Faculty Members


Professor OKA Koichi

Year of birth Gender Male
Affiliation School of Systems Engineering
Intelligent Mechanical Systems Engineering Course, Department of Engineering, Graduate School of Enginering
Advanced Robotics Research Center, Research Institute
Job titles
Personal web site http://www.lab.kochi-tech.ac.jp/oka-lab/

Areas of specialization
Laboratory/research office Control and Mechatronics Laboratory
My laboratory investigates control technology for application in various systems, including magnetic suspension, aerospace and robotics. In control technology work, we use numerical model expressions reflecting control strategies to achieve target performance. In that framework, we study comprehensive technology for sensing techniques, driving and transforming mechanisms and intelligent computer control.
Current reseach topics
Educational background 1983: Master
Professional background 1992-1999: 
Academic societies

Courses  * Courses provided in English are shown with (E) mark

Undergraduate school ▼

Graduation Thesis
Basic Control Systems
Feedback Control System

Graduate school ▼

Advanced Control Theory
Seminar 1
Seminar 2
Seminar 3
Seminar 4
Individual Work for Graduate
Advanced Seminar 1
Advanced Seminar 2

Research activities

Research papers ▼

  1. Authors: Eizentals Peteris, OKA Koichi
    Title: 3D pose estimation of green pepper fruit for automated harvesting
    Journal: Computers and Electronics in Agriculture, Vol. 128, pp. 127-140, Elsevier
    Year: 2016/10/01
  2. Authors: Annasiwaththa Annasi Waththege Buddhika Imantha, OKA Koichi
    Title: Design concept and analysis of a magnetically levitated linear slider with non-contact power transfer
    Journal: Int. J. of Applied Electromagnetics and Mechanics, Vol. 52, No. 1-2, pp. 207-213, IOS Press
    Year: 2016
  3. Authors: Junjie Jin, Duan, Zhenyun, Sun, Feng, Li, Qing, Xia, Pengpeng, Jin, Jiaqi, OKA Koichi
    Title: Model identification and analysis for parallel permanent magnetic suspension system based on ARX model
    Journal: Int. J. of Applied Electromagnetics and Mechanics, Vol. 52, No. 1-2, pp. 145-152, IOS Press
    Year: 2016
  4. Authors: OKA, Koichi, Tomohiro Okazaki, Toshiyuki Morimitsu
    Title: 2 DOF non-contact magnetic suspension system: A feasibility study
    Journal: International Journal of Applied Electromagnetics and Mechanics, Vol. 45, pp. 627-632, IOS Press
    Year: 2014
  5. Authors: BACHCHE Shivaji, OKA, Koichi
    Title: Distinction of Green Sweet Peppers by Using Various Color Space Models and Computation of 3 Dimensional Location Coordinates of Recognized Green Sweet Peppers Based on Parallel Stereovision System
    Journal: Journal of System Design and Dynamics, Vol. 7, No. 2, pp. 178-196, 日本機械学会
    Year: 2013/06/28
  6. Authors: Zhong Xu, Feng Sun, Jun Jie, OKA, Koichi
    Title: Proposal of Noncontact Operation Robotic Hand Using Permanent Magnetic Suspension
    Journal: Advanced Materials Research, Vol. 712-715, pp. 2277-2280, Scientific.Net
    Year: 2013/06
  7. Authors: BACHCHE Shivaji, OKA, Koichi
    Title: Performance Testing of Thermal Cutting Systems for Sweet Pepper Harvesting Robot in Greenhouse Horticulture
    Journal: Journal of System Design and Dynamics, Vol. 7, No. 1, pp. 36-51, 日本機械学会
    Year: 2013/03/15
  8. Authors: SUN FENG, OKA, Koichi, Junjie Jin
    Title: A zero suspension force improvement method of a permanent magnetic suspension device
    Journal: International Journal of Applied Electromagnetics and Mechanics, Vol. 41, No. 1, pp. 1-12, IOS press
    Year: 2013/01
  9. Authors: OKA, Koichi, SUN FENG, JIN Junjie
    Title: Improvement Methods of Zero Suspension Force Performance of a Variable Flux Path Control Device
    Journal: 日本AEM学会誌, Vol. 20, No. 3, pp. 612-618, 養賢堂
    Year: 2012/09
  10. Authors: OKA, Koichi, Feng Sun, Akira Tsurumi, Gota Nakamura
    Title: Study of the Spinning Mechanism Resulting from Permanent Magnet Linear Actuation
    Journal: Materials Science Forum, Vol. 721, pp. 255-260, Trans Tech Publications
    Year: 2012/06/04
  11. Authors: Sadouirai Fausan, OKA, Koichi
    Title: The Frequency Response of Vibration Control with a Linear Actuator and a Permanent Magnet
    Journal: 日本AEM学会誌, Vol. 20, No. 2, pp. 526-531, 養賢堂
    Year: 2012/06
  12. Authors: SUN FENG, OKA, Koichi, JIN Junjie
    Title: Improvement of Zero Suspension Force Performance Using a Special Magnet for a Magnetic Suspension Device
    Journal: Advanced Engineering Forum , Vol. 2-3, pp. 1099-1104, Trans Tech Publications, Switzerland
    Year: 2011/12/22
  13. Authors: SUN FENG, OKA, Koichi, Akira Tsurumi
    Title: Torque Analysis of a Noncontact Spinning System Using Linearly Actuated Magnets
    Journal: 日本AEM学会誌, Vol. 19, No. 3, pp. 517-520, 日本AEM学会
    Year: 2011/09
  14. Authors: SUN FENG, JIN Junjie, OKA, Koichi
    Title: Characteristics Analysis of Noncontact Spinning Mechanism with Numerical Simulation
    Journal: Advanced Materials Research, Vol. 308-310, pp. 2146-2151, Trans Tech Publications, Switzerland
    Year: 2011/08/16
  15. Authors: SUN FENG, JIN Junjie, OKA, Koichi
    Title: Noncontact Magnetic Suspension of an Iron Ball Using Flux Path Control Mechanism
    Journal: Advanced Materials Research, Vol. 230-232, pp. 573-577, Trans Tech Publications, Switzerland
    Year: 2011/05/12
  16. Authors: Sun Feng, OKA, Koichi
    Title: Feasibility Analysis of Two Iron Balls Simultaneous Suspension Using Flux Path Control Mechanism
    Journal: Journal of System Design and Dynamics, Vol. 5, No. 5, pp. 1155-1166, 日本機械学会
    Year: 2011
  17. Authors: Sadouirai Fausan, OKA, Koichi, Akiyuki Sano, Yuuta Hirokawa
    Title: Vibration Control With Linear Actuator Permanent Magnet System using LQR Method
    Journal: Journal of System Design and Dynamics, Vol. 5, No. 6, pp. 1238-1250, 日本機械学会
    Year: 2011
  18. Authors: Y.Inoue, T.Liu, K.Shibata, K.Oka, Chunguang LI
    Title: Addional Design Features of a Mater-slave Control System with Force Sensing and Energy Recycling for upper Limb Rehablitation Robots
    Journal: Instrumentation Science & Technology
    Year: 2010/9
  19. Authors: Koichi Oka, Feng Sun
    Title: Noncontact Spining Mechanism Using Rotary Permanent Magnets
    Journal: 電気学会論文誌D
    Year: 2010/7
  20. Authors: K. Oka, Sun Feng, Yuuta Saibara
    Title: Magnetic suspension system by flux path control using rotary actuator
    Journal: International Journal of Applied Electromagnetics and Mechanics
    Year: 2010/10/01
  21. Authors: C. Li, Y. Inoue, T. Liu, K. Shibata, K. Oka
    Title: Design and Implementation of a Compact Master-Slave Robotic System with Force Feedback and Energy Recycling
    Journal: Journal of System Design and Dynamics, Vol. 2, No. 2, pp. 282-295, Trans. JSME
    Year: 2010
  22. Authors: Chunguang LI, Yoshio INOUE, Tao LIU, Kyoko SHIBATA, Koichi OKA
    Title: Design and Implementation of a Compact Master-Slave Robotic System with Force Feedback and Energy Recycling
    Journal: Journal of System Design and Dynamics, Vol. 4, No. 1, pp. 13-25, JSME
    Year: 2010
    Title: Feasibility study for multipurpose usage of CCTV
    Journal: 14th ITS world congress, CD-ROM
    Year: 2007
  24. Authors: OKA, Koichi
    Title: A Miniaturized Levitation System With Motion Control Using a Piezoelectric Actuator
    Journal: IEEE Trans. on Control System Technology, Vol. 10, No. 5, pp. 666-670
    Year: 2002

Keynote lectures ▼

Invited lectures ▼

Notable projects ▼

Awards ▼

Patents ▼

Grants-in-Aid for Scientific Research from the Japanese government ▼

Competitive research funds ▼

Social activities

Committee roles ▼

  1. Publish Chair, International Symposium on Magnetic Bearings, 2016-2017
  2. Program Committee Member, The 17th International Symposium on Applied Electromagnetics and Mechanics (ISEM), The 17th International Symposium on Applied Electromagnetics and Mechanics (ISEM), 2015-2015
  3. Program Committee member IEEE ICMA 2014, IEEE, 2014-2014
  4. 14th International Symposium on Magnetic Bearings, Program Committee, 2014-2014
  5. SICE Annual Conference Chair, 2014-2014

Published books ▼

  1. A self-controlled master-slave robot and its application for upper limb rehabilitation, Springer, 2010