論文 Basic Characterization of Magnetocoated Wire Fabricated Using Spray Method IEEE TRANSACTIONS ON MAGNETICS,53(11):- 2017(Nov.) Author:Konno, Yasuyuki; Yamamoto, Tatsuya; Chai, Yuki; Tomoya, Dobashi; Bu, Yinggang; Mizuno, Tsutomu;
Equalization Method of the Wireless Power Transfer in an Electronic Shelf Label Power Supply System IEEE TRANSACTIONS ON MAGNETICS,53(11):- 2017(Nov.) Author:Bu, Yinggang; Mukhopadhyay, Subhas Chandra;
Effect of core and magnetoplated wire on energy harvesting using leakage flux recovery coil INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS,52(3-4):1341-1349 2016 Author:Yamamoto, Tatsuya; Bu, Yinggang; Mizuno, Tsutomu;
Proposal of a Wireless Power Transfer Technique for Low-Power Multireceiver Applications IEEE TRANSACTIONS ON MAGNETICS,51(11):- 2015(Nov.) Author:Bu, Yinggang; Mizuno, Tsutomu; Fujisawa, Hidetaka;
Proposal of a Wireless IEEE TRANSACTIONS ON MAGNETICS,51(11):8402904 2015(Nov.) Author:Bu, YG; Mizuno, T; Fujisawa, H
LLC resonance power transformers using magnetoplated wire INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS,47(3):719-727 2015 Author:Bu, Yinggang; Nishiyama, Masahiro; Yamamoto, Tatsuya; Mizuno, Tsutomu; Tsuchiya, Shigeaki;
体内ロボット用非接触給電における周波数と給電領域の検討 日本AEM学会誌,23(1):144-150 2015 Author:水間 淳一郎; 後藤 徳仁; 卜 穎剛; 水野 勉; Abstract:Research on the robot inside the body equipped with various features, such as therapeutic function and self-propelled capability within the capsule endoscope is performed. Research on Wireless Power Transfer for robot inside the body to act sufficient in the body is performed, because internal battery has a limit of the capacity. It is necessary to reduce an electromagnetic field because electromagnetic field is generated from a Wireless Power Transfer. Power transmission in the Wireless Power Transfer depends largely on the quality factor of the coil and the transmission frequency. In this paper, it is shown that it is possible transmission power of 30 mW in the range of 300 mm × 300 mm × 180 mm, while reducing an electromagnetic field in the frequency 700 kHz. Keywords:wireless power transfer; magnetic resonant coupling; robot inside body; capsule endoscopy; magnetic field; electric field; wireless power transfer; magnetic resonant coupling; robot inside body; capsule endoscopy; magnetic field; electric field;
自励式発振回路を有する渦電流形変位センサの発振電圧特性 日本AEM学会誌,23(3):636-641 2015 Author:下島 芳史; 渡辺 隆志; 大村 洸平; 卜 穎剛; 水野 勉; 榎木 茂実; 品川 宏樹; Abstract: Eddy-current displacement sensors (EC displacement sensor) are used in a variety of industries, such as detection of shaft vibration for power generation turbine. An EC displacement sensor is composed of a coil, a coaxial cable and impedance / output voltage (Z/V) converter. Z/V converter composed of Colpitts oscillation circuit and rectifier circuit. In addition, impedance of EC displacement sensor probe is used for a part of Colpitts oscillation circuit. If output and oscillation voltage of a self-oscillation circuit and impedance of EC displacement sensor probe are calculated, design of EC displacement sensor of a self-excitation circuit becomes facilitated. In this paper, impedance of the EC displacement sensor probe by theory of Dodd was calculated. Furthermore, oscillation voltage was calculated by simulation software. Then, measured and calculated values were consistent. As a result, design of circuits of EC displacement sensor can become easy. Keywords:eddy-current displacement sensor; self-oscillation circuit; impedance; oscillation voltage; displacement; circuit design; eddy-current displacement sensor; self-oscillation circuit; impedance; oscillation voltage; displacement; circuit design;
加速度および推力特性に着目した可動磁石形リニア直流モータの検討 日本AEM学会誌,23(4):705-710 2015 Author:井上 要; 卜 穎剛; 水野 勉; 丸山 利喜; 寺島 智樹; Abstract: Linear DC motors (LDM), used in office automation equipments (OA) such as line printers and image scanners, are required to be with high acceleration and fast-response. Under the condition of limited power supply capacity and an outside dimension, the structure of LDM to make the acceleration rise most quickly is investigated by using finite element method. The target of acceleration, direct current and response time of acceleration are 490 m/s2, below10 A and 0.15 ms. As a result, maximum acceleration is 516 m/s2 and response time of acceleration is 0.125 ms, so the target is achieved. Keywords:linear DC motor; voltage source capacity; acceleration; electrical time constant; fast-response; finite element method; linear DC motor; voltage source capacity; acceleration; electrical time constant; fast-response; finite element method;
体内ロボット用非接触給電における周波数と給電領域の検討 日本AEM学会誌,23(1):144-150 2015 Author:水間 淳一郎; 後藤 徳仁; 卜 穎剛; 水野 勉; Abstract:Research on the robot inside the body equipped with various features, such as therapeutic function and self-propelled capability within the capsule endoscope is performed. Research on Wireless Power Transfer for robot inside the body to act sufficient in the body is performed, because internal battery has a limit of the capacity. It is necessary to reduce an electromagnetic field because electromagnetic field is generated from a Wireless Power Transfer. Power transmission in the Wireless Power Transfer depends largely on the quality factor of the coil and the transmission frequency. In this paper, it is shown that it is possible transmission power of 30 mW in the range of 300 mm × 300 mm × 180 mm, while reducing an electromagnetic field in the frequency 700 kHz. Keywords:wireless power transfer; magnetic resonant coupling; robot inside body; capsule endoscopy; magnetic field; electric field; wireless power transfer; magnetic resonant coupling; robot inside body; capsule endoscopy; magnetic field; electric field;
LLC resonance power transformers using magnetoplated wire INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS,47(3):719-727 2015 Author:Bu, Yinggang; Nishiyama, Masahiro; Yamamoto, Tatsuya; Mizuno, Tsutomu; Tsuchiya, Shigeaki;
体内ロボット用ワイヤレスエネルギー伝送 (ワイヤレスエネルギー伝送技術 : 磁気工学の役割とバイオ医療応用) 社団法人日本磁気学会研究会資料 = Bulletin of Topical Symposium of the Magnetics Society of Japan,199:9-14 2014(Dec. 08) Author:水野 勉; 卜 穎剛; 水間 淳一郎;
A Novel High-Speed Electromagnetic Oscillatory Actuator With a Dual Mover for Optical Scanner Applications IEEE Transactions on,50(11):8203504 2014(Dec. 02) Author:Yinggang Bu, Yoshida, S. ; Oyaizu, K. ; Kinjo, H. ; Inoue, K. ; Nitta, A. ; Mizuno, T. ; Duan, Z.
Examination of Wireless Power Transfer Combined With the Utilization of Distance Detection IEEE TRANSACTIONS ON MAGNETICS,50(11):4005304 2014(Nov.) Author:Bu, YG; Nishiyama, M; Ueda, T; Tashima, Y; Mizuno, T
A Novel High-Speed Electromagnetic Oscillatory Actuator With a Dual Mover for Optical Scanner Applications IEEE TRANSACTIONS ON MAGNETICS,50(11):- 2014(Nov.) Author:Bu, Yinggang; Yoshida, Shintaro; Oyaizu, Kazuaki; Kinjo, Hideyuki; Inoue, Kaname; Nitta, Akihiro; Mizuno, Tsutomu; Duan, Zhihui;
Examination of Wireless Power Transfer Combined With the Utilization of Distance Detection IEEE TRANSACTIONS ON MAGNETICS,50(11):- 2014(Nov.) Author:Bu, Yinggang; Nishiyama, Masahiro; Ueda, Takuto; Tashima, Yoshimi; Mizuno, Tsutomu;
Magnetic spring characteristic of an oscillatory actuator with silicone rubber torsion springs for optical scanner applications INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS,Vol.46(No.3):pp.463-470 2014(Sep. 29) Author:Yinggang Bu, Hideyuki Kinjo, Kazuaki Oyaizu, Kaname Inoue, Tsutom Mizuno and Zhihui Duan
加速度特性に着目した可動コイル形リニア直流モータの検討 日本AEM学会誌,22(2):214-219 2014 Author:卜 穎剛; 井上 要; 小柳津 一晃; 金城 秀幸; 新田 晃弘; 吉田 慎太郎; 水野 勉; 丸山 利喜; 寺島 智樹; Abstract: Linear DC Motors (LDM), used in office automation equipments (OA) such as line printers and image scanners, are required to be with high acceleration and fast-response. Under the condition of limited power supply capacity and an outside dimension, we investigate the structure of LDM to make the acceleration rise most quickly by using finite element method. In this paper, we examine the single-supported and double-supported LDMs. Target of acceleration, direct current and response time of acceleration are 490 m/s2, below10 A and 0.15 ms. As a result, double-supported LDMs maximum acceleration is 655 m/s2 and response time of acceleration is 0.36 ms, so the target is not achieved, but comparing to single-supported LDM, response time of acceleration is less than 0.59 ms. Keywords:linear DC motor; voltage source capacity; acceleration; electrical time constant; fast-response; Finite Element Method; linear DC motor; voltage source capacity; acceleration; electrical time constant; fast-response; Finite Element Method;
Magnetic spring characteristic of an oscillatory actuator with silicone rubber torsion springs for optical scanner applications INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS,46(3):463-470 2014 Author:Bu, Yinggang; Kinjo, Hideyuki; Oyaizu, Kazuaki; Inoue, Kaname; Mizuno, Tsutom; Duan, Zhihui;
研究グループ紹介：信州大学 工学部 電気電子工学科 水野・卜研究室 電気学会論文誌Ｄ（産業応用部門誌）,133(12):NL12_13-NL12_13 2013 Author:水野 勉; 卜 穎剛; Abstract:Our research focuses on the liner motor, oscillatory actuator, eddy-current displacement sensor, LLC converter, wireless power transfer and energy harvesting.
Examination of vibration control of linear oscillatory actuator ELECTRICAL ENGINEERING IN JAPAN,178(4):55-62 2012(Mar.) Author:Bu Yinggang; Aotsuka, Ryota; Mizuno, Tsutomu;
リニア振動アクチュエータの振動制御の検討 電気学会論文誌. D, 産業応用部門誌 = The transactions of the Institute of Electrical Engineers of Japan. D, A publication of Industry Applications Society,129(2):184-190 2009(Feb. 01) Author:卜 穎剛; 青塚 亮太; 水野 勉; Abstract:Linear oscillatory actuators (LOAs) are widely used in linear-motor shavers, electric toothbrushes and mobile phone vibrators as high-speed oscillatory driving devices. The maximum amplitude of the mover is obtained at a resonance frequency that is determined from the spring constant and the mass of the mover. However there is a problem with these actuators: the amplitude decreases sharply when the driving frequency differs from the resonance frequency in a mechanical vibration system with small damping. In this paper we propose a control of resonance frequency in which the thrust, which shows the characteristics of a spring, is generated based on the displacement of the mover and damping factor in which the thrust, which shows the characteristics of a damping, is generated based on the velocity of the mover. The proposed method ensures that the resonance frequency always corresponds to the driving frequency and that rapid changes in the amplitude are avoided. Keywords:リニア振動アクチュエータ; 振動制御; 共振周波数; 減衰係数;
Proposal of highly effective driving method for linear oscillatory actuator Journal of Optoelectronics and Advanced Materials,10(5):1257-1261 2008(May. 01) Author:Y. Bu, M. Karasawa, Y. Isono, T. Mizuno
Proposal of highly effective driving method for linear oscillatory actuator JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS,10(5):1257-1261 2008(May.) Author:Bu, Yinggang; Karasawa, Makoto; Isono, Yusuke; Mizuno, Tsutomu;
観測器を用いたリニア振動アクチュエータの動推力測定法 電気学会論文誌. D, 産業応用部門誌 = The transactions of the Institute of Electrical Engineers of Japan. D, A publication of Industry Applications Society,127(9):993-999 2007(Sep. 01) Author:水野 勉; 大久保 光範; 卜 穎剛; 柄澤 誠; 中川 洋; 村口 洋介; Abstract:The kinetic thrust of a linear motor (LM) is measured with a load cell connected between the LM and a load motor. The case of linear oscillatory actuator (LOA), the kinetic thrust obtained using this method is not accurate, because the inertial force affects the load cell under the high-speed reciprocating motion of the LOA. In this paper, we propose a novel method of measuring kinetic thrust using an observer-inputted output of the load cell and the displacement of the load motor, and examine the proposed method. The estimated kinetic thrust Fe obtained by the observer agrees with the kinetic thrust obtained by simulation. In the measurement, the ratio of Fe to √2KfI1 (Kf is the thrust constant of the LOA, I1 is the exciting current) is 0.93 at frequency f = 37.3Hz. Fe decreases with increasing frequency because of the eddy currents in the yokes of the LOA. Therefore, it is considered that the proposed method is appropriate, as ascertained by simulation and measurement. In addition, it is necessary for the leaf spring of the LOA to be light and to have a fixed spring constant for the high-precision measurement of kinetic thrust. Keywords:リニアモータ; リニア振動アクチュエータ; 動推力; 測定法; ロードセル; 変位; 観測器;
リニア振動アクチュエータの効率測定法の検証(<特集>第15回MAGDAコンファレンス) 日本AEM学会誌,15(2):132-137 2007(Jun. 10) Author:水野 勉; 大久保 光範; 卜 穎剛; 柄澤 誠; 磯野 祐輔; 中川 洋; 村口 洋介; Abstract:We already proposed the method for efficiency measurement of the linear oscillatory actuator (LOA) with a load cell between a LOA and a load motor. However, output of load cell is not an accurate value, because the inertial force affects the load cell under high-speed reciprocating motion of the LOA. In this paper, we verify that the proposal method for efficiency measurement is appropriate by deducing equations of motion. Moreover the proposal method is verified by the both simulation and measurement. Output of load cell becomes larger than the accurate thrust in both simulation and measurement. However, the accurate mechanical power is equal with the proposal one. Therefore, it becomes clearness that the proposal method for efficiency measurement is appropriate. Keywords:linear motor; linear oscillatory actuator; efficiency; mechanical power; method for efficiency measurement; load cell; observer;
学会発表 Loss Reduction of Transformer for LLC Resonant Converter Using a Magnetoplated Wire The 19th Interntional Conference on Electrical Machines and Systems(ICEMS2016) 2016(Nov. 15) Author:Tatsuya Yamamoto, Yinggang Bu, Tsutomu Mizuno, Yutaka Yamaguchi and Tomoyoshi Kano
High-Lift-Off of Rail Displacement Sensor Using Triangle Spiral Coil International Conference on Sensing Technology 2016 2016(Nov. 11) Author:Daiki Mori, Yinggang Bu, Tsutomu Mizuno, Takafumi Asahi, Shigemi Enoki
Improvements in the transmission efficiency in an electric vehicles wireless power transfer system using litz magnetoplated wire The 13th IEEE Vehicle Power and Propulsion Conference(VPPC)2016 2016(Oct. 17) Author:Yinggang Bu, Wenhua Wang, Takahiro Kasai and Tsutomu Mizuno
A study of an electromagnetic energy harvester device with negative magnetic spring characteristics Asia-Pacific Symposium on Applied Electromagnetics and Mechanics (APSAEM)2014 , :pp.164-165 2014(Jul. 23) Author:Yinggang BU, Kaname INOUE and Tsutomu MIZUNO
Leakage Flux Recovery Coil for Energy Harvesting Using Magnetoplated Wire Asia-Pacific Symposium on Applied Electromagnetics and Mechanics (APSAEM)2014 , :pp.106-107 2014(Jul. 23) Author:Tatsuya YAMAMOTO, Yinggang BU and Tsutomu MIZUNO
Examination of Oscillation Frequency to Reduce Change in the Sensitivity of an Eddy-current Displacement Sensor due to Coaxial Cable Torsion Asia-Pacific Symposium on Applied Electromagnetics and Mechanics (APSAEM)2014 , :pp.25-26 2014(Jul. 22) Author:Yoshifumi SHIMOJIMA, Kohei OMURA, Yinggang BU
Characteristics of a Fix-end Torsion Spring Oscillatory Actuator with Molded Silicone Rubber The 9th International Symposium on Linear Drives and Industry Applications , :127 2013(Jul. 07) Author:Yinggang Bu, Hideyuki Kinjo, Kazuaki Oyaizu, Kaname Inoue, Tsutom Mizuno, Zhihui Duan
Basic design of linear oscillatory actuator for two-dimensional optical scanner International Conferenceon Electrical Machines and System , :1-6 2009(Nov. 15) Author:Mizuno, T. Teramae, Y. Bu Ying Gang, Aotsuka, R. Hattori, Y.
Consideration on Linear Oscillatory Actuator for Optical Scanner The 7th International Symposium on Linear Drives for Industry Applications , :156-157 2009(Sep. 21) Author:T. Mizuno, Y. Hattori, Y. Bu, R. Aotsuka, Y. Teramae
Optimum design of linear oscillatory actuator for mobile phone The 5th InternationalConference on Mobile Technology , :30 2008(Sep. 10) Author:T. Mizuno, Y. Hattori, Y. Bu, R. Aotsuka
Kinetic thrust characteristics of linear oscillatory actuator for active vibration control 16th International Conference on Electrical Machines and Systems , :7-12 2006(Nov. 20) Author:Y. Bu, M. Ohkubo, M. Karasawa, and T. Mizuno
Static thrust analysis of a moving magnet linear oscillatory actuator for vibration cancel system Linear Drives for Industry Applications (LDIA) 2005 , :282-285 2005(Sep. 25) Author:T. Mizuno, Y. Bu, M. Ohkubo, F. Tsuchiya, H. Yamada
研究者総覧
