报告题目：Modeling and Control of  Hysteresis Nonlinearities in  Smart

                     Actuators

报告人：   Professor Chun-Yi Su

              加拿大Concordia  University教授

报告时间：2016年3月28日上午10：30

报告地点：南一楼中311室

邀 请 方：“多谱信息处理技术”国家级重点实验室

Abstract:  Hysteresis nonlinearities are very common in magnetic  materials, smart materials and industrial systems. For decades, the existence of such nonlinearities  have provided one of the most difficult challenges to control design engineers  since the entire Laplace domain and most state space control design techniques  were developed exclusively for differentiable linear or nonlinear systems.  Hence, the existence of hysteresis nonlinearities in smart material based actuators and systems  were neglected and the controllers were designed based on the nominal smooth  systems. When the systems are considered with non-differentiable nonlinearities,  these methods encountered substantial difficulties in the analysis, model  fitting and control design stages. It was extremely difficult, if not  impossible, to design or prove stability of such systems. The development of  techniques for the identification of such nonlinearities in realistic industrial  plants has emerged as a significant problem in itself.

This talk is intended  to raise awareness of modeling and control techniques and to provide an  opportunity to discuss state-of-the-art solutions for the problems. The  presentation and discussion will range from modeling of hysteresis, to the  design of corresponding control schemes, especially in the absence of complete  information concerning the system model and state.

Biography: Dr. Chun-Yi Su received his Ph.D. degrees in control  engineering from South China University of Technology in 1990. After a  seven-year stint at the University of Victoria, he joined the Concordia  University in 1998, where he is currently a Professor of Mechanical and  Industrial Engineering and holds the Concordia Research Chair in Control. He has  also held several short-time visiting positions including a Chang Jiang Chair  Professorship by China’s Ministry of Education and JSPS Invitation Fellowship  from Japan, and Qian Ren Talents Professor from China. His research covers control theory and its applications to various  mechanical systems, with a focus on control of systems involving hysteresis nonlinearities. He is the author or  co-author of over 300  publications, which have appeared in journals, as book chapters and in  conference proceedings. In addition to his academic activities, he has worked  extensively with industrial organizations on various projects.

Dr. Su has been an  Associate Editor of IEEE Transactions on Automatic  Control, IEEE Transactions on Control Systems Technology,  Mechatronics, Control Engineering Practice, and   several other journals. He  has served as Chair/Co-Chair for numerous international  conferences.