 of PMN-PT and PZT at ultralow temperature, the resonance-antiresonance method was applied. The d31 of the PMN-PT was higher than that of PZT at 4.5 K. Additionally, we have fabricated and evaluated an ultrasonic motor that have a bolt-clamped Langevin-type transducer. The performance of the transducer and the efficiency of the motor had similar decreasing tendency with driving temperature. © 2013 IEEE.

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  • Thermal Characteristics of a PMN-PT Single Crystal and an Ultrasonic Motor in Ultralow Temperature Environment

    Yamaguchi Daisuke, Kanda Takefumi, Suzumori Koichi, Noguchi Yuya

    Proceedings of Symposium on Ultrasonic Electronics  2012.11.13  Steering committee of symposium on ultrasonic electronics

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    Event date: 2012.11.13

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  • 極低温環境での使用を目的とした超音波モータへのPMN‐PT単結晶の応用

    山口大介, 神田岳文, 鈴森康一, 黒田雅貴, 武田大

    電磁力関連のダイナミックスシンポジウム講演論文集  2012.5.16 

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    Event date: 2012.5.16

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  • 磁気浮上系のリセット要素による安定化 第3報 積分補償器との併用

    石野 裕二, 水野 毅, 高崎 正也, 山口 大介

    第62回自動制御連合講演会  2019.11.10 

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  • 磁路制御式磁気浮上の大ギャップ化に関する研究(第5報:浮上体の多自由度マニピュレーション)

    水野 毅, 石橋 尚宜, 石野 裕二, 高崎 正也, 山口 大介

    第62回自動制御連合講演会  2019.11.10 

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  • クライオポンプの冷凍機用除振ユニットの開発 第3報 観測部の振動特性と除振の試み

    高橋 洋介, 水野 毅, 石野 裕二, 高崎 正也, 山口 大介

    第62回自動制御連合講演会  2019.11.10 

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  • 磁路制御式磁気浮上の大ギャップ化に関する研究(第5報:浮上体の多自由度マニピュレーション)

    水野 毅, 石橋 尚宜, 石野 裕二, 高崎 正也, 山口 大介

    第62回自動制御連合講演会  2019.11.10 

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  • Improving measuring accuracy in relay feedback mass measurement system by a modified period measurement

    Egawa Taku, Mizuno Takeshi, Takasaki Masaya, Ishino Yuji, Yamaguchi Daisuke

    The Asia Pacific Measurement Forum on Mechanical Quantities, 2019 (APMF2019)  2019.11 

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  • 交流磁気浮上を用いた遠心血液ポンプの提案

    水野 毅, アイシャ ビンティ, アブドゥッラ ザイク, 桑名 克之, 高崎 正也, 山口 大介, 石野 裕二

    第28回MAGDAコンファレンス  2019.10.30 

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  • Study on Frequency Dependence of Ultrasonic Suspension

    Masahiro Kubota, Masaya Takasaki, Daisuke Yamaguchi, Yuji Ishino, Takeshi Mizuno

    The International Workshop on Piezoelectric Materials and Applications in Actuators (IWPMA2019)  2019.10 

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  • Higher resonant frequency of bulk wave ultrasonic transducer for tactile display

    Hiroshi Kimura, Masaya Takasaki, Yuji Ishino, Daisuke Yamaguchi, Takeshi Mizuno

    The International Workshop on Piezoelectric Materials and Applications in Actuators (IWPMA2019)  2019.10 

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  • Non-uniqueness of Steady-state Trajectory of Mass Measurement System with Restoring Force Compensation in addition to Relay Feedback of Velocity

    Takeshi MIZUNO, Keisuke NISIZAWA, Yuji ISHINO, Masaya TAKASAKI, Daisuke YAMAGUCHI

    The 2019 19th International Conference on Control, Automation and Systems (ICCAS 2019)  2019.10 

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  • 超音波支持の周波数依存性に関する研究 -第一報 振動子の製作と基礎実験-

    窪田 雅大, 髙﨑 正也, 山口 大介, 石野 裕二, 水野 毅

    2019精密工学会秋季大会学術講演会  2019.9.5 

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  • 複雑形状を有するポリイミド製空気室の製作と回転型モータの試作

    山口 大介, 永見 僚, 石野 裕二, 髙﨑 正也, 水野 毅

    2019精密工学会秋季大会学術講演会  2019.9.5 

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  • バルク振動を用いた皮膚感覚ディスプレイ用超音波振動子の高周波数化

    木村碩志, 髙﨑正也, 山口大介, 石野裕二, 水野 毅

    2019精密工学会秋季大会学術講演会  2019.9.5 

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  • Performance study on newly developed AC magnetic suspension system using magnetic resonance coupling

    Arifur Rahman, Takeshi Mizun, Masaya Takasaki, Yuji Ishino, Daisuke Yamaguchi

    The the 19th International Symposium on Applied Electromagnetics and Mechanics(ISEM2019)  2019.9 

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  • Suppression of Vibration Induced by Reciprocal Motion of Displacer in Cryopump with an Active Dynamic Vibration Absorber

    Takeshi MIZUNO, Takahito IIDA, Yuji ISHINO, Masaya TAKASAKI, Daisuke YAMAGUCHI

    IFAC MECHATRONICS & NOLCOS 2019  2019.9 

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  • Convergence of Intermediate Control in Mass Measurement System with Relay Feedback of Velocity and Linear Feedback of Displacement

    Takeshi Mizuno, Keisuke Nishizawa, Masaya Takasaki, Yuji Ishino, Daisuke Yamaguchi

    The SICE Annual Conference (SICE2019), Hiroshima  2019.9 

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  • 3自由度ゼロコンプライアンス機構を用いたカンチレバー式力測定装置の開発

    水野 毅, 髙橋 弘享, 髙﨑 正也, 山口 大介, 石野 裕二

    Dynamics and Design Conference 2019  2019.8.30 

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  • 微小磁性部品組み立てにおけるバイラテラル操作システムの開発

    文字山 竜, 水野 毅, 石野 裕二, 髙﨑 正也, 山口 大介

    Dynamics and Design Conference 2019  2019.8.29 

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  • 磁気浮上系のリセット要素による安定化 第 2 報 制振特性の向上

    石野 裕二, 水野 毅, 髙﨑 正也, 山口 大介

    Dynamics and Design Conference 2019  2019.8.28 

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  • Three-Dimensional Control of an Iron Ball by Flux-path Control Mechanisms Located around Magnetic Source

    Takeshi Mizuno, Naoki Ishibashi, Yuji Ishino, Daisuke Yamaguchi, Masaya Takasaki

    The 12th international symposium on linear drives for industry applications (LDIA2019)  2019.7 

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  • Force Compensation Based on Observer for Assembly of Magnetized Components

    Ryu Monjiyama, Takeshi Mizuno, Yuji Ishino, Masaya Takasaki, Daisuke Yamaguchi

    The 2019 12th Asian Control Conference (ASCC2019)  2019.6 

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  • Stabilization of Magnetic Suspension System by using First-Order Reset Element without Derivative Feedback

    Yuji ISHINO, Takeshi MIZUNO, Masaya TAKASAKI, Daisuke YAMAGUCHI

    The 2019 12th Asian Control Conference (ASCC2019)  2019.6 

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  • Intermediate Control for Stable Trajectory in a Relay-Feedback Mass Measurement System

    Takeshi MIZUNO, Keisuke NISHIZAWA, Yuji ISHINO, Masaya TAKASAKI, Daisuke YAMAGUCHI

    The 2019 12th Asian Control Conference (ASCC2019)  2019.6 

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  • Realization of Vibration Absorption at Multiple Frequencies on Vacuum Chamber with Cryopump

    Takeshi MIZUNO, Takahito IIDA, Yuji ISHINO, Masaya TAKASAKI, Daisuke YAMAGUCHI, Masayuki HARA

    The 2019 12th Asian Control Conference (ASCC2019)  2019.6 

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  • Proposal of Mass Estimation Regardless of Switching Position in a Relay Feedback Mass Measurement System

    Taku EGAWA, Takeshi MIZUNO, Masaya TAKASAKI, Yuji ISHINO, Daisuke YAMAGUCHI

    The 2019 12th Asian Control Conference (ASCC2019)  2019.6 

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  • 交流磁気浮上モータの開発(第1報)基本構想と原理検証

    河田 大貴, 水野 毅, 髙﨑 正也, 石野 裕二, 山口 大介

    第31 回「電磁力関連のダイナミクス」シンポジウム(SEAD31)  2019.5.24 

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  • Study on AC magnetic suspension system using magnetic resonant coupling (1st report: Design and Fabrication of Apparatus for Examining Basic Characteristics)

    Arifur Rahman, Takeshi Mizuno, Masaya Takasaki, Yuji Ishino, Daisuke Yamaguchi

    The SEAD31  2019.5.22 

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  • 高周波数における人の振動知覚閾値の周波数特性

    髙橋功至, 佐藤史樹, 髙﨑正也, 山口大介, 原正之, 石野裕二, 水野毅

    知覚情報研究会  2019.3.19 

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  • 折り返し構造を有するアルミニウム薄膜電極の通電加熱によるポリイミドフィルムの湾曲

    小澤一彰, 山口大介, 石野裕二, 髙﨑正也, 水野毅

    ,精密工学会,2019年度春季大会  2019.3.13 

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  • OMOTENASHI探査機の衝撃緩和装置を利用した展開型アンテナの開発

    大槻真嗣, 菊池隼仁, 冨木淳史, 鳥居航, 山口大介, 石野裕二, 吉光 徹雄, 橋本樹明

    第20回宇宙科学シンポジウム  2019.1.8 

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  • 高周波振動提示時の指表面の振動追従観察

    髙橋功至, 佐藤史樹, 石野裕二, 山口大介, 髙﨑正也, 水野毅

    第19回 計測自動制御学会 システムインテグレーション部門講演会  2018.12.13 

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  • 磁界共振結合を利用した完全無制御AC磁気浮上展示装置の製作

    石野裕二, 水野毅, 髙﨑正也, 山口大介

    第61回自動制御連合講演会  2018.11.17 

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  • 遮束型磁路制御式磁気浮上機構の改良とゼロパワー制御の実現

    文字山竜, 水野毅, 髙﨑正也, 石野裕二, 山口大介

    第61回自動制御連合講演会  2018.11.17 

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  • Vibration Amplitude Modulation for Roughness Sensation Rendering with Ultrasoinc Vibration

    Masaya Takasaki, Itaru Shimizu, Masayuki Hara, Daisuke Yamaguchi, Yuji Ishino, Takeshi Mizuno

    IEEE International Ultrasonics Symposium 2018  2018.10.25 

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  • A cryogenic rotary valve using bolt-clamped type transducer

    Takefumi Kanda, Taiki Yamada, Shuichi Wakimoto, Daisuke Yamaguchi

    IEEE International Ultrasonics Symposium 2018  2018.10.25 

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  • Realization of Magnetic Suspension by Flux-Path Control Mechanisms Lying Lateral to Magnetic Source

    Takeshi Mizuno, Naoki Ishibashi, Yuji Ishino, Daisuke Yamaguchi, Masaya Takasaki

    2018 18th International Conference on Control, Automation and Systems (ICCAS 2018)  2018.10.18 

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  • Ultrasonic plate transducer for tactile display using multiple vibration modes

    Hiroshi Kimura, Masaya Takasaki, Yuji Ishino, Daisuke Yamaguchi, Masayuki Hara, Takeshi Mizuno

    The International Workshop on Piezoelectric Materials and Applications in Actuators (IWPMA2018)  2018.9.14 

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  • Development of tactile display to investigate the perception threshold for high frequency vibration

    Koji Takahashi, Fumiki Sato, Yuji Ishino, Daisuke Yamaguchi, Masaya Takasaki, Takeshi Mizuno

    The International Workshop on Piezoelectric Materials and Applications in Actuators (IWPMA2018)  2018.9.14 

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  • Trajectory Control in Mass Measurement System Using Relay Feedback of Velocity and Restoring Force Compensation

    Takeshi Mizuno, Keisuke Nishizawa, Masaya Takasaki, Yuji Ishino, Masayuki Hara, Daisuke Yamaguchi

    The SICE Annual Conference 2018  2018.9.13 

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  • 熱間圧空成型と熱溶着を利用したポリイミドフィルム製アクチュエータの製作

    田浦魁晟, 山口大介, 石野裕二, 高崎正也, 水野毅

    2018年度精密工学会秋季大会学術講演会  2018.9.5 

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  • Evaluation of Multi-Dimensional Force Measurement Apparatus using Zero-Compliance Principle in Microforce Measurement

    Md Helal An NAHIYAN, Takeshi MIZUNO, Masaya TAKASAKI, Yuji ISHINO, Masayuki HARA, Daisuke YAMAGUCHI

    The XXII IMEKO World Congress  2018.9 

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  • クライオポンプを対象としたアクティブ動吸振器による特定周波数振動零化制御

    水野 毅, 飯田 隆仁, 石野 裕二, 髙﨑 正也, 原 正之, 山口 大介

    Dynamics and Design Conference 2018(D&D2018)  2018.8.29 

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  • Variable stiffness approach to reduce vibration induced in passively-supported directions of an active magnetic suspension system

    Asief Javeda, Takeshi Mizuno, Masaya Takasaki, Yuji Ishino, Daisuke Yamaguchi

    The 16Th International Symposium on Magnetic Bearings (ISMB16)  2018.8.16 

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  • Compensation for Sensing Delay in Mass Measurement Using a Relay Feedback of Velocity

    Takeshi MIZUNO, Naoki ISHIBASHI, Masaya TAKASAKI, Yuji ISHINO, Daisuke YAMAGUCHI

    The14th International Conference on Motion and Vibration Control(MoViC 2018)  2018.8.7 

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  • Vertical Direction Static Force Measurement Using a Three-Dimensional Force Measurement Apparatus Based on Zero-Compliance Principle

    Md. Helal An NAHIYAN, Takeshi MIZUNO, Masaya TAKASAKI, Yuji ISHINO, Masayuki HARA, Daisuke YAMAGUCHI

    The 14th International Conference on Motion and Vibration Control(MoViC 2018)  2018.8.7 

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  • Measurement of flow resistance in the gap of a pump using ultrasonic transducer and opposing surface

    Tomohiro Hara, Hiroaki Shinada, Masaya Takasaki, Yuji Ishino, Masayuki Hara, Daisuke Yamaguchi, Takeshi Mizuno

    Acoustofluidics2018  2018.8 

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  • Vibration Suppression in the Passively-Supported Direction by Varying Bias Currents in Magnetic Suspension System

    Takeshi MIZUNO, Asief JAVED, Yuji ISHINO, Daisuke YAMAGUCHI, Masaya TAKASAKI

    The 2018 European Control Conference (ECC)  2018.6.13 

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  • 圧電振動子による極低温用バルブの試作とソフトアクチュエータの駆動

    山田大貴, 神田岳文, 脇元修一, 山口大介

    ロボティクス・メカトロニクス講演会2018  2018.6.5 

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  • 超音波スケーラによる切削効率評価に関する研究

    窪田雅大, 髙﨑正也, 山口大介, 原正之, 石野裕二, 水野毅

    第30回「電磁力関連のダイナミクス」シンポジウム(SEAD30)  2018.5.25 

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  • ポリイミド溶着技術を応用した月面着陸用エアバック気室構造の改良

    髙橋洋介, 山口大介, 佐藤亮, 石野裕二, 大槻真嗣, 高崎正也, 水野毅

    2018年度精密工学会春季大会学術講演会  2018.3.15 

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  • うなりを利用した超音波振動子における振幅変調の検討

    清水親, 品田裕壮, 髙﨑正也, 石野裕二, 原正之, 山口大介, 水野毅

    2018年度精密工学会春季大会学術講演会  2018.3.15 

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  • 月面着陸用エアバッグを対象とした大型ポリイミドフィルム溶着装置の製作

    佐藤亮, 山口大介, 髙橋洋介, 石野裕二, 髙崎正也, 水野毅

    2018年度精密工学会春季大会学術講演会  2018.3.15 

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  • 複数の振動モードを用いた皮膚感覚ディスプレイ用振動子の開発

    木村碩志, 品田裕壮, 髙﨑正也, 石野裕二, 原正之, 山口大介, 水野毅

    2018年度精密工学会春季大会学術講演会  2018.3.15 

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  • OMOTENASHI探査機の着陸衝撃抑制装置の検討

    大槻, 真嗣, 山田, 哲哉, 丹野, 英幸, 山口, 大介, 石野, 裕二, 菊池, 隼仁, 吉光, 徹雄, 橋本, 樹明

    第18回宇宙科学シンポジウム  2018.1 

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  • Realization of Zero-Power Control in a Two-Degree-Of-Freedom Double Parallel Magnetic Suspension System

    Yoshinori NARISAWA, Takeshi MIZUNO, Masaya TAKASAKI, Yuji ISHINO, Masayuki HARA, Daisuke YAMAGUCHI

    The 11th Asian Control Conference (ASCC 2017)  2017.12.19 

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  • Resonance Frequency Tracking Control of Ultrasonic Transducer for Diminished Haptics

    Masaya TAKASAKI, Daisuke YAMAGUCHI, Masayuki HARA, Yuji ISHINO, Takeshi MIZUNO

    The 11th Asian Control Conference (ASCC 2017)  2017.12.19 

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  • 自走機能を有したソーラー磁気浮上搬送車の設計

    石野裕二, 水野毅, 高崎正也, 原正之, 山口 大介

    マグネティックス/モータドライブ/リニアドライブ合同研究会  2017.12.7 

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  • ヒトが生きられない極限環境を目指せ!人のように柔らかなアクチュエータ Invited

    山口大介

    2017年度精密工学会北陸信越支部学術講演会  2017.11.25 

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  • クライオポンプの冷凍機用除振ユニットの開発 (第2報:振動制御システムの設計)

    飯田隆仁, 水野毅, 石野裕二, 髙﨑正也, 原正之, 山口大介

    第60回自動制御連合講演会  2017.11.12 

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  • 磁路制御式磁気浮上の大ギャップ化に関する研究 (第3報:磁路制御機構の検討)

    石橋尚宜, 水野毅, 石野裕二, 髙﨑正也, 原正之, 山口大介

    第60回自動制御連合講演会論文集  2017.11.12 

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  • Diminished Haptics用超音波振動子の開発

    高崎正也, 山口大介, 原正之, 石野裕二, 水野 毅

    電気学会研究会  2017.10.13 

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  • 月面着陸用エアバッグへの適用を目指したポリイミド製空気室の加圧試験

    山口大介, 髙橋洋介, 佐藤亮, 石野裕二, 大槻真嗣, 吉光徹雄, 吉川健人, 原正之, 高崎正也, 水野毅

    2017年度精密工学会秋季大会  2017.9.21 

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  • 歯科用超音波スケーラの振動特性の計測

    原智大, 高崎正也, 山口大介, 原,正之, 石野裕二, 水野毅

    2017年度精密工学会秋季大会  2017.9.20 

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  • Zero-Power Control of Flux-path Control Magnetic Suspension System with Flux-interrupting Plates

    Takeshi MIZUNO, Masaya TAKASAKI, Masayuki HARA, Daisuke YAMAGUCHI, Yuji ISHINO

    The 11th International Symposium on Linear Drives for Industry Applications  2017.9.6 

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  • 超音波振動印加による液体の粘性制御の検討

    高橋功至, 石野裕二, 山口大介, 原正之, 高崎正也, 水野毅

    日本機械学会2017年度年次大会  2017.9.6 

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  • 二自由度制御形並列多重磁気浮上系におけるゼロパワー制御の実現

    成澤慶宜, 水野毅, 髙﨑正也, 石野裕二, 原正之, 山口大介

    日本機械学会2017年度年次大会  2017.9.5 

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  • 多重式磁気浮上システムの開発(第16報:二自由度制御型並列多重磁気浮上の基本特性)

    成澤慶宜, 石野裕二, 山口大介, 原正之, 高崎正也, 水野毅

    第15回運動と振動の制御シンポジウム  2017.8.31 

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  • ゼロコンプライアンス機構を用いた加速度計の開発(第1報)測定原理

    河田大貴, 水野毅, 髙﨑正也, 石野裕二, 原正之, 山口大介

    Dynamics and Design Conference 2017  2017.8.29 

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  • Development of Three-Dimensional Force Measurement Instrument Using Zero-Comnpliance Mechanism

    Md Helal An NAHIAN, Takeshi MIZUNO, Masaya TAKASAKI, Yuji ISHINO, Masayuki HARA, Daisuke YAMAGUCHI

    2017.5.19 

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  • 超音波振動を用いた液体の粘性制御の検討

    高橋功至, 石野裕二, 山口大介, 原正之, 高崎正也, 水野毅

    第29回「電磁力関連のダイナミクス」シンポジウム(SEAD29)  2017.5.19 

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  • 多重式磁気浮上システムの開発(第15報:フィードバックの向きと安定性)

    成澤慶宜, 石野裕二, 山口大介, 原正之, 高崎正也, 水野毅

    第29回「電磁力関連のダイナミクス」シンポジウム(SEAD29)  2017.5.18 

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  • 共通磁極を有する 3 自由度磁気浮上機構の開発 -第一報:実験装置の試作-

    石野裕二, 水野毅, 高崎正也, 原正之, 山口大介

    第29回「電磁力関連のダイナミクス」シンポジウム (SEAD29)  2017.5.18 

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  • 液体窒素温度環境用空圧フィルムアクチュエータの成形加工による製作

    山口大介, 花木樹也, 高井和貴, 石野裕二, 原正之, 高崎正也, 水野毅

    ロボティクスメカトロニクス講演会2017  2017.5.12 

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  • 温感ディスプレイを用いたヒトの身体所有感操作に関する研究

    原正之, 高橋弘享, 山口大介, 石野裕二, 高崎正也, 水野毅

    ロボティクスメカトロニクス講演会2017  2017.5.12 

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  • 弾性表面波皮膚感覚ディスプレイによる高周波振動提示の検討

    高崎正也, 佐藤史樹, 原正之, 山口大介, 石野裕二, 水野毅

    ロボティクスメカトロニクス講演会2017  2017.5.11 

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  • 矩形容器の水平加振による液中微小粒子の分別に関する検討

    原正之, 難波江裕之, 山口大介, 石野裕二, 高崎正也, 水野毅

    ロボティクスメカトロニクス講演会2017  2017.5.11 

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  • Observation of Gap of a Pump Using Ultrasonic Transducer and Opposing Surface

    Masaya TAKASAKI, Hiroaki SHINADA, Yuji ISHINO, Daisuke YAMAGUCHI, Masayuki HARA, Takeshi MIZUNO

    The 7th International Conference on Manufacturing, Machine Design and Tribology  2017.4.20 

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  • 高周波に対応した振動知覚閾値測定装置の改良

    髙﨑正也, 佐藤史樹, 山口大介, 原正之, 石野裕二, 水野 毅

    電気学会研究会資料「力触覚提示デバイス」  2017.3.27 

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  • 磁界共振結合を用いた交流磁気浮上に関する研究 第6報:基本特性の実験的評価

    清藤 温, 水野 毅, 髙﨑 正也, 石野 裕二, 原 正之, 山口 大介

    日本機械学会関東支部第23期総会・講演会  2017.3.17 

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  • 高周波に対応した振動知覚閾値測定装置の開発

    佐藤 史樹, 高崎 正也, 石野 裕二, 原 正之, 山口 大介, 水野 毅

    2017年度精密工学会春季大会学術講演会  2017.3.13 

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  • 超音波振動子と対向面を用いたポンプの開発(第5報)-ギャップ内圧力の推定-

    品田裕壮, 高崎正也, 石野裕二, 山口大介, 原正之, 水野毅

    2017年度精密工学会春季大会学術講演会  2017.3.13 

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  • ポリイミドフィルム製空圧アクチュエータへの印加圧力向上を目的としたポリイミドフィルム溶着手法の確立

    高井 和貴, 山口 大介, 上村 崚太郎, 花木 樹也, 石野 裕二, 原 正之, 高崎 正也, 水野 毅

    2017年度精密工学会春季大会学術講演会  2017.3.13 

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  • 二人称視点での自己インタラクションにおけるヒトの身体認識

    清水親, 原正之, 山口大介, 石野裕二, 高崎正也, 水野毅

    第17回計測自動制御学会システムインテグレーション部門講演会  2016.12.17 

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  • 受動支持を併用した磁気軸受における剛性切換制御について

    水野 毅, 石野 裕二, 髙﨑 正也, 原 正之, 山口 大介

    マグネティックス・モータドライブ・リニアドライブ合同研究会  2016.12.2 

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  • High frequency vibration on SAW tactile display

    Masaya Takasaki, Fumiki Sato, Yuji Ishino, Daisuke Yamaguchi, Masayuki Hara, Takeshi Mizuno

    AsiaHaptics2016  2016.11.30 

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  • カンチレバー式ゼロコンプライアンス機構を用いた力測定システムの開発(第2報:測定機構の製作)

    林 陽一郎, 水野 毅, 高崎 正也, 石野裕二, 山口大介, 原 正之

    第25回MAGDAコンファレンス  2016.11.25 

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  • 二自由度支持形並列多重磁気浮上の実現

    成澤慶宜, 水野毅, 高崎正也, 石野裕二, 山口大介, 原正之

    第25回MAGDAコンファレンス  2016.11.25 

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  • 制御系のリミットサイクルを利用した質量測定の高精度化(第2報:速度検出における遅れを考慮した補正式の導出)

    石橋尚宜, 水野毅, 石野裕二, 山口大介, 原正之, 髙﨑正也

    59回自動制御連合講演会  2016.11.17 

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  • クライオポンプの冷凍機用除振ユニットの開発 第1報 実験装置の設計と製作

    飯田隆仁, 水野毅, 石野裕二, 山口大介, 原正之, 髙﨑正也

    第59回自動制御連合講演会  2016.11.15 

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  • 高周波に対応した振動知覚閾値測定装置

    佐藤史樹, 山口大介, 原正之, 高崎正也, 石野裕二, 水野毅

    知覚情報研究会  2016.10.28 

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  • A Cryogenic Ultrasonic Actuator Using a Torsional Transducer

    Takefumi Kanda, Masataka Kuroda, Daisuke Yamaguchi, Koichi Suzumori

    IEEE International Ultrasonics Symposium 2016  2016.10.21 

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  • A Simple Action of Right Index Finger Induces Rubber Hand Illusion to Static Left Hand International conference

    Masayuki Hara, Nproalo Kanayama, Daisuke Yamaguchi, Yuji Ishino, Masaya Takasaki, Takeshi Mizuno

    The 2016 IEEE International Conference on Systems, Man, and Cybernetics (SMC 2016)  2016.10.9 

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  • 集束超音波を用いた微小径孔の脱水特性

    渡邉達也, 星貴之, 山口大介, 原正之, 高崎正也, 水野毅, 石野裕二

    日本機械学会2016年度年次大会  2016.9.16 

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  • 極低温環境用ソフトアクチュエータにおけるリーク量の屈曲回数依存性の評価

    花木樹也, 山口大介, 石野裕二, 原正之, 高崎正也, 水野毅

    2016年度精密工学会秋季大会  2016.9.8 

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  • 超音波振動子と対向面を用いたポンプの開発(第4報)-ギャップの計測-

    品田裕壮, 石野裕二, 山口大介, 原正之, 高崎正也, 水野毅

    2016年度精密工学会秋季大会  2016.9.8 

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  • Pneumatic Actuator using Polyimide Film for Liquid Nitrogen Temperature

    D. Yamaguchi, T. Hanaki, R. Kamimura, Y. Ishino, M. Hara, M. Takasaki, T. Mizuno

    Actuator 2016  2016.6.13 

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  • 極低温環境下で駆動可能なフィルモティクス用簡易配管方法の検討

    山口大介, 花木樹也, 上村崚太郎, 石野裕二, 原 正之, 高崎 正也, 水野毅

    ロボティクス・メカトロニクス講演会2016  2016.6.10 

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  • 人称視点での自己インタラクションに関する研究

    清水親, 原正之, 山口大介, 石野裕二, 高崎正也, 水野毅

    ロボティクス・メカトロニクス講演会2016  2016.6.9 

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  • 多重式磁気浮上システムの開発(第14報:柔軟構造を有する浮上体を用いた並列多重磁気浮上システムの可制御性と可観測性)

    成澤慶宜, 石野裕二, 山口大介, 原正之, 高崎正也, 水野毅

    第28回「電磁力関連のダイナミクス」シンポジウム  2016.5.18 

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  • 極限環境に適用可能なソフトアクチュエータの基礎特性評価

    山口大介, 花木樹也, 上村崚太郎, 石野裕二, 原正之, 高崎正也, 水野毅

    第28回「電磁力関連のダイナミクス」シンポジウム  2016.5.18 

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  • 磁路制御式磁気浮上の大ギャップ化に関する研究(第1報:制御板の磁力源側配置の提案)

    山田和樹, 石野裕二, 山口大介, 原正之, 髙﨑正也, 水野毅

    第28回「電磁力関連のダイナミクス」シンポジウム  2016.5.18 

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  • 制御系のリミットサイクルを利用した質量測定の高精度化(第1報:センサとコントローラの遅れの影響)

    石橋尚宜, 渡邊怜, 石野裕二, 山口大介, 原正之, 高崎正也, 水野毅

    第28回「電磁力関連のダイナミクス」シンポジウム  2016.5.17 

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  • 超音波振動子と対向面を用いたポンプ(第3報)-ギャップの観測-

    品田裕壮, 石野裕二, 山口大介, 原正之, 高崎正也, 水野毅

    第16回日本機械学会機素潤滑設計部門講演会  2016.4.18 

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  • 極低温環境用空圧フィルムアクチュエータの性能向上を目的としたポリイミドフィルム溶着状態の評価

    上村崚太郎, 山口大介, 花木樹也, 原正之, 石野裕二, 高崎正也, 水野毅

    2016年度精密工学会春季大会  2016.3.15 

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  • 超音波振動子と対向面を用いたポンプの開発(第2報)対向面形状の違いによる流れ方向の変化

    豅遥子, 品田裕壮, 石野裕二, 原正之, 山口大介, 高崎正也, 水野毅

    2016年度精密工学会春季大会  2016.3.15 

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  • 運動とヒトの身体認知の関係ついての検討

    原正之, 松下光次郎, 鈴木雄大, 藤森勇佑, 山口大介, 石野裕二, 佐々木実, 高崎正也, 水野毅

    第16回計測自動制御学会システムインテグレーション部門講演会  2015.12.16 

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  • Driving Performance of Soft Film Actuator for Liquid Nitrogen Temperature Environment

    Tatsuya Hanaki, Daisuke Yamaguchi, Yuji Ishino, Masayuki Hara, Masaya Takasaki, Takeshi Mizuno

    The 19th International Conference on Mechatronics Technology (ICMT2015)  2015.11.18 

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  • 屋外における長時間浮上を目的としたソーラー磁気浮上搬送車の構想と設計

    石野 裕二, 水野 毅, 高崎 正也, 原 正之, 山口 大介

    第58回自動制御連合講演会  2015.11.15 

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  • 磁石の運動制御を利用した反発形磁気軸受におけるラジアル方向制振制御(第1報:制振の原理)

    水野 毅, 石野 裕二, 髙﨑 正也, 山口 大介, 原 正之

    第58回自動制御連合講演会  2015.11.14 

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  • カンチレバー式ゼロコンプライアンス機構を用いた力測定システムの開発 第 1 報: 測定原理

    林 陽一郎, 水野 毅, 高崎 正也, 石野裕二, 山口大介, 原 正之

    第4回MAGDALENAコンファレンス  2015.11.12 

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  • ロボット技術を用いたRHI実験システム

    原正之, 山口大介, 石野裕二, 高崎正也, 水野毅

    第七回多感覚研究会  2015.11 

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  • 触り心地を変化させるDiminished Haptics Device

    山口大介, 落合陽一, 星貴之, 高崎正也

    第七回多感覚研究会  2015.11 

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  • Precise Positioning Characteristics of Multi-Mode Ultrasonic Motor

    Masaya Takasaki, Shuo Zhang, Masayuki Hara, Daisuke Yamaguchi, Yuji Ishino, Takeshi Mizuno

    2015 IEEE International Ultrasonics Symposium  2015.10.24 

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  • Proposal of Lateral Vibration Control Based on Force Detection in Mag-netic Suspension System

    Asief JAVED, Takeshi MIZUNO, Masaya TAKASAKI, Yuji SHINO, Masayuki HARA, Daisuke YAMAGUCHI

    The 17th International Symposium on Applied Electromagnetics and Mechanics (ISEM2015)  2015.9.17 

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  • 磁界共振結合を用いた交流磁気浮上に関する研究 第5報:数学モデルに基づく安定性解析

    清藤温, 水野毅, 高崎正也, 石野裕二, 山口大介, 原正之

    第4回MAGDALENAコンファレンス  2015.9.12 

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  • ロボットによる刺激提示を用いたFull Body Illusionの研究

    原正之, 難波江裕之, 山口大介, 石野裕二, 高崎正也, 水野毅

    第33回日本ロボット学会学術講演会  2015.9.4 

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  • 超音波支持における水平方向作用力発生原理の仮説と分類

    三宅健, 山口大介, 原正之, 石野裕二, 髙﨑正也, 水野毅

    2015年度精密工学会秋季大会学術講演会  2015.9.4 

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  • 拮抗駆動型液体窒素温度環境用ソフトアクチュエータの試作と評価

    山口大介, 花木樹也, 上村崚太郎, 原正之, 石野裕二, 高崎正也, 水野毅

    2015年度精密工学会秋季大会 学術講演会  2015.9.4 

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  • 磁界共振結合を用いた交流磁気浮上に関する研究(第4報:浮上特性の評価)

    郡川智行, 水野毅, 高崎正也, 石野裕二, 原正之, 山口大介

    Dynamics and Design Conference 2015(D&D2015)  2015.8.26 

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  • ゼロコンプライアンス機構を利用した三分力測定装置の開発(第1報:基本構想と測定機構の製作)

    飯田啓介, 水野毅, 髙崎正也, 石野裕二, 山口大介, 原正之

    Dynamics and Design Conference 2015(D&D2015)  2015.8.26 

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  • Efficiency Evaluation Method for Vibration Energy Harvesting by Piezoelectric Bimorph

    Fumiki Sato, Shuo Zhang, Yuji Ishino, Masayuki Hara, Daisuke Yamaguchi, Masaya Takasaki, Takeshi Mizuno

    ASPEN2015  2015.8.17 

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  • Comparison of Zero-Power Controllers in Double Parallel Magnetic Suspension System With Parallel Connected Coils

    Yoshinori NARISAWA, Daisuke YAMAGUCHI, Masayuki HARA, Masaya TAKASAKI, Takeshi MIZUNO, Yuji ISHINO

    ASCC2015  2015.6.3 

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  • Development of Non-contact Carrier System using Solar Magnetic Suspension 3rd

    Yuji ISHINO, Takeshi MIZUNO, Masaya TAKASAKI, Masayuki HARA, Daisuke YAMAGUCHI

    ASCC2015  2015.6.3 

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  • Proposal of Pen Tablet Type Tactile Display Using Stylus with Built-in Ultrasonic Transducer

    Hasebe, Y. Ishino, M. Hara, D. Yamaguchi, M. Takasaki, T. Mizuno

    The 6th International Conference on Manufacturing, Machine Design and Tribology  2015.5.24 

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  • Proposal of Wind Power Generator using Solar Zero-power Magnetic Suspension

    Huajun CHEN, Takeshi MIZUNO, Yuji ISHINO, Daisuke YAMAGUCHI, Masayuki HARA, Masaya TAKASAKI

    The 4th Korea-Japan Joint Symposium on Dynamics and Control  2015.5.23 

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  • Fabrication and Evaluation of Soft Film Actuator for Low Temperature Environment

    Daisuke Yamaguchi, Tatsuya Hanaki, Yuji Ishino, Masayuki Hara, Masaya Takasaki, Takeshi Mizuno

    The 6th International Conference on Manufacturing, Machine Design and Tribology  2015.5.23 

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  • ポリイミドフィルムを用いた液体窒素温度環境用ガス圧ソフトアクチュエータの試作と評価

    花木樹也, 山口大介, 石野裕二, 原正之, 高崎正也, 水野毅

    ロボティクス・メカトロニクス講演会2015  2015.5.19 

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  • ヒトの行動主体性と身体所有感の関係についての検討

    原正之, 山口大介, 石野裕二, 高崎正也, 水野毅

    ロボティクス・メカトロニクス講演会2015  2015.5.18 

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  • 宇宙環境における使用を目的としたソフトアクチュエータの提案と試作

    山口大介, 花木樹也, 石野裕二, 原正之, 高崎正也, 水野毅

    ロボティクス・メカトロニクス講演会2015  2015.5.18 

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  • 遮束型可変磁路式磁気浮上機構の極配置法に基づく制御系設計

    竹内倭, 原正之, 山口大介, 石野裕二, 高崎正也, 水野毅

    第27回「電磁力関連のダイナミクス」シンポジウム  2015.5.15 

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  • Proposal of Pump Using Ultrasonic Transducer and Opposing Surface

    Hiroaki Shinada, Yuji Ishino, Daisuke Yamaguchi, Masaya Takasaki, Takeshi Mizuno

    International Congress on Ultrasonic  2015.5.13 

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  • 遮束型可変磁路式磁気浮上機構のゼロパワー制御に関する研究

    竹内倭, 原 正之, 山口大介, 石野裕二, 高崎正也, 水野 毅

    関東学生会第54回学生員卒業研究発表講演会  2015.3.22 

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  • 圧電振動子による振動エネルギ回生の効率測定法に関する研究

    佐藤史樹, 張爍, 石野裕二, 山口大介, 原正之, 高崎正也, 水野毅

    2015年度精密工学会春季大会学術講演会  2015.3.20 

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  • 液体窒素温度環境用ソフトアクチュエータの試作

    花木 樹也, 山口大介, 石野裕二, 原 正之, 高崎正也, 水野 毅

    関東学生会第54回学生員卒業研究発表講演会  2015.3.20 

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  • 非接触給電機能を備えた磁気支持ジャイロセンサの開発

    清藤 温, 山口大介, 石野裕二, 原 正之, 高崎正也, 水野 毅

    関東学生会第54回学生員卒業研究発表講演会  2015.3.20 

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  • カンチレバーを利用したゼロコンプライアンス行き微小力測定

    林 陽一郎, 山口大介, 石野裕二, 原 正之, 高崎正也, 水野 毅

    関東学生会第54回学生員卒業研究発表講演会  2015.3.20 

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  • 超音波振動子と対向面を用いたポンプの開発(第1 報)-ポンプ効果の観測-

    品田裕壮, 石野裕二, 山口大介, 原正之, 高崎正也, 水野毅

    2015年度精密工学会春季大会学術講演会  2015.3.18 

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  • 強磁場環境下における触覚呈示を目的としたボルト締めランジュバン型振動子の試作設計

    山口大介, 原正之, 石野裕二, 高崎正也, 水野毅

    2015年度精密工学会春期大会学術講演会  2015.3.18 

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  • 超音波振動子内蔵方式ペンタブレット型皮膚感覚ディスプレイ

    長谷部和彦, 石野裕二, 山口大介, 高崎正也, 水野毅

    第15回公益社団法人計測自動制御学会 システムインテグレーション部門講演会  2014.12.18 

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  • 極低温環境用ソフトアクチュエータの提案と試作設計

    山口大介, 花木樹也, 石野裕二, 高崎正也, 水野毅

    第15回公益社団法人計測自動制御学会 システムインテグレーション部門講演会  2014.12.16 

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  • 極低温用超音波モータの駆動特性の温度依存性

    中薗正浩, 神田岳文, 山口大介, 鈴森康一

    第35回超音波エレクトロニクスの基礎と応用に関するシンポジウム  2014.12.5 

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  • 超音波振動子と対向面によるポンプ効果

    品田裕壮, 石野裕二, 山口大介, 高崎正也, 水野毅

    第35回超音波エレクトロニクスの基礎と応用に関するシンポジウム  2014.12.4 

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  • ゼロコンプライアンス機構を利用したトルク計測装置の開発 第1報:測定原理と基礎実験装置の開発

    ムハマド イザーン, 石野裕二, 山口大介, 高崎正也, 水野毅

    第23回MAGDAコンファレンス  2014.12.4 

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  • Driving System of Diminished Haptics: Transformation of Real World Textures

    Daisuke Yamaguchi, Yoichi Ochiai, Takayuki Hoshi, Jun Rekimoto, Masaya Takasaki

    Asia Haptics 2014  2014.11.19 

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  • 極低温用超音波モータの等価回路を用いた特性評価

    山口大介, 野口祐也, 神田岳文, 鈴森康一

    2014年度精密工学会秋期大会学術講演会  2014.9.16 

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  • Evaluation of Thermal Stress of Transducers for Cryogenic Ultrasonic Motors

    Yuya Noguchi, Daisuke Yamaguchi, Takefumi Kanda, Koichi Suzumori

    2014 IEEE International Ultrasonics Symposium  2014.9.6 

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  • Ultrasonic Motor for sample spinning of solid-state nuclear magnetic resonance spectrometer in high magnetic field

    Daisuke Yamaguchi, Dai Takeda, Takefumi Kanda, Koichi Suzumori

    2014 IEEE International Ultrasonics Symposium  2014.9.6 

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  • 超音波モータの固体 NMR 分析用試料回転機構への応用

    山口大介, 武田大, 神田岳文, 鈴森康一, 竹腰清乃理, 水野敬, 山本啓太

    日本機械学会 ロボティクス・メカトロニクス講演会2014  2014.5.27 

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  • ねじり振動子共振駆動型極低温用超音波モータ

    黒田雅貴, 神田岳文, 鈴森康一, 山口大介

    日本機械学会 ロボティクス・メカトロニクス講演会2014  2014.5.27 

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  • 極低温用ランジュバン型振動子の熱応力に関する検討

    中薗正浩, 神田岳文, 鈴森康 一, 山口大介, 野口祐也, 黒田雅貴

    第14回 日本機械学会 機素潤滑設計部門講演会  2014.4.22 

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  • 極低温用ボルト締めランジュバン型振動子の等価回路を用いた性能評価

    山口大介, 神田岳文, 鈴森康一, 黒田雅貴, 武田大, 野口祐也, 中薗正浩

    2014年度精密工学会春季大会学術講演会  2014.3.19 

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  • Relationship between performance of transducer and piezoelectricity at ultralow temperature

    Daisuke Yamaguchi, Takefumi Kanda, Koichi Suzumori

    The 34th Symposium on Ultrasonic Electronics,  2013.11.21 

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  • 極低温環境用超音波モータの振動子の試作・評価

    野口祐也, 神田岳文, 鈴森康一, 山口大介, 武田大, 黒田雅貴

    2013年度精密工学会秋季大会学術講演会  2013.9.12 

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  • 極低温環境における圧電性の温度依存性評価と振動子への応用

    山口大介, 神田岳文, 鈴森康一, 野口祐也

    2013年度精密工学会秋季大会学術講演会  2013.9.12 

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  • 極低温環境用アクチュエータへの適用を目的とした超音波振動子の検討

    神田岳文, 山口大介, 鈴森康一, 黒田雅貴, 武田大, 野口祐也

    日本機械学会 2013年度年次大会  2013.9.10 

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  • 極低温超音波モータ用振動子の熱応力低減に関する研究

    野口祐也, 神田岳文, 鈴森康一, 山口大介, 黒田雅貴

    日本機械学会 2013年度年次大会  2013.9.10 

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  • 高・低速駆動可能な極低温用超音波モータの駆動評価

    黒田雅貴, 山口大介, 神田岳文, 鈴森康一, 野口祐也, 中薗正浩

    第31回日本ロボット学会学術講演会  2013.9.5 

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  • Evaluation of Piezoelectric Materials for Cryogenic Ultrasonic Motor

    Daisuke Yamaguchi, Takefumi Kanda, Koichi Suzumori

    2013 Joint UFFC, EFTF and PFM Symposium  2013.7.22 

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  • Evaluation of Piezoelectric Materials for Transducer at Ultralow Temperature

    Daisuke Yamaguchi, Takefumi Kanda, Koichi Suzumori

    10th International Workshop on Piezoelectric Materials and Applications and 8th Energy Harvesting Workshop  2013.7.17 

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  • 極低温環境における圧電材料の評価と振動子への応用

    山口大介, 神田岳文, 鈴森康一

    2013年度精密工学会春季大会学術講演会  2013.3.13 

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  • Evaluation of a vibrator for a cryogenic ultrasonic motor using titanium

    Dai Takeda, Daisuke Yamaguchi, Takefumi Kanda, Koichi Suzumori, Yuya Noguchi

    The 33th Symposium on Ultrasonic Electronics  2012.11.15 

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  • Thermal Characteristics of a PMN-PT Single Crystal and an Ultrasonic Motor in Ultralow Temperature Environment

    Daisuke Yamaguchi, Takefumi Kanda, Koichi Suzumori, Yuya Noguchi

    The 33th Symposium on Ultrasonic Electronics  2012.11.15 

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  • 極低温超音波モータ用振動子の改良とモータの評価

    黒田雅貴, 山口大介, 武田大, 野口祐也, 神田岳文, 鈴森康一

    第30回日本ロボット学会学術講演会  2012.9.18 

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  • Design and Evaluation of Ultrasonic Motor Using Bolt-clamped Langevin-type Transducer for Ultralow Temperature

    Daisuke Yamaguchi, Takefumi Kanda, Koichi Suzumori, Masataka Kuroda, Dai Takeda

    CTUATOR 2012, 13th International Conference on New Actuators  2012.6.18 

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  • 固体NMR分析における試料回転機構への応用を目的とした超音波モータの駆動評価

    藤澤和也, 山口大介, 神田岳文, 鈴森康一

    日本機械学会 ロボティクス・メカトロニクス講演会2012  2012.5.29 

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  • 極低温用超音波モータに用いるボルト締めランジュバン型振動子の改良

    黒田雅貴, 山口大介, 武田大, 神田岳文, 鈴森康一

    日本機械学会 ロボティクス・メカトロニクス講演会  2012.5.29 

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  • 極低温・強磁場の複合極限環境下での使用を目的とした超音波モータの試作・評価

    武田大, 山口大介, 藤澤和也, 神田岳文, 鈴森康一

    第12回機素潤滑設計部門講演会  2012.4.23 

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  • Driving Performance of the Ultrasonic Motor Using PMN-PT Single Crystal at Ultralow Temperature

    Daisuke Yamaguchi, Takefumi Kanda, Koichi Suzumori, Dai Takeda, Masataka Kuroda

    International Workshop on Piezoelectric Materials and Applications in Actuators 2012  2012.4.23 

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  • PMN-PT単結晶を用いた超音波モータの極低温環境における特性評価

    山口大介, 神田岳文, 鈴森康一, 武田大, 黒田雅貴

    2012年度 精密工学会春季大会  2012.3.14 

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  • A Design and Evaluation of Ultrasonic Motor Using PMN-PT single crystal for ultralow temperature

    Daisuke Yamaguchi, Takefumi Kanda, Koichi Suzumori, Masataka Kuroda, Dai Takeda

    The 32th Symposium on Ultrasonic Electronics  2011.11.9 

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  • Design and Evaluation of Ultrasonic Motor Located in Cryogenic Temperature Environments

    Daisuke Yamaguchi, Takefumi Kanda, Koichi Suzumori

    IEEE International Ultrasonics Symposium 2011  2011.10.20 

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  • PMN-PT単結晶を用いた極低温用ボルト締めランジュバン型振動子の試作・評価

    山口大介, 神田岳文, 鈴森康一

    2011年度精密工学会秋季大会学術講演会  2011.9.22 

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  • 低温環境用圧電アクチュエータの検討

    神田岳文, 山口大介, 鈴森康一, 黒田雅貴

    第29回日本ロボット学会学術講演会  2011.9.9 

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  • ボルト締めランジュバン型振動子を用いた極低温用超音波モータの温度特性評価

    山口大介, 神田岳文, 鈴森康一

    第29回日本ロボット学会学術講演会  2011.9.9 

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  • ボルト締めランジュバン型振動子を用いた極低温用超音波モータの駆動特性評価

    山口大介, 神田岳文, 鈴森康一

    日本機械学会 ロボティクス・メカトロニクス講演会2011  2011.5.27 

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  • 水熱合成法を用いたPLZT成膜条件の改良とアクチュエータの評価

    殿界明真, 山口大介, 神田岳文, 鈴森康一

    日本機械学会 ロボティクス・メカトロニクス講演会2011  2011.5.27 

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  • 極低温用超音波モータの駆動源を目的とした振動子の試作・評価

    山口大介, 神田岳文, 鈴森康一

    第23回「電磁力関連のダイナミクス」シンポジウム  2011.5.18 

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  • A Design of Bolt-Clamped Langevin-Type Transducer for Cryo Ultrasonic Motor

    Daisuke Yamaguchi, Takefumi Kanda, Koichi Suzumori

    The 4th International Conference on Manufacturing, Machine Design and Tribology  2011.4.25 

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  • ボルト締めランジュバン型振動子を用いた極低温用超音波モータ

    山口大介, 神田岳文, 鈴森康一

    精密工学会 2011年度春季大会  2011.3.14 

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  • PLZT Film Actuators Deposited by a Hydrothermal Method

    Akimasa Tonokai, Takefumi Kanda, Daisuke Yamaguchi, Koichi Suzumori

    IEEE International Conference on Robotics and Biomimetics (ROBIO2010)  2010.12.17 

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  • 低温環境用圧電アクチュエータの試作設計

    神田岳文, 山口大介, 鈴森康一

    第28回日本ロボット学界学術講演会  2010.9.22 

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  • 水熱合成法PLZT薄膜を用いた光駆動アクチュエータの特性評価

    殿界明真, 神田岳文, 鈴森康一, 山口大介

    2010年度精密工学会春季大会学術講演会  2010.4.19 

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  • 水熱合成法を用いた圧電薄膜アクチュエータの紫外光駆動

    山口大介, 殿界明真, 神田岳文, 鈴森康一

    第1回マイクロ・ナノ工学シンポジウム  2009.10.15 

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  • フィルモティクスへの応用を目的とした極薄型バルブの原理確認

    山口大介, 真鍋達矢, 石野裕二, 原正之, 高崎正也, 水野毅

    第29回「電磁力関連のダイナミクス」シンポジウム(SEAD29) 

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Works

  • 接着剤や固定部材を用いないポリイミドフィルム積層体

    山口大介

    2022.9.29

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  • テクノフロンティア2022

    2022.7.20
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    2022.7.22

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  • テクノフロンティア2021

    2021.6.23
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    2021.6.25

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Awards

  • 研究奨励賞

    2021.9   一般社団法人日本ロボット学会   圧電材料・空圧を駆動源とする極限環境用ロボット向けアクチュエータに関する研究

    山口大介

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  • FA財団論文賞

    2020.12   一般社団法人FA財団   Force Measurement Using Zero-Compliance Mechanism

    Takeshi Mizuno, Yuji Ishino, Hiroki Kawada, Yoichiro Hayashi, Masaya Takasahi, Masayuki Hara, Daisuke Yamaguchi

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  • 日本機械学会奨励賞(研究)

    2019.4   日本機械学会   極限環境において駆動を実現するアクチュエータの研究

    山口大介

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  • 日本AEM学会論文賞

    2017.10   日本AEM学会  

    Shahajada Mahmudul HASAN, Takeshi MIZUNO, Masaya TAKASAKI, Yuji ISHINO, Masayuki HARA, Daisuke YAMAGUCHI

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  • SI2014優秀講演賞

    2014.12   第15回公益社団法人計測自動制御学会システムインテグレーション部門講演会  

    山口 大介

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  • 仁科賞

    2014.3   仁科顕彰会  

    山口 大介

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  • 超音波シンポジウム(USE2011)奨励賞

    2012.11   第33回超音波エレクトロニクスの基礎と応用に関するシンポジウム運営委員会  

    山口 大介

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  • [9] 2012年度精密工学会春季大会学術講演会ベストプレゼンテーション賞

    2012.3   精密工学会  

    山口 大介

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Research Projects

  • rレーザー彫刻を用いたゴム成型を必要としないラバーアクチュエータ製作手法

    2022.04

    公益財団法人油空圧機器技術振興財団  研究助成金 

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  • 樹脂を対象とする前処理・添加剤・接着剤フリーなレーザ接合技術の開発

    2022.03 - 2023.03

    国立研究開発法人 新エネルギー・産業技術総合開発機構(NEDO)  官民による若手研究者発掘支援事業 マッチングサポートフェーズ  受託研究

    山口大介

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  • 樹脂フィルムへのテクスチャリングで製作可能な極薄アクチュエータの開発

    2021.04 - 2022.03

    公益財団法人スズキ財団  令和2年度若手科学技術研究助成 

    山口大介

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  • スーパーエンジニアリングプラスチックフィルム同士の溶着におけるラピッドプロトタイピング手法の開発

    2020.06 - 2021.02

    岡山県  令和2年度特別電源所在県科学技術振興事業における大学等委託研究事業 

    山口大介

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  • Micro cryogenic piezoelectric transducers for non contact drive actuator

    Grant number:19H02054  2019.04 - 2022.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)  Grant-in-Aid for Scientific Research (B)

    神田 岳文, 山口 大介

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    Authorship:Coinvestigator(s) 

    Grant amount:\17940000 ( Direct expense: \13800000 、 Indirect expense:\4140000 )

    当該年度は1.極低温環境用アクチュエータの小型化を実現する予圧機構を用いた圧電振動子、および、2.極低温環境下でヘリウム中での音響放射圧を利用した浮上機構の2点について研究を行った。1.の項目では、予圧機構を実現するための設計手法に関する検討と、これに必要な各種材料定数を得るための実験環境の整備を行った。金属材料とセラミックスの圧電材料では膨張係数の差が大きく、圧電材料を金属材料で挟んだ状態の10cm3程度の大きさのアクチュエータにおいて、室温から極低温への300Kの変化により数十MPaの圧力変化が生じることが想定される。振動子設計のためのデータ収集とアクチュエータの評価を目的として、光学的・機械的測定系を構成して低温環境での変位・歪計測を行うために窓付きクライオスタットを導入した。また、有限要素法により温度依存性を考慮して設計を行った小型の予圧機構について導入した装置内での振動特性の評価を行い、予圧印加の効果が得られていることを示した。2.の項目では、極低温環境下のヘリウム中で超音波振動子により発生させた音響放射圧で、振動子先端に対向して配置した物体を浮上させることを目標とした。ヘリウムの密度は小さく、室温でも空気の7分の1程度であり、物体に作用する音響放射圧は、超音波振動子から媒質への音響放射効率は低下することが予想される。ヘリウムを媒質とした際に十分な音響放射圧が得られる振動子構成についてシミュレーションも交えて検討し、浮上が可能であることについてボルト締め型の圧電振動子により原理的な検証実験を行った。導入したクライオスタットを利用した装置内で光学的な測定を行い、低温環境で浮上が実現できていることを示した。

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  • Development of welding technology for PI films with complicated shape and applying to pneumatic motor

    Grant number:19K14874  2019.04 - 2022.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Early-Career Scientists  Grant-in-Aid for Early-Career Scientists

    山口 大介

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    Authorship:Principal investigator 

    Grant amount:\4290000 ( Direct expense: \3300000 、 Indirect expense:\990000 )

    本研究では,極限環境下で駆動を行う空圧ステッピングモータの開発を最終目標とし,異分野の研究とされる材料の加工技術の確立から機械要素(アクチュエータ)技術の設計・製作・評価までを一貫して取り組む.本年度は,新たな前処理・添加剤レス溶着の開発と,本溶着手法を用いてモータの駆動源となるポリイミド(PI)製気室の実現を行った.
    あらかじめ立体成型を行ったPIフィルムに対して,溶着部の平行度・表面粗さに大きく依存しない前処理・添加剤レス溶着の開発を行った.溶着面全体にかかる圧力を均等とすることで押付圧力による溶着の不均一さを減少させるために,本研究では,低弾性係数を有する耐熱材料を基準面と固定金型の間に敷き,その変形を利用することで金型同士の平行度を補正し,また溶着対象であるPIフィルムと金型の間にグリスを塗布することで金型の表面粗さの影響を緩和した.これにより,立体成型を行ったフィルムに対しても安定した溶着を実現した.
    また,これまで空圧シリンダによる予圧印加機構を採用していたが,がたつきの影響による成型フィルム同士の溶着しろのズレ,平行度における課題が存在していた.そこで金型同士をボルト締結により固定し,締め付けトルクを工夫することで予圧を均等に金型へ印加する設計手法について確立した.これにより,精密に位置決めを行った金型同士での溶着ができ,溶着代のズレを抑えた.また金型自体にヒータを接続できるようになった事から,加熱・冷却に必要となる時間を大幅に削減した.
    試作した空気室の特性評価を行い,モータを駆動するのに十分な性能を有していることを確認した.また試験的に空圧モータへ取り付けることでモータの駆動を確認した.

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  • Influence of Vibration Frequency on Ultrasonic Tactile Displays

    Grant number:18KK0107  2019.02 - 2024.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))  Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))

    高崎 正也, 山口 大介, 水野 毅

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    Grant amount:\17680000 ( Direct expense: \13600000 、 Indirect expense:\4080000 )

    人の触覚のひとつ皮膚感覚(つるつる・ざらざらといった感覚を受容)を提示するデバイス「皮膚感覚ディスプレイ」であって,プレート形超音波振動子表面での摩擦制御を利用しているものを対象としている.現在のところ,超音波の周波数がディスプレイのパフォーマンス・制御性・製造コスト等に及ぼす影響が未知の状態である.非線形現象を多く含むため,数値計算による検討は困難であり,実際にその周波数の超音波振動子を製作して実験的な検討を行う必要がある.従前より,埼玉大学では15 MHzの振動子を,リール大学では30 kHzの振動子をそれぞれ用いてきた.本研究では,埼玉大学チームが周波数を下げていき,リール大学チームが周波数を上げていくアプローチをとる.超音波皮膚感覚ディスプレイを開発する際の超音波周波数選択の指標のためのデータベース構築を目指している.
    30 kHzから周波数を上げていくアプローチでは,研究協力者(Frederic Giraud准教授)の指導を受けながらプレート材質・寸法・圧電素子の設計を行い,リール大学の技術的支援を受けながら製作・調整を行っている.金属板にPZTプレートを接着した振動子の製作を行った.
    15 MHzから周波数を下げていくアプローチでは,圧電セラミクス(チタン酸ジルコン酸鉛:PZT)の板に電極を形成して高次モードの振動を励振することで800 kHz近傍に共振周波数を持つことを見いだした.超音波振動を間欠的に励振したところ,500 Hzでのon/offに追従させることが出来た.また,画像処理を用いた簡易指位置計測による制御でザラザラ感を提示することが出来た.

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  • ポリイミドフィルムを用いた極薄・極軽量インフレータブル構造体の検討

    2018.10 - 2020.03

    国立研究開発法人宇宙航空研究開発機構 宇宙探査イノベーションハブ  太陽系フロンティア開拓による人類の生存圏・領域拡大に向けたオープンイノベーションハブ 第4回研究提案募集(RFP)アイデア型 

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    Authorship:Principal investigator 

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  • 災害発生直後の極限環境における活動を実現するロボティクス技術の開発補助事業

    2016.05 - 2018.03

    公益財団法人JKA  機械工業振興補助事業 研究補助 若手研究(複数年) 

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  • Development of solar magnetic suspension carrier with self-propelled mechanism under outdoor environment

    Grant number:16K06146  2016.04 - 2019.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

    Ishino Yuji, MIZUNO Takeshi, TAKASAKI Masaya, HARA Masayuki, YAMAGUCHI Daisuke

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    Grant amount:\4550000 ( Direct expense: \3500000 、 Indirect expense:\1050000 )

    A non-contact magnetic suspension carrier system with a self-propelled mechanism on the rail was aimed 24 hours, 365 days non-contact levitation using the power supplied by the solar generator. Magnetic suspension carrier systems with electromagnets installed on a carrier can reduce initial cost than systems with electromagnets on a track rail. However, the carrier contacts power lines temporarily or continuously because it is necessary to supply power in the conventional carrier systems. A magnetic suspension carrier system combined with a non-contact-power-supplied by a solar power generation was developed to avoid such contact. The carrier system is installed with a secondary battery the power supply in the non-generated period. The carrier system can be achieved 120-hour-non-contact levitation while charging the on-board battery.

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  • Characteristic evaluation of polyimide film at liquid nitrogen temperature and application for soft actuator

    Grant number:15K20908  2015.04 - 2018.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)  Grant-in-Aid for Young Scientists (B)

    YAMAGUCHI Daisuke

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    Grant amount:\4160000 ( Direct expense: \3200000 、 Indirect expense:\960000 )

    In this research, we have developed a soft actuator that can be flexible near liquid nitrogen temperature (77K).
    To realize a soft actuator for an extreme environment, a welding technology of polyimide (PI) films was fabricated and evaluated. By using this technology, PI balloon and PI bending soft-actuator were realized.
    The actuator has succeeded in driving around -195 degrees Celsius, which was impossible to realize with conventional soft actuators.

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  • 液体窒素温度環境下で駆動可能なガス圧ソフトアクチュエータの開発

    2014.03 - 2015.03

    公益財団法人油空圧機器技術振興財団  研究助成金 

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  • Study on a micro electrostrictive or piezoelectric actuator for cryogenic environment

    Grant number:25420091  2013.04 - 2016.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

    Kanda Takefumi, YAMAGUCHI Daisuke, KURODA Masataka, TAKEDA Dai, NOGUCHI Yuya, NAKAZONO Masahiro, YAMADA Taiki

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    Grant amount:\5070000 ( Direct expense: \3900000 、 Indirect expense:\1170000 )

    The purpose of this research is to realize a micro actuator which can be driven under a cryogenic and high intensity magnetic field. In this study, the target is the material, structure and modeling for the actuator. For the realization of the actuator which has not a temperature dependency for the driving, a bolt-clamped Lngevin type transducer has been designed and evaluated. Using a finite element method, the temperature dependency has been evaluated about the transducer. Non-linear parameters about material properties were used for the simulation. As a result, the transducer which has not a temperature dependency for pre-load setting has been obtained by the simulation. The fabricated transducer under the design has been evaluated and used for the driving of the actuator. The transducer has successfully driven the actuator without the temperature dependency for the setting.

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  • 超音波モータの極低温環境における駆動

    Grant number:13J07608  2013

    日本学術振興会  科学研究費助成事業 特別研究員奨励費  特別研究員奨励費

    山口 大介

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    Grant amount:\1200000 ( Direct expense: \1200000 )

    極低温環境内において、高速回転操作を実現するアクチュエータが求められている。
    本研究の目的は、狭隘な極低温環境に設置可能な超音波モータの性能向上、および駆動源であるボルト締めランジュバン型振動子における予圧特性の温度依存性の低下である。本研究で得られた成果を要約すると、以下の通りである。
    1、ニオブ酸リチウムについて、極低温環境に共振・反共振法を適用することにより、極低温環境における圧電定数の測定を行った。ニオブ酸リチウムの圧電定数は小さいが、温度による依存が小さいことを確認した。
    2、室温から極低温までの温度低下により生じる熱応力を減少させることを目的とし、構造材料に純チタン、圧電材料にマグネシウムニオブ酸・チタン酸鉛固溶体(PMN-PT)を使用したボルト締めランジュバン型振動子を試作した。有限要素法解析および、極低温環境における駆動実験を通して、熱応力に関する評価を行った。これより、温度による温度依存性が減少し、使用温度に合わせた組み立て条件の調整が不要となった。
    3、上記、ボルト締めランジュバン型振動子を駆動源とする超音波モータの試作・評価を行った。90K以下の温度において、駆動実験を行い、いずれの温度においても回転を確認した。これより4.5Kにおいて印加電圧100Vp-p時に、1100rpmの回転数を実現した。
    4.5Kにおいて1000rpmを超える回転数を有する小型駆動源はこれまでになく、固体NMR分析をはじめ様々な分析機器に適用することで、装置の小型化・高性能化などが期待される。

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  • Research of rotary micro piezoelectric actuators for a high intense magnetic field and a cryogenic environment

    Grant number:21760114  2009 - 2011

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)  Grant-in-Aid for Young Scientists (B)

    KANDA Takefumi, YAMAGUCHI Daisuke

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    Grant amount:\4550000 ( Direct expense: \3500000 、 Indirect expense:\1050000 )

    The aim of this research is to realize the micro piezoelectric actuator for a high intense magnetic field and a cryogenic environment. There is a demand for high speed rotary type actuator for analysis equipments. By using bolt clamped Langevin type transducer and a simulation about the pre-load, we have realized the drive of rotor by the piezoelectric vibrator under the cryogenic condition. We have also succeeded in driving the rotary micro piezoelectric actuator under the condition of 10K and 7T.

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