Title: Recent Progress on Parameter Identification and Adaptive Control of Quantization Systems
Abstract:
Systems with quantized data widely exist in practice. The well-known examples include the systems with finite bandwidth communication channels, and those with binary-valued data, set-valued data, feature data, censored data etc. Control of such systems are essentially different the ones with accurate data, since due to the existence of the quantizers and the coupling of quantization error with control inputs, high nonlinearities and large or even unbounded quantization errors may occur and come into the closed-loop systems. So, to get a satisfactory or optimal control goal, the controller and the quantizer should be uniformly designed. This involves two fundamental problems: To get a satisfactory parameter estimate, how much information do we really need? To get a good control, how much information do we really need? In this plenary lecture, I would like to present some recent progresses of our research group in this field, including parameter identification of typical linear and nonlinear systems with binary-valued output observations or quantized inputs, adaptive tracking control of systems with binary-valued output observations and time-varying thresholds, distributed dynamic consensus with quantized communication data, output feedback quantized observer-based synchronization, coordination over multi-agent networks with finite-level quantization, etc.
Biography:
Ji-Feng Zhang received his B.S. degree in mathematics from Shandong University, China, in 1985, and the Ph.D. degree from the Institute of Systems Science, Chinese Academy of Sciences (CAS), China, in 1991. He is now with the Academy of Mathematics and Systems Science, CAS. His current research interests include system modeling, adaptive control, stochastic systems, and multi-agent systems.
He is an IEEE Fellow, IFAC Fellow, CAA Fellow, CSIAM Fellow, member of the European Academy of Sciences and Arts, and Academician of the International Academy for Systems and Cybernetic Sciences. He received the Second Prize of the State Natural Science Award of China in 2010 and 2015, respectively. He is a Vice-President of the Chinese Association of Automation and the Chinese Mathematical Society. He was a Vice-Chair of the IFAC Technical Board, member of the Board of Governors, IEEE Control Systems Society; Convenor of Systems Science Discipline, Academic Degree Committee of the State Council of China; Vice-President of the Systems Engineering Society of China. He has served as Editor-in-Chief, Deputy Editor-in-Chief or Associate Editor for more than 10 journals, including Science China Information Sciences, National Science Review, IEEE Transactions on Automatic Control and SIAM Journal on Control and Optimization etc.
