Research activity information

• 電気学会論文発表賞

• Role of Layers and Neurons in Deep Learning With the Rectified Linear Unit

  Akira Takekawa, Masayuki Kajiura, Hiroya Fukuda

  Last, Springer Science and Business Media LLC, Oct. 2021, Cureus Journal of Medical Science, 13(10) (10), English

  [Refereed]

  Scientific journal


• Nonlinear Discrimination Using Multi-Layered Hyperplanes

  Takekawa A, Haraoka G, Nagai S, Fukuda H

  Last, Jan. 2021, IEICE TRANSACTIONS ON COMMUNICATIONS, J104-A(1) (1), 1 - 2, Japanese

  [Refereed]

  Scientific journal


• 超平面を用いたDeep Learning情報処理過程の解析とシグナルフロー線図による表現

  武川 公, 原岡 剛, 長井 聡, 福田 博也

  Last, Sep. 2020, 神戸大学大学院人間発達環境学研究科研究紀要, 14(1) (1), 139 - 141, Japanese

  Research institution

  Link to Kobe Univ. Repository (Kernel)


• Detection of Swallowing Movement Using Pressure Sensor

  TAKAMATSU, FUKUDA

  Apr. 2019, 電気学会論文誌, 139-E(4) (4), 85 - 86, Japanese

  [Refereed]

  Scientific journal


• Measurement of bio-information and prevention of fall from bed using game machine

  Satoshi Nagai, Hiroya Fukuda

  Institute of Electrical Engineers of Japan, 2018, IEEJ Transactions on Electronics, Information and Systems, 138(5) (5), 635 - 636, Japanese

  [Refereed]

  Scientific journal


• Estimation of center of pressure trajectory using an insole-type force sensor

  Koki Hayama, Hiroya Fukuda

  Japan Soc. of Med. Electronics and Biol. Engineering, 2016, Transactions of Japanese Society for Medical and Biological Engineering, 54(1) (1), 15 - 21, Japanese

  [Refereed]

  Scientific journal


• Estimation of the position on the bed using a pressure sensor

  NAGAI SATOSHI, FUKUDA HIROYA

  In this study, the authors propose a method to estimate the position on an air bed by internal pressure change. The pressure of a bed varies by the position because the contact area between body and bed changes. The experimental system uses a commercially available air bed and a gauge pressure sensor. The figure shows measured pressure change according to the position. From this result, prone or supine position and lateral position are easily discriminated from the pressure difference. Furthermore, sitting position and fall from a bed were clearly detected. But prone or supine position and left or right lateral position can't be discriminated in principle.

  Japanese Society for Medical and Biological Engineering, 2015, Transactions of Japanese Society for Medical and Biological Engineering, 53, S177_01 - S177_01, Japanese


• Performance evaluation of ground reaction force estimating insole in different paces of walking and different types of footwear

  Koki Hayama, Hiroya Fukuda

  2014, Transactions of Japanese Society for Medical and Biological Engineering, 52(2) (2), 108 - 112, Japanese

  [Refereed]

  Scientific journal


• Performance Evaluation of Thin-Film Force Sensor and Its Application to Plantar Pressure Measurement

  MITSUMORI NAKAZONO, HIROYA FUKUDA

  In recent years, wearable technology has been advanced for the purpose of physiological monitoring system during daily life. However, conventional compact and lightweight sensors are expensive to use in the field of wearable monitoring, such as walking rehabilitation. This paper presents compact, lightweight, and inexpensive thin-film force sensor for wearable monitoring system. The thin-film force sensor requires a “puck” that is placed on the sensing area to ensure that the entire load path goes through this area. However, heterogeneous load distribution may appear on the sensor depending on the material of the puck. The difference between the outputs of the sensor using aluminum puck upon the application of surface and point forces was less than that of the sensor using PET puck. This result suggested that rigid materials are suitable for puck, thus we utilized thin-film force sensor with an aluminum-puck for planter pressure measurement to estimate ground reaction force. The performance of the thin-film force sensor was confirmed equivalent to that of the force plate. It is expected that a simple and inexpensive system to evaluate daily movement behavior has been developed.

  Japanese Society for Medical and Biological Engineering, Feb. 2011, 生体医工学, 4(1) (1), 245 - 249, Japanese

  [Refereed]

  Scientific journal


• 高磁場MRI用並列多重化スイッチング電源の電流リプル低減法に関する研究

  峠岡 辰幸, 福田 博也, 米森 秀登, 八坂 保能

  The Japan Institute of Power Electronics, 2005, パワーエレクトロニクス学会誌, 31, 176 - 176, Japanese


• Design Method of Digital Optimal Control Scheme and Multiple Paralleled Bridge Type Current Amplifier for Generating Gradient Magnetic Fields in MRI Systems

  WATANABE, TAKANO, FUKUDA, HIRAKI, NAKAOKA

  This paper deals with a digital control scheme of multiple paralleled high frequency switching current amplifier with four-quadrant chopper for generating gradient magnetic fields in MRI (Magnetic Resonance Imaging) systems. In order to track high precise current pattern in Gradient Coils (GC), the proposal current amplifier cancels the switching current ripples in GC with each other and designed optimum switching gate pulse patterns without influences of the large filter current ripple amplitude. The optimal control implementation and the linear control theory in GC current amplifiers have affinity to each other with excellent characteristics. The digital control system can be realized easily through the digital control implementation, DSPs or microprocessors. Multiple-parallel operational microprocessors realize two or higher paralleled GC current pattern tracking amplifier with optimal control design and excellent results are given for improving the image quality of MRI systems.

  The Institute of Electrical Engineers of Japan, Aug. 2003, 電気学会論文誌, 123-D・8, 894-902(8) (8), 894 - 902, Japanese

  [Refereed]

  Scientific journal


• Two-Paralleled Bridge Type High Frequency PWM Chopper with Multi-Loop Current Feedback Tracking Scheme for Gradient Magnetic Field Controller

  WATANABE, TAKANO, FUKUDA, HIRAKI, NAKAOKA

  This paper deals the digital optimal current control scheme to improve MRI (Magnetic Resonant Imaging) Gradient-Magnetic Coil (GC) current control implementation. The GC current needs high precision control specifications so as to take clear images with MRI. The novel MRI-GC current control amplifier has the high-frequency PWM chopper circuit with a multi-parallel input structure. The GC current control circuit can prevent the current ripple amplitude and realize high precision GC current controls, but the control system is hard to design because the GC current control circuit has the multi-input and multi-output structure and required high precision control abilities. Therefore, the digital optimal control scheme has tried to apply for the GC current control. The optimal controller is skillful at the design of multi-input and multi-output systems. The novel controller will actualize the high precision GC current controllability because Error System newly includes the GC current error parameter so as to decide the multi-inputs. In this paper, we discuss the novel controller with computer simulations that it can expect the high precision GC current control to improve the image quality of MRI systems.

  The Institute of Electrical Engineers of Japan, Mar. 2003, 電気学会論文誌, 123-D・3, 188-195(3) (3), 188 - 195, Japanese

  [Refereed]

  Scientific journal


• Parallel Operation of Full-Bridge Power Amplifiers and Its Digital Optimal Control Scheme for Ultrahigh-Speed Scanning MRI

  Hiroya Fukuda, Shuji Watanabe, Hiroshi Takano, Mutsuo Nakaoka

  2003, IEEJ Transactions on Electronics, Information and Systems, 123(11) (11), 1944 - 1950, English

  [Refereed]

  Scientific journal


• Fundamental Study on Piezoelectric Film Sensor for the Detection of Decubital Movement

  FUKUDA, KUNITOSHI

  Kobe University, Sep. 2002, 神戸大学発達科学部研究紀要, ,(1) (1), 193 - 199, Japanese

  [Refereed]

  Scientific journal


• Parallel operation of four-switch full-bridge power amplifiers and a unique digital control scheme for advanced magnetic resonance imaging

  H Fukuda, H Takano, T Hatakeyama, M Nakaoka

  Jul. 2000, ELECTRICAL ENGINEERING IN JAPAN, 132(1) (1), 64 - 72, English

  [Refereed]

  Scientific journal


• Parallel Operation of 4-Switch Full-Bridge Power Amplifiers and A Unique Digital Control Scheme for Advanced Magnetic Resonance Imaging

  FUKUDA, TAKANO, HATAKEYAMA, NAKAOKA

  This paper presents a Multiple Bridges Power Conversion Circuit (MBPCC) for the switchmode gradient power amplifiers in the magnetic resonance imaging (MRI) systems. The MBPCC is connected in parallel with the conventional 4-switch full-bridge circuits using insulated gate bipolar transistors (IGBTs) at their inputs/outputs in order to realize further high-power density. A unique digital control scheme for MBPCC, which requires minimized the ripple and improved the rise/fall response characteristics of the current in the gradient coil, is proposed and described here. The MBPCC as overall system is perfectly suited to the gradient power amplifier for advanced MRI because the output current waves are not restricted to ramped-squarewaves and can assume any arbitrary forms. It is expected that the proposed techniques will highly enlarge the diagnostic target and improve the image quality of MRI.

  The Japan Institute of Power Electronics, Jul. 1998, 電気学会論文誌, 118-C・7/8, 1034-1041(1) (1), 56 - 63, Japanese

  [Refereed]

  Scientific journal


• DSP-Based Precision Current Tracking Control System for Two-Paralleled PWM Amplifiers in MRI Systems

  WATANABE, BOYAGODA, FUKUDA, TAKANO, NAKAOKA

  Apr. 1998, Proceedings of PCIM (International Conference and Exhibition on Power Conversion and Intelligent Motion), , 301-306, English

  [Refereed]

  International conference proceedings


• DSP-based high precision current tracking control of Gradient Coil in two-paralleled PWM amplifiers for MRI systems

  S Watanabe, P Boyagoda, H Fukuda, H Takano, M Nakaoka

  1998, PESC 98 RECORD - 29TH ANNUAL IEEE POWER ELECTRONICS SPECIALISTS CONFERENCE, VOLS 1 AND 2, , 916-921, 916 - 921, English

  [Refereed]

  International conference proceedings


• Application of High-Frequency Switching Power Supply to Medical Imaging Machines and Its Digital Control Scheme

  FUKUDA

  Mar. 1997, 博士論文（神戸大学）, , 全71p, Japanese

  [Refereed]

  Scientific journal


• Application of Repetitive Learning Control Scheme to Phase-shifted PWM Resonant DC-DC Converter

  FUKUDA, TAKANO, HATAKEYAMA, NAKAOKA

  Nov. 1996, 電気学会論文誌, 116-C・11, 1267-1275, Japanese

  [Refereed]

  Scientific journal


• A Unique Digital Control Scheme of Multiple Bridges Power Conversion Circuit for Advanced Magnetic Resonance Imaging

  FUKUDA, TAKANO, HATAKEYAMA, NAKAOKA

  Sep. 1996, Proceedings of IEE-PEVD (International Conference on Power Electronics and Variable-Speed Drives), , 366-371, 366 - 371, English

  [Refereed]

  International conference proceedings


• High-Frequency ZVS PWM Power Amplifier for Magnetic-Field Current Tracking Control Scheme and Its Design Considerations

  FUKUDA, NAKAOKA

  Feb. 1995, Proceedings of IEEE-PEDS (International Conference on Power Electronics and Drive Systems), , 238-245, 238 - 245, English

  [Refereed]

  International conference proceedings


• State-Vector Feedback Control-Based Servo Power Amplifier for High-Precision Magnetic-Field Current Tracking

  FUKUDA, ARAI, NAKAOKA

  Kobe University, Nov. 1994, Memoirs of The Faculty of Engineering, Kobe University, 41, 35-47, 35 - 47, English

  [Refereed]

  International conference proceedings


• STATE-VECTOR FEEDBACK 100KHZ CARRIER PWM POWER AMPLIFIER FOR HIGH-PRECISION MAGNETIC-FIELD CURRENT PATTERN TRACKING

  H FUKUDA, M NAKAOKA

  1994, FIFTH INTERNATIONAL CONFERENCE ON POWER ELECTRONICS AND VARIABLE-SPEED DRIVES, (399) (399), 211 - 216, English

  [Refereed]

  International conference proceedings


• ADVANCED 3-PHASE ZVS-PWM ACTIVE POWER RECTIFIER WITH NEW RESONANT DC LINK AND ITS DIGITAL CONTROL SCHEME

  H YONEMORI, H FUKUDA, M NAKAOKA

  1994, FIFTH INTERNATIONAL CONFERENCE ON POWER ELECTRONICS AND VARIABLE-SPEED DRIVES, (399) (399), 608 - 613, English

  [Refereed]

  International conference proceedings


• STATE-FEEDBACK CONTROL-BASED 100KHZ CARRIER SWITCHED-MODE PWM POWER CONVERSION AMPLIFIER FOR MAGNETIC-GRADIENT FIELD CURRENT-TRACKING CONTROL

  H FUKUDA, M NAKAOKA

  1993, PCIM '93 EUROPE - OFFICIAL PROCEEDINGS OF THE TWENTYSIXTH INTERNATIONAL POWER CONVERSION CONFERENCE, , 487-496, 487 - 496, English

  [Refereed]

  International conference proceedings


• STATE-VECTOR FEEDBACK-CONTROL BASED HIGH-FREQUENCY CARRIER PWM POWER CONVERSION AMPLIFIER WITH HIGH-PRECISION MAGNETIC-FIELD CURRENT-TRACKING SCHEME

  H FUKUDA, M NAKAOKA

  1993, FIFTH EUROPEAN CONFERENCE ON POWER ELECTRONICS AND APPLICATIONS, VOL 3, 3, 11-16(377) (377), 11 - 16, English

  [Refereed]

  International conference proceedings


• SOFT-SWITCHED PWM DC-DC HIGH-POWER CONVERTER WITH QUASI-RESONANT-POLES AND PARASITIC REACTIVE RESONANT COMPONENTS OF HIGH-VOLTAGE TRANSFORMER

  YJ KIM, H FUKUDA, M MICHIHIRA, M NAKAOKA

  1993, OFFICIAL PROCEEDINGS OF THE TWENTY-SEVENTH INTERNATIONAL POWER CONVERSION CONFERENCE - PCIM '93, , 154-165, 154 - 165, English

  [Refereed]

  International conference proceedings


• STATE-VECTOR FEEDBACK CONTROL-BASED 100KHZ CARRIER PWM POWER CONDITIONING AMPLIFIER AND ITS HIGH-PRECISION CURRENT-TRACKING SCHEME

  H FUKUDA, M NAKAOKA

  1993, PROCEEDINGS OF THE IECON 93 - INTERNATIONAL CONFERENCE ON INDUSTRIAL ELECTRONICS, CONTROL, AND INSTRUMENTATION, VOLS 1-3, 2, 1105-1110, 1105 - 1110, English

  [Refereed]

  International conference proceedings


• STATE-FEEDBACK CONTROL-BASED 100KHZ CARRIER SWITCHED-MODE PWM POWER CONVERSION AMPLIFIER FOR MAGNETIC-GRADIENT FIELD CURRENT-TRACKING CONTROL

  H FUKUDA, M NAKAOKA

  1993, PCIM '93 EUROPE - OFFICIAL PROCEEDINGS OF THE TWENTYSIXTH INTERNATIONAL POWER CONVERSION CONFERENCE, , 211-216, 487 - 496, English

  [Refereed]

  International conference proceedings


• Super Low Speed Control for LIM

  OGINO, ABE, OHISHI, NAKAOKA, FUKUDA, TAKAKADO, NAKANO, MURAKAMI

  Apr. 1992, Proceedings of IEEE-ISPE (International Symposium on Power Electronics), , 148-152, English

  [Refereed]

  International conference proceedings

• Development of ground reaction force measurement system using film force sensors and wireless communication module

  Koki Hayama, Hiroya Fukuda

  Japan Soc. of Med. Electronics and Biol. Engineering, 17 Aug. 2014, Transactions of Japanese Society for Medical and Biological Engineering, 52, 31, Japanese

  Report scientific journal


• Parallel Operation of 4-Switch Full-Bridge Power Amplifiers and A Unique Digital Control Scheme for Advanced Magnetic Resonance Imaging

  FUKUDA Hiroya, TAKANO Hiroshi, HATAKEYAMA Takanobu, NAKAOKA Mutsuo

  電気学会, 01 Jul. 1998, The Transactions of the Institute of Electrical Engineers of Japan. C, 118(7) (7), 1034 - 1041, Japanese


• GRADIENT MAGNETIC FIELD CURRENT TRACKING-BASED SWITCHING POWER SUPPLY SYSTEM WITH DIGITAL OPTIMAL REGULATING SCHEME FOR MEDICAL USE MRI

  Watanabe Shuji, Takano Hiroshi, Fukuda Hiroya, Nakaoka Mutsuo

  This paper presents a New Power Conversion Circuit with digital control scheme for the switch-mode gradient power amplifiers in the magnetic resonance imaging (MRI) systems. T case a analog control scheme is introduced for this systemcontroller, a good output current quality to follow up any arbitrary input current waveforms. But the switching devices (ICBTs, Static Induction Transistors) have a limit for switching speed and current capacity. Therefore it is hard to achieve good current quality power amplifiers. A unique dgital control scheme for The Multiple Brides Power Conversion Circuit (MBPCC), which requires minimiz the ripple and improved rise/fall response characteristics of the current in the Gradient Coils (GCs), is proposed and described here. It is expected that the proposed techniques will highly enlarge the diagnostic target and improve the image quality of MRI.

  The Institute of Electronics, Information and Communication Engineers, 1997, IEICE technical report. Power engineering in electronics and communications, 96(522) (522), PE96 - 67, Japanese

• キーワード 人間と発達［増補改訂版］ V. 生活とテクノロジー

  丸谷 宣子, 井上 真理, 青木 務, 平山 洋介, 市橋 秀樹, 浜口 八朗, 高橋 正, 長坂 耕作, 矢野 澄雄, 福田 博也, 城 仁士, 阪本 雄二, 高橋 譲嗣, 高橋 真, 白倉 暉弘, 稲葉 太一, 白杉 直子, 近江戸 伸子, 宮田 任寿, 澤 宗則, 二宮 厚美

  Joint work, 大学教育出版, Apr. 2007, Japanese

  Textbook

• ウェアラブルな柔らかさセンサに関する研究

  上田 将平, 福田 博也

  電子情報通信学会総合大会 2025 年大会, Mar. 2025, Japanese

  Oral presentation


• 食事介助における圧力センサを用いた嚥下動作検出システムの構築

  福田博也

  令和7年電気学会全国大会, Mar. 2025, Japanese

  Oral presentation


• 装着型爪ひずみセンサを利用した柔らかさの計測に関する検討

  上田 将平, 福田 博也

  令和6年電気学会全国大会, Mar. 2024

  Oral presentation


• 導電性編物を用いた上肢の関節角度計測用デバイスの製作

  原田 周典, 竝川 哲也, 福田 博也

  令和6年電気学会全国大会, Mar. 2024

  Oral presentation


• 導電性編物による前腕回内・回外動作の計測

  高柳 遼, 竝川 哲也, 福田 博也

  日本繊維機械学会 第76回年次大会, Jun. 2023

  Oral presentation


• 圧力センサを用いた嚥下動作の検出

  高松 優子, 白杉(片岡) 直子, 福田 博也

  日本調理科学会近畿支部第 45 回研究発表会, Dec. 2019, Japanese

  Oral presentation


• 無線通信を利用した気圧センサによる身体活動量の推定

  YOHEI KAMATA, HIROYA FUKUDA

  電子情報通信学会総合大会 2018 年大会, Mar. 2018, Japanese, 東京電機大学（東京都）, Domestic conference

  Poster presentation


• 荷重中心の計測による臥床者の体位検出

  SATOSHI NAGAI, YOHEI KAMATA, FUKUDA HIROYA

  平成 30 電気学会全国大会, Mar. 2018, Japanese, 九州大学（福岡市）, Domestic conference

  Oral presentation


• 圧力センサを用いた高齢者の嚥下動作の検出

  YUKO TAKAMATSU, YOHEI KAMATA, FUKUDA HIROYA

  平成 30 電気学会全国大会, Mar. 2018, Japanese, 九州大学（福岡市）, Domestic conference

  Oral presentation


• 気圧センサによる活動状態の推定

  YOHEI KAMATA, FUKUDA HIROYA

  平成 29 電気学会全国大会, Mar. 2017, Japanese, 富山大学（富山市）, Domestic conference

  Oral presentation


• インソール型フォースセンサによる床反力および足圧中心軌跡の推定

  FUKUDA HIROYA

  平成 29 電気学会全国大会, Mar. 2017, Japanese, 富山大学（富山市）, Domestic conference

  Oral presentation


• バランス Wii ボードによる生体情報の計測

  SATOSHI NAGAI, FUKUDA HIROYA

  平成 28 年電気学会 電子・情報・システム部門大会, Aug. 2016, Japanese, 神戸大学（神戸市）, Domestic conference

  Oral presentation


• 歪みゲージを用いた柔軟な一軸剪断力センサに関する検討

  MICHIHITO TERAMOTO, FUKUDA HIROYA

  生体医工学シンポジウム 2015, Sep. 2015, Japanese, 岡山国際交流センター（岡山市）, Domestic conference

  Oral presentation


• 圧力センサを用いた姿勢・行動判別法

  YOHEI KAMATA, FUKUDA HIROYA

  生体医工学シンポジウム 2015, Sep. 2015, Japanese, 岡山国際交流センター（岡山市）, Domestic conference

  Oral presentation


• インソール型フォースセンサによる足圧中心軌跡の推定

  KOKI HAYAMA, HIROYA FUKUDA

  生体医工学シンポジウム 2015, Sep. 2015, Japanese, 岡山国際交流センター（岡山市）, Domestic conference

  Oral presentation


• 気圧センサによるベッド上の姿勢変化推定

  SATOSHI NAGAI, FUKUDA HIROYA

  第 54 回日本生体医工学会大会, May 2015, Japanese, 名古屋国際会議場（名古屋市）, Domestic conference

  Oral presentation


• 気圧センサの荷重計測システムへの応用

  SATOSHI NAGAI, HIROYA FUKUDA

  生体医工学シンポジウム 2014, Sep. 2014, Japanese, 東京農工大学（小金井市）, Domestic conference

  Oral presentation


• 薄型フォースセンサと無線通信モジュールを用いた床反力計測システムの開発

  KOKI HAYAMA, FUKUDA HIROYA

  第 53 回日本生体医工学会大会, Jun. 2014, Japanese, 仙台国際センター（仙台市）, Domestic conference

  Oral presentation


• 加速度センサとプレゼンテーションソフトを用いた反応時間計測システムの構築

  MICHIHITO TERAMOTO, YASUMASA KISHI, FUKUDA HIROYA

  第 53 回日本生体医工学会大会, Jun. 2014, Japanese, 仙台国際センター（仙台市）, Domestic conference

  Oral presentation


• 動き出しにおける敏捷性評価のための反応時間計測システムの考案

  YASUMASA KISHI, HIROYA FUKUDA

  生体医工学シンポジウム 2013, Sep. 2013, Japanese, 九州大学（福岡市）, Domestic conference

  Oral presentation


• 異なる歩調および履物における床反力推定インソールの性能評価

  KOKI HAYAMA, HIROYA FUKUDA

  生体医工学シンポジウム 2013, Sep. 2013, Japanese, 九州大学（福岡市）, Domestic conference

  Oral presentation


• 環境温度の変化に対する植物の生体電位応答

  NAYSUKO TANAKA, HIROYA FUKUDA

  平成 25 電気学会全国大会, Mar. 2013, Japanese, 名古屋大学（名古屋市）, Domestic conference

  Oral presentation


• 温度変化に対する植物の生体電位応答と気孔動態

  NAYSUKO TANAKA, HIROYA FUKUDA

  電子情報通信学会総合大会 2013 年大会, Mar. 2013, Japanese, 岐阜大学（岐阜市）, Domestic conference

  Oral presentation


• 汎用ピエゾ抵抗フォースセンサを用いた簡易歩行計測システムの考案

  RYO IKEDA, HIROYA FUKUDA

  生体医工学シンポジウム 2012, Sep. 2012, Japanese, 大阪大学（豊中市）, Domestic conference

  Oral presentation


• 静止時における握り強さが動き出し反応時間に及ぼす影響

  YASUMASA KISHI, HIROYA FUKUDA

  生体医工学シンポジウム 2012, Sep. 2012, Japanese, 大阪大学（豊中市）, Domestic conference

  Oral presentation


• 温度刺激に対する植物の生体電位応答と気孔動態の観察

  NAYSUKO TANAKA, HIROYA FUKUDA

  日本生物環境工学会 2012 年大会, Sep. 2012, Japanese, 東京大学（東京都）, Domestic conference

  Oral presentation


• 歩行分析のための鉛直床反力と 3 軸加速度の無線計測システムの構築

  RYO IKEDA, HIDENORI WAKABAYASHI, HIROYA FUKUDA

  第 51 回日本生体医工学会大会, May 2012, Japanese, 福岡国際会議場（福岡市）, Domestic conference

  Oral presentation


• 靴内挿入型の荷重計測デバイスを用いた床反力の推定

  RYO IKEDA, HIROYA FUKUDA

  第 32 回バイオメカニズム学術講演会, Nov. 2011, Japanese, 大阪科学技術センター（大阪市）, Domestic conference

  Oral presentation


• 薄型フォースセンサを用いたウェアラブルな足底荷重計測デバイスの評価

  RYO IKEDA, HIROYA FUKUDA

  ジョイント・シンポジウム2011（スポーツ工学とヒューマン・ダイナミクス）, Oct. 2011, Japanese, 京都大学（京都市）, Domestic conference

  Oral presentation


• 薄型フォースセンサを用いた歩行時の鉛直床反力の推定

  RYO IKEDA, HIROYA FUKUDA

  生体医工学シンポジウム 2011, Sep. 2011, Japanese, ビッグハット（長野市）, Domestic conference

  Oral presentation


• 薄型フォースセンサを用いた足底荷重計測インソールの製作

  MITSUMORI NAKAZONO, HIROYA FUKUDA

  第 31 回バイオメカニズム学術講演会, Nov. 2010, Japanese, 静岡, Domestic conference

  Oral presentation


• Performance Evaluation of Thin-Film Force Sensor and Its Application to Plantar Pressure Measurement

  MITSUMORI NAKAZONO, HIROYA FUKUDA

  生体医工学シンポジウム 2010, Sep. 2010, Japanese, 北海道, Domestic conference

  Oral presentation


• 足袋を利用した足底荷重計測インソールの製作

  中園 貢盛, 篠原 康男, 福田 博也, 矢野 澄雄

  ジョイント・シンポジウム2009（スポーツ工学とヒューマン・ダイナミクス）, Dec. 2009, Japanese, 福岡工業大学（福岡市）, Domestic conference

  Oral presentation


• 高磁場ＭＲＩ用並列多重化スイッチング電源の電流リプル低減法に関する研究

  峠岡 辰幸, 福田 博也, 米森 秀登, 八坂 保能

  パワーエレクトロニクス学会161回研究会, Dec. 2005, Japanese, パワーエレクトロニクス学会, 神戸市立工業高等専門学校, Domestic conference

  Poster presentation


• Multiple Paralleled 3-Level Inverter Using Digital Preview Optimal Control for Current Ripple Reduction

  KAWAKAMI, FUKUDA, YONEMORI, YASAKA

  半導体電力変換研究会, Jan. 2005, Japanese, 電気学会, 大阪, 日本, Domestic conference

  Oral presentation


• Switching Power Supply in Ultrahigh-Speed Scanning MRI for Current Ripple Reduction

  FUKUCHI, FUKUDA, YONEMORI, YASAKA

  パワーエレクトロニクス学会創設記念大会, Nov. 2004, Japanese, パワーエレクトロニクス学会, 奈良, 日本, Domestic conference

  Poster presentation


• Method of Improving the Transitional Response Characteristics for Gradient Magnetic Field Current in MRI

  WATANABE, FUKUDA, TAKANO, NAKAOKA

  平成 15 年電気学会産業応用部門全国大会, Aug. 2003, Japanese, 電気学会, 八王子, 日本, Domestic conference

  Oral presentation


• Characteristics of the Low-Pass Filters for the Multi-paralleled Bridge Type High Frequency PWM Current Amplifier in the MRI Gradient Magnetic Field Current Controller

  WATANABE, FUKUDA, TAKANO, NAKAOKA

  平成 15 年電気学会全国大会, Mar. 2003, Japanese, 電気学会, 電子情報通信学会, 照明学会, 映像情報メディア学会, 情報処理学会, 仙台, 日本, Domestic conference

  Oral presentation


• Multiple Paralleled Bridges for High-Power Magnetic-Field Current Control and Its Digital Optimal Control

  WATANABE, FUKUDA, TAKANO, NAKAOKA

  平成 14 年電気関係学会関西支部連合大会, Nov. 2002, Japanese, 電気学会, 電子情報通信学会, 情報処理学会, 照明学会, 映像情報メディア学会, 日本音響学会, 電気設備学会, 東大阪, 日本, Domestic conference

  Oral presentation


• Multiple Paralleled Switching PWM Power Supply for Magnetic-Field Current Tracking and Its Digital Optimal Control Considerations

  WATANABE, TAKANO, HIRAKI, FUKUDA, NAKAOKA

  平成 14 年電気・情報関連学会中国支部連合大会, Oct. 2002, Japanese, 電子情報通信学会, 電気学会, 照明学会, 情報処理学会, 映像情報メディア学会, 電気設備学会, 松江, 日本, Domestic conference

  Oral presentation


• Multiple Paralleled Switching Power Supply for MRI Gradient Magnetic-Field and Its Digital Optimal Control

  WATANABE, FUKUDA, TAKANO, NAKAOKA

  平成 13 年電気学会全国大会, Mar. 2001, Japanese, 電気学会, 電子情報通信学会, 照明学会, 映像情報メディア学会, 情報処理学会, 名古屋, 日本, Domestic conference

  Oral presentation


• Switching Power Amplifier System for Gradient Magnetic-Field Current Tracking Control Using Optimal Type-1 Digital Control Scheme

  WATANABE, TAKANO, FUKUDA, NAKAOKA

  平成 11 年電気学会全国大会, Mar. 1999, Japanese, 電気学会, 電子情報通信学会, 照明学会, 映像情報メディア学会, 情報処理学会, 山口, 日本, Domestic conference

  Oral presentation


• High-Power Multiple Paralleled Switching Power Supply and Its Digital Control Scheme

  FUKUDA, TAKANO, HATAKEYAMA, NAKAOKA

  平成 9 年電気関係学会関西支部連合大会, Nov. 1997, Japanese, 電気学会, 電子情報通信学会, 情報処理学会, 照明学会, テレビジョン学会, 日本音響学会, 吹田, 日本, Domestic conference

  Oral presentation


• Gradient Magnetic Field Current Tracking-based Switching Power Supply System with Digital Optimal Regulating Scheme for Medical Use MRI

  WATANABE, TAKANO, FUKUDA, NAKAOKA

  電子情報通信学会技術研究会, Feb. 1997, Japanese, 電子情報通信学会, 福岡, 日本, Domestic conference

  Oral presentation


• Parallel Operation of 4-Switch Full-Bridge Power Amplifiers and A Unique Digital Control Scheme for Advanced Magnetic Resonance Imaging

  HATORI, FUKUDA, YONEMORI, NAKAOKA, OSAWA

  平成 8 年電気関係学会関西支部連合大会, Nov. 1996, Japanese, 電気学会, 電子情報通信学会, 情報処理学会, 照明学会, テレビジョン学会, 日本音響学会, 草津, 日本, Domestic conference

  Oral presentation


• High-Frequency PWM Power Conversion System for MRI Gradient Magnetic Field Generation Using Digital Optimal Control Algorithm

  WATANABE, ISHIBASHI, ARAI, NAKAOKA, FUKUDA

  平成 8 年電気・情報関連学会中国支部連合大会, Oct. 1996, Japanese, 電気学会, 電子情報通信学会, 照明学会, テレビジョン学会, 情報処理学会, 鳥取, 日本, Domestic conference

  Oral presentation


• Development of Parallel PWM High-Power Amplifier for MRI System

  DOMOTO, TAKANO, CHABATA, HATAKEYAMA, FUKUDA, NAKAOKA

  平成 8 年電気学会産業応用部門全国大会, Aug. 1996, Japanese, 電気学会, 仙台, 日本, Domestic conference

  Oral presentation


• Parallel Operation of 4-Switch Full-Bridge Circuits and Unique Digital Control Scheme for Advanced Magnetic Resonance Imaging

  FUKUDA, TAKANO, HATAKEYAMA, NAKAOKA

  パワーエレクトロニクス研究会, Jun. 1996, Japanese, 電気学会, 神戸, 日本, Domestic conference

  Oral presentation


• Latest Power Electronics Technologies and A New Direction in Investigation

  NAKAOKA, YONEMORI, FUKUDA

  平成 7 年電気関係学会関西支部連合大会, Nov. 1995, Japanese, 電気学会, 電子情報通信学会, 情報処理学会, 照明学会, テレビジョン学会, 日本音響学会, 京都, 日本, Domestic conference

  [Invited]

  Invited oral presentation


• Application of Repetitive Learning Control Scheme to Phase-shifted PWM Resonant DC-DC Converter

  FUKUDA, NAKAOKA

  平成 7 年電気関係学会関西支部連合大会, Nov. 1995, Japanese, 電気学会, 電子情報通信学会, 情報処理学会, 照明学会, テレビジョン学会, 日本音響学会, 京都, 日本, Domestic conference

  Oral presentation


• Soft-Switching PWM Power Conversion Amplifier System for Magnetic-Field Current Tracking Control

  FUKUDA, NAKAOKA

  平成 6 年電気関係学会関西支部連合大会, Nov. 1994, Japanese, 電気学会, 電子情報通信学会, 照明学会, テレビジョン学会, 日本音響学会, 吹田, 日本, Domestic conference

  Oral presentation


• Application of Repetitive Learning Control Scheme to Medical Use Resonant PWM DC-DC Converter System

  MATSUO, FUKUDA, YONEMORI, NAKAOKA

  平成 6 年電気関係学会関西支部連合大会, Nov. 1994, Japanese, 電気学会, 電子情報通信学会, 照明学会, テレビジョン学会, 日本音響学会, 吹田, 日本, Domestic conference

  Oral presentation


• State Feedback Control System of Soft-Switching PWM Power Conversion Amplifier for Magnetic-Field Current Tracking

  FUKUDA, NAKAOKA

  平成 6 年電気・情報関連学会中国支部連合大会, Oct. 1994, Japanese, 電気学会, 電子情報通信学会, 照明学会, テレビジョン学会, 情報処理学会, 岡山, 日本, Domestic conference

  Oral presentation


• Application of Repetitive Learning Control Scheme to High-Frequency-Linked PWM DC-DC Converter with Transformer Resonant Operation

  TOKIWA, NAKAOKA, FUKUDA, KIM

  平成 6 年電気・情報関連学会中国支部連合大会, Oct. 1994, Japanese, 電気学会, 電子情報通信学会, 照明学会, テレビジョン学会, 情報処理学会, 岡山, 日本, Domestic conference

  Oral presentation


• A Novel Type Magnetic-Field Current Tracking Soft-Switching PWM Power Conversion Amplifier and Its State-Feedback Control Scheme

  FUKUDA, NAKAOKA

  平成 6 年電気学会産業応用部門全国大会, Aug. 1994, Japanese, 電気学会, 松山, 日本, Domestic conference

  Oral presentation


• Evaluations of High-Frequency PWM Power Conversion System with State Feedback Control-Based Current Tracking Loops

  FUKUDA, NAKAOKA

  平成 5 年電気学会全国大会, Mar. 1993, Japanese, 電気学会, 電子情報通信学会, 照明学会, テレビジョン学会, 情報処理学会, 熊本, 日本, Domestic conference

  Oral presentation


• Evaluations and Design Considerations of High-Frequency Switching PWM Power Conversion Amplifier with State Feedback Control-Based Current Tracking Servo-System

  FUKUDA, NAKAOKA, OGINO, MURAKAMI

  平成 4 年電気関係学会関西支部連合大会, Nov. 1992, Japanese, 電気学会, 電子情報通信学会, 照明学会, テレビジョン学会, 日本音響学会, 神戸, 日本, Domestic conference

  Oral presentation


• High-Frequency Carrier PWM Power Amplifier for Magnetic-Field Current Tracking Control

  OGINO, MURAKAMI, FUKUDA, NAKAOKA

  電気学会電子デバイス/半導体電力変換合同研究会, Oct. 1992, Japanese, 電気学会, 長崎, 日本, Domestic conference

  Oral presentation


• Analysis and Design of High-Frequency Carrier PWM Power Amplified Conversion System for Magnetic-Field Current Tracking Control

  FUKUDA, YONEMORI, NAGAI, NAKAOKA

  電子情報通信学会技術研究会, Sep. 1992, Japanese, 電子情報通信学会, 松本, 日本, Domestic conference

  Oral presentation

• 電気学会


• 生体医工学会

• 心理的ストレスによる不眠予測およびセルフモニタリングツールの開発とその効果検証

  古谷 真樹, 佐藤 幸治, 福田 博也, 近藤 徳彦

  日本学術振興会, 科学研究費助成事業, 基盤研究(C), 神戸大学, 01 Apr. 2023 - 31 Mar. 2027


• Development of low-cost and disposable smart insole for daily gait analysis

  FUKUDA Hiroya

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Challenging Research (Exploratory), Challenging Research (Exploratory), Kobe University, Jun. 2019 - Mar. 2022

  In order to measure in real time the ground reaction force and the center of plantar pressure, we have developed an inexpensive and simple gait measurement smart-insole by combining two or more commercially available inexpensive thin-film force sensors. Several mechanical properties, such as compressive load, shear force and bending stress, were made to evaluate the performance of commercially available inexpensive thin-film force sensors and a new designed triaxial shear force sensor. In addition, the estimating results of ground reaction force waveform and trajectory of the center of plantar pressure were verified experimentally over different footwear and walking pace on a group of subjects. It will be expected that the research results have been contributed to sports instruction and walking rehabilitation in the field.


• Improvement of human movement using haptic sensory information through wearing clothing in daily life

  OSHITA Kazushige

  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), Kyushu Kyoritsu University, Apr. 2018 - Mar. 2021

  Providing additional haptic sensory information through a lightly (< 1N) touching to a fixed object resulted in decreased postural sway during standing. This "light touch effect" suggests that haptic sensory input primarily provides information about body orientation. This study applied this effect in various clothing models. For instance, wearing a fluttering cloth wrapped around the waist and extending to the lower leg was effective in improving gait performance. Therefore, wearing clothing which has a certain amount of space between the material and the body and that makes contact with the body as it moves may enhance individuals' perceptions of their body orientation. Furthermore, such a clothing shape were also effective for motor learning of gait performance. These results suggest that a skirt-like outfit such as the hakama in Japan or kilts in Scotland may be effective to improve human movements as compared with trouser-like clothing that is in continuous contact with the legs.


• Development of insole-type wireless measurement system for daily gait analysis

  FUKUDA HIROYA

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research, Grant-in-Aid for Challenging Exploratory Research, Kobe University, Apr. 2016 - Mar. 2019

  In order to measure in real time the ground reaction force, the center of plantar pressure and the arch of sole, we have developed an inexpensive and simple gait measurement insole system by combining two or more commercially available inexpensive thin-film force sensors. Several mechanical properties, such as compressive load, shear force and bending stress, were made to evaluate the performance of commercially available inexpensive thin-film force sensors and a new designed triaxial shear force sensor. In addition, the estimating results of ground reaction force waveform and trajectory of the center of plantar pressure were verified experimentally over different footwear and walking pace on a group of subjects. It will be expected that the research results have been contributed to sports instruction and walking rehabilitation in the field.


• Development of strength index of human bones by using natural frequencies of bones and measurement equipment for evaluating muscle load

  YANO SUMIO

  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), Kobe University, Apr. 2014 - Mar. 2017

  In order to make mechanical indexes for evaluating the quality and strength of human bones, sectional modulus of cortical bones against bending moment and muscle at forearm were analyzed through CT (computed tomography) images. The aging characteristics of women aged 50 to 82 were investigated. The ratio of cross section of muscle to bone and the strength index by using natural frequency of forearm bones corresponding to Young’s modulus were calculated. These indexes showed the tendency to decrease with aging similarly to the bone mineral density. Effective arrangement of sensors and bending properties of thin piezoelectric films were investigated and then the usage as an equipment for measuring and revealing the load relationship between bones and muscle was ascertained.


• Development of ground reaction force measuring insole and inexpensive wireless measurement system for gait analysis

  FUKUDA HIROYA

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research, Grant-in-Aid for Challenging Exploratory Research, Kobe University, Apr. 2013 - Mar. 2016

  In order to easily and quantitatively evaluate the gait in walking rehabilitation, we have developed a reaction force measuring insole and inexpensive wireless measurement system for gait analysis. Several mechanical properties, such as compressive load, shear force and bending stress, were made to evaluate the performance of commercially available inexpensive thin-film force sensors and a new designed uniaxial shear force sensor. As a result, the accuracy for estimating and considerations upon implementation in force measurement for various daily body activities were revealed. In addition, the estimating results of ground reaction force waveform were verified experimentally over different footwear and walking pace on a group of subjects. It will be expected that a simple and inexpensive system to evaluate daily gait has been developed.


• Development of strength index of human bones by using natural frequencies of bones and evaluation of muscle forces

  YANO SUMIO, FUKUDA Hiroya

  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), Kobe University, 2011 - 2013

  In order to evaluate the quality and strength of human bones, cross sectional areas of bones and muscles of forearm were calculated from computed tomography (CT) image analysis. Then mechanical indexes involving the effect of muscle forces were proposed and the aging porperty was investigated. For comparison the bone mineral density and the strength index by using natural frequency of forearm bones corresponding to Young's modulus were calculated. The proposed indexes with respect to bending and compression showed the tendency to decrease with aging similarly to the bone mineral density and the strength index. Bending and compression properties of thin films of sensors were investigated for revealing the loading relationship between bones and muscle force and measuring those forces, and then the usage as a force sensor was ascertained.


• Research on evaluation of bone strength using a natural frequency and biomechanical characteristics of forearm

  YANO Sumio, FUKUDA Hiroya

  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), Kobe University, 2004 - 2006

  Concerning evaluating the strength and quality of human bones, we proposed some indexes by the measurement of natural frequencies of forearms and bone mineral densities and then investigated these aging characteristics for female over age 50. Bone mineral densities were measured by pQCT method at both 4% and 20% distal sites of radii and the CT images were analyzed. Results of the present research were as follows: 1. Aging characteristics of total bone density and cortical density at the 20% distal site were compared with those of bone densities at the 4% distal site. It was found that the ratio of total bone density at the 20% site to that at the 4% site was about twice for any age group and the decrease rate of cortical density at the 20% site was smaller than that of total bone densities. 2. Concerning the influence of muscles on bones, the sectional areas of muscles and bones were analyzed from CT images at the 20% site. A method for obtaining the muscle area without fat regions was proposed and the ratio of bone areas to muscle areas (B/M ratio) was used as an index for this purpose. 3. For subjects with the measurement of natural frequencies bone strength indexes of three kinds corresponding to the Young's modulus were calculated and these aging characteristics were investigated. The bone strength index using the total bone density at the 4% site is considered to be most available. The decrease rate of the bone strength index for aging is more remarkable than that of bone mineral densities and B/M ratio. It is found that bone mineral densities and the bone area decrease earlier than bone strength indexes and the muscle area.