Faculty Profiles - KANDA Takefumi

Other Link： https://jlc.jst.go.jp/DN/JALC/10009556897?from=CiNii

Design and evaluation of orifice arrangement for particle-excitation flow control valve Reviewed

Daisuke Hirooka, Koichi Suzumori, Takefumi Kanda

SENSORS AND ACTUATORS A-PHYSICAL 171 ( 2 ) 283 - 291 2011.11

Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER SCIENCE SA

In this article, we report a new particle-excitation flow control valve. The purpose of this study is the development of a particle-excitation flow control valve that can precisely control pneumatic cylinders. We have reported this flow control valve principle. The valve, driven by a PZT vibrator, has a simple lightweight structure with large flow rate. We report the relationship between the orifice arrangement and flow rate characteristics of the valve. We have designed a new prototype for the purpose of high controllability. We have measured flow-rate characteristics and confirmed the conditions necessary for continuous adjustment of flow quantity. The control valve works successfully to realize a change in flow rate. (C) 2011 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.sna.2011.07.009

Design and Evaluation of Emulsion Generation Device Using Ultrasonic Vibration and Microchannel Reviewed

Takefumi Kanda, Takuya Harada, Yoshiyuki Tominaga, Koichi Suzumori, Tsutomu Ono, Sotaro Iwabuchi, Kazuyuki Ito, Ken-ichi Ogawara, Kazutaka Higaki, Yuta Yoshizawa

Japanese Journal of Applied Physics 50 ( 7 ) 07HE24-1-07HE24-6 2011

Micro droplet generation using micropore plates oscillated by ultrasonic torsional transducers

Yusuke Kiyama, Yoshiyuki Tominaga, Takefumi Kanda, Koichi Suzumori, Yoshiaki Yamada, Norihisa Seno

2011 Int. Symp. on Micro-NanoMechatronics and Human Science, Symp. on "COE for Education and Research of Micro-Nano Mechatronics", Symposium on "Hyper Bio Assembler for 3D Cellular System Innovation" 88 - 93 2011

Language：English Publishing type：Research paper (international conference proceedings) Publisher：IEEE Computer Society

Monodisperse droplets have been an important subject in fields such as electronic materials, cosmetics productions and medical science. The goal of this study is to generate micro and uniform droplets in various viscosity liquids by using a micropore plate oscillated by an ultrasonic torsional transducer. When the micropore plate was not oscillated, droplets were generated irregularly. On the other hand, when the micropore plate was oscillated by the ultrasonic torsional transducer, droplets were generated regularly by ruffling liquid surface. We have generated droplets in the air by using pure water and silicone oil of various viscosities and evaluated droplets. We have designed the ultrasonic torsional transducer and a droplet generation device to apply a high pressure for the use of higher viscosity liquids. We have succeeded in generating droplets by using pure water when we used the ultrasonic torsional transducer. The average diameter of droplets was 30.0μm and the standard deviation was 0.98. We have also succeeded in generating 50cSt silicone oil droplets using the droplet generation device. The average diameter of droplets was 98.0μm and the standard deviation was 0.76. © 2011 IEEE.

DOI： 10.1109/MHS.2011.6102165

Multiplex pneumatic control method for multi-drive system Reviewed

Yasutaka Nishioka, Koichi Suzumori, Takefumi Kanda, Shuichi Wakimoto

SENSORS AND ACTUATORS A-PHYSICAL 164 ( 1-2 ) 88 - 94 2010.11

Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER SCIENCE SA

Pneumatic actuators have several advantages such as light weight safety low cost and high compliance However many pneumatic actuators have complicated systems that include a compressor air tubes and pneumatic valves with electrical wires This research proposes a new control method for a multiplex pneumatic transmission constructed with special resonant valves and air tubes with a control system driven by air vibration in air tubes without electrical wires The control is simplified and effective for pneumatic systems having many degrees of freedom In this paper the development of a primitive model of the resonant valve and a prototype valve is described In addition two control methods which are a superimposing method and a time-sharing method are shown and the independent driving of four actuators is realized by using one of the control methods with air tubes only (c) 2010 Elsevier B V All rights reserved

DOI： 10.1016/j.sna.2010.09.004

水圧マッキベン型人工筋を用いた不定形重量物用ハンドの開発 Reviewed

盛真唯子, 鈴森康一, 脇元修一, 神田岳文, 高橋正幸, 細谷高司, 竹松愛実

フルードパワーシステム 41 ( 3 ) 59 - 66 2010

An emulsion generating microchannel device oscillated by piezoelectric vibrator Reviewed

Takefumi Kanda, Koichi Suzumori, Takuya Harada, Tsutomu Ono, Sotaro Iwabuchi, Kazuyuki Ito, Ken-Ichi Ogawara, Kazutaka Higaki

2010 International Symposium on Micro-NanoMechatronics and Human Science: From Micro and Nano Scale Systems to Robotics and Mechatronics Systems, MHS 2010, Micro-Nano GCOE 2010, Bio-Manipulation 2010 13 - 18 2010

Language：English Publishing type：Research paper (international conference proceedings)

The goal of this study is to realize an emulsification device for the generation of sub-micron size monodisperse emulsions. We have fabricated and tested the device which consists of a microchannel plate and an ultrasonic vibrating plate. The device can realize continuous flow system and those plates are easily stacked. We have succeeded in generating emulsions which has a diameter of 80 nm. ©2010 IEEE.

DOI： 10.1109/MHS.2010.5669586

Micro actuator system for narrow spaces under specific environment Reviewed

Takefumi Kanda

Next-Generation Actuators Leading Breakthroughs 375 - 385 2010

Language：English Publishing type：Part of collection (book) Publisher：Springer London

This chapter describes micro actuator systems for narrow spaces under specific environments. In the fields of scientific or medical instruments, there is a great demand for micro sensors and actuators. We have fabricated some micro sensors and actuators which can be used under such specific environment. Two types of micro actuator systems for narrow spaces have been fabricated and evaluated. Those are for precise tool control unit and attitude control unit. In the precise tool control unit, a micro servo motor using the micro ultrasonic motor and the magnetic encoder have been designed and fabricated. In the attitude control, flexible displacement sensor made of piezoelectric polymer and shape memory alloy actuator driven by optical source. © 2010 Springer-Verlag London.

DOI： 10.1007/978-1-84882-991-6_32

Emulsion Generating Microchannel Device Oscillated by 2.25MHz Ultrasonic Vibrator Reviewed

Takuya Harada, Takefumi Kanda, Koichi Suzumori, Tsutomu Ono, Sotaro Iwabuchi, Kazuyuki Ito, Ken-ichi Ogawara, Kazutaka Higaki

JAPANESE JOURNAL OF APPLIED PHYSICS 49 ( 7 ) 07HE13-1-07HE13-6 2010

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

In this study, a device using an ultrasonic vibration and a microchannel has been developed to obtain emulsions. The process of generating emulsions involves a Y-type microchannel and an ultrasonic device. Once micron-sized emulsions were generated by the Y-type microchannel, the micron-sized emulsions were sonicated using ultrasonic vibration to produce emulsions. Although the diameter of emulsions was 30 mu m using the Y-type microchannel, the diameter of the sonicated emulsions was about 200 nm. In addition, as the applied voltage was increased, sonicated emulsions became smaller and the distribution became sharper. (C) 2010 The Japan Society of Applied Physics

DOI： 10.1143/JJAP.49.07HE13

Cylindrical Micro Ultrasonic Motor and Its Application to High Intensity Magnetic Field Reviewed

Takefumi KANDA

Science and Industry 84 ( 6 ) 239 - 244 2010

超音波振動を組み込んだマイクロ流路によるナノエマルション調製

小野努, 岩渕草太郎, 伊東一行, 原田拓也, 神田岳文, 鈴森康一, 大河原賢一, 檜垣和孝, 妹尾典久, 高野和潔, 門脇信傑, 大森啓士

化学工学会研究発表講演要旨集 2010 55 - 55 2010

Experimental evaluation of multiplex penumatic control drive

Yasutaka Nishioka, Koichi Suzumori, Takefumi Kanda, Shuichi Wakimoto

2010 World Automation Congress, WAC 2010 2010

Language：English Publishing type：Research paper (international conference proceedings)

Pneumatic actuators have several advantages, which are high compliance, light weight, safety, and cheapness. However, a pneumatic system is complicated because of electric wires and air supply lines from solenoid valve and compressor. We aim to simplify pneumatic system and proposed a new control method. The developed pneumatic system which is called multiplex pneumatic system is driven by air resonance vibration remotely witbout electric wires. Valves of the system have different resonance systems inside it each. When many actuators are driven by the valves this system is possible to drive the actuators independently using only one air tube supply. This system will be effective to the pneumatic system having many degrees of freedom. In this paper, in this paper, the experimental evaluation of four prototype valves for independent control is described. In addition tbe independent control of four pneumatic cylinders using a time-sharing method for multi driving is succeeded. © 2010 TSI Press.

Dynamic characteristics of pneumatic flow control valve driven by PZT vibrator

Daisuke Hirooka, Koichi Suzumori, Takefumi Kanda

2010 World Automation Congress, WAC 2010 2010

Language：English Publishing type：Research paper (international conference proceedings)

Pneumatic actuators have several advantages, which are high compliance, light weight, safety, and low-cost. Valve that can realize a continuous flowing quantity control is necessary to control pneumatic actuators precisely, while in general, such a valve is large. This study aims at the development of a new flow control valve that has a lightweight and simple structure can control flow-rate continuously. This valve uses piezoelectric transducer which is driven at resonance mode and it can control flow-rate by controlling the amplitude of the particles excitation. The flow control valve in this report is 10 mm in diameter, 9 mm in height and 2.5 g. We had already achieved ON/OFF control of large flowing quantity with the valve. In this report, we research dynamic characteristics of the valve. As the results of experiments, we found that the valve response time is 29 ms and flow rate change is almost equal to control signal. © 2010 TSI Press.

Droplet generation using a torsional Langevin-type transducer and a micropore plate Reviewed

Takuya Harada, Naoyuki Ishikawa, Takefumi Kanda, Koichi Suzumori, Yoshiaki Yamada, Ken-Ichiro Sotowa

SENSORS AND ACTUATORS A-PHYSICAL 155 ( 1 ) 168 - 174 2009.10

Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER SCIENCE SA

This paper reports on droplet generation by using a torsional bolt-clamped Langevin-type transducer and a micropore plate. When the micropore plate was not oscillated, droplets were generated irregularly. On the other hand, when the micropore plate was oscillated, droplets were generated regularly. In addition, by changing the micropore diameter, the generated droplets' diameter was varied in proportion to the micropore area. Under the condition that the pore diameter, the vibrational amplitude and the resonance frequency were 16 mu m, 0.62 mu m(p-p) and 56 kHz, respectively, the average diameter of droplets was 26.8 mu m and the standard deviation was 1.4. Additionally, W/O (water-in-oil) emulsions were generated in air-liquid phase by the transducer. Under the same condition, generated average diameter of emulsions was 35.0 mu m, the standard deviation was 1.9 and the coefficient of variance was 5.5. From this result, monodisperse emulsions were generated. (C) 2009 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.sna.2009.08.007

Flow control valve for pneumatic actuators using particle excitation by PZT vibrator Reviewed

Daisuke Hirooka, Koichi Suzumori, Takefumi Kanda

SENSORS AND ACTUATORS A-PHYSICAL 155 ( 2 ) 285 - 289 2009.10

Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER SCIENCE SA

This paper reports a new flow control valve for pneumatic actuators that has a lightweight and simple structure and uses particle excitation by PZT vibrator. The flow control valve in this report consists of an orifice plate which has plural orifices, PZT vibrator which is adhered on the orifice plate and iron particles. The valve is normally closed. because air flow carries the particles on to the orifice and particles seal the air flow. Because the orifice plate excitation by the PZT vibrator works to make the particles away from the orifice plate, the air flows through the orifices. It is driven at resonance mode and can be used as a variable speed controller for pneumatic actuators. The new flow control valve avoids the stopping shock of pneumatic actuators at the stroke ends while retaining the advantages of pneumatic actuators. (C) 2009 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.sna.2009.07.005

Realizing Spiral Laminar Flow Interfaces with Improved Micro Rotary Reactor Reviewed

Hiroaki Furusawa, Koichi Suzumori, Takefumi Kanda, Akinori Muto, Yusaku Sakata

Journal of Robotics and Mechatronics 21 ( 2 ) 179 - 185 2009

A cylindrical ultrasonic motor for NMR sample spinning in high magnetic field

Hiraku Maeda, Akihito Kobayashi, Takefumi Kanda, Koichi Suzumori, Kiyonori Takegoshi, Takashi Mizuno

Proceedings - IEEE Ultrasonics Symposium 2009

Language：English Publishing type：Research paper (international conference proceedings)

Recently, the demand for instruments that use high magnetic fields has increased in scientific and industrial fields. A high-resolution solid-state nuclear magnetic resonance (NMR) system is one such example. In a solid-state NMR, analytical samples are required to spin accurately at high speed in the high magnetic field. Ultrasonic motors have advantages in such environments. This research aims to develop a cylindrical micro ultrasonic motor for the solid-sate NMR. We fabricated a cylindrical ultrasonic motor mainly using nonmagnetic materials. The motor's maximum diameter and the height are 11 and 47.9 mm, including the sample case. We evaluated its driving performance in a magnetic field of 7 T. In addition, we successfully obtained the 1H-NMR signals of H2O with the motor. The result shows the NMR ultrasonic motor is available for the sample spinning of the solid-state NMR. ©2009 IEEE.

DOI： 10.1109/ULTSYM.2009.5441838

Pneumatic flow control valve using particle excitation by PZT transducer

Daisuke Hirooka, Koichi Suzumori, Takefumi Kanda

Proceedings - IEEE Ultrasonics Symposium 1624 - 1627 2009

Language：English Publishing type：Research paper (international conference proceedings) Publisher：Institute of Electrical and Electronics Engineers Inc.

This paper reports a flow control valve for pneumatic actuators. This flow control valve has a lightweight and simple structure using particle excitation by PZT transducer, which is driven at resonance mode and it can be used as a variable speed controller for pneumatic actuators. A PZT transducer has been used for controlling flow rate in this study. The flow control valve in this report consists of an orifice plate, a PZT transducer which is fixed on the orifice plate with the bolt, and the iron particles of 0.8mm diameter. From the experiments of flowing quantity evaluation, this flow control valve achieves a maximum flow rate of 62.65 L/min under applying voltage of 79.9 Vp-p and air pressure of 0.70 MPa. The results show that the ratio of the flow capacity /valve weight is about ten times larger than that of typical commercial valves. ©2009 IEEE.

DOI： 10.1109/ULTSYM.2009.5441678

Flexible displacement sensor using injected conductive paste Reviewed

Kenji Kure, Takefumi Kanda, Koichi Suzumori, Shuichi Wakimoto

SENSORS AND ACTUATORS A-PHYSICAL 143 ( 2 ) 272 - 278 2008.5

Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER SCIENCE SA

This paper reports on the fabrication procedure and the evaluation of a sensor with a flexible structure. Recently, because welfare robots with soft structures are being developed, there has been considerable progress in developing various soft actuators. Usually, however, sensors have high stiffness and diminish the compliance of soft actuators. In this study, a soft actuator's displacement was detected with a flexible displacement sensor using deposited conductive paste film. When the film was deformed, the sensor's electrical resistance changed, making a large deformation detectable. Initially, a flat type displacement sensor was fabricated, and its basic characteristics were evaluated. Then, an optimal wave patterning method that improved on the sensor signal's linearity was proposed. Finally, the flexible displacement sensor was formed onto the surface of a flexible microactuator (FMA). A servo control for the soft actuator was constructed with the flexible displacement sensor and high positioning accuracy was demonstrated. (c) 2007 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.sna.2007.11.031