Professor at Tokyo University of Technology and IEEE Fellow
A methodology for improving tracking precision in servo systems: An equivalent-input-disturbance estimator approach
Abstract There are disturbances, nonlinearities, and uncertainties in a mechatronic system. Many control methods have been devised to suppress their influence and to achieve satisfactory control performance. In this talk, I am going to explain a method called the equivalent-input-disturbance approach. It took the influence caused by those factors to be an equivalent disturbance on the control-input channel and developed an improved servo system to compensate for it. This ensures high control performance. I am going to explain the basic idea, the control-system configuration, some design methods, and some simulation and experimental results that demonstrate the validity of the method.
Bio Professor Jinhua She received his B.S. degree in engineering from Central South University, Changsha, China, in 1983; and the M.S. and Ph.D. degrees in engineering from Tokyo Institute of Technology, Tokyo, Japan, in 1990 and 1993, respectively. In 1993, he joined the School of Engineering, Tokyo University of Technology, where he is currently a professor. Dr. She's research interests include control theory and application, repetitive control, active disturbance rejection, mobile learning, and assistive robotics. He devised control methods such as position-domain repetitive control, two-dimensional repetitive control, and equivalent input disturbance approach. He has published more than 400 academic journal papers, 11 authorized invention patents, 4 monographs, 6 textbooks, 1 translation, and 15 chapters of monographs. He received the IFAC (International Federation of Automatic Control) Control Engineering Practice Paper Prize in 1999 (jointly with M. Wu and M. Nakano). Dr. She is an IEEE Fellow, a member of IEEE IES AdCom (Management Committee), a member of IEEE Hyperintelligence Committee Advisory Board, and one of the founding chairs of the China-Japan International Workshop on Information Technology and Control Applications. He served as the Chair of IEEE IES Human Factors Technical Committee from 2018 to 2021, and IEEE IES Cluster 4 Representative from 2020 to 2021 (containing 6 TCs). He serves as a Technical Editor of IEEE/ASME Transactions on Mechatronics and an Associated Editor of IEEE Transactions on Industrial Electronics, IEEE Journal of Emerging and Selected Topics in Industrial Electronics, IEEJ Journal of Industry Applications, Journal of Advanced Computational Intelligence and Intelligent Informatics, and Intelligence and Robotics.