報告題目：Feedback limitations in nonlinear discrete-time control
報 告 人：李婵穎研究員
所在單位：中國科學院數學與系統科學研究院
報告時間：2022年8月1日 10: 00-11: 00
報告地點：騰訊會議：889-866-971
會議鍊接：https://meeting.tencent.com/dm/aIL14zDA5tDX
校内聯系人：韓月才 hanyc@jlu.edu.cn
報告摘要：An interesting phenomenon occurs when one attempts to control systems with output nonlinearity growing faster than linearity, where similarities between the continuous- and discrete-time cases of adaptive control no longer exist. It is generally known that a large class of continuous-time nonlinear parametric systems, regardless of how fast the growth rate is, can be globally stabilized by the nonlinear damping or back-stepping approach in adaptive control. However, fundamental difficulties arise for the discrete-time case. These difficulties are caused by the inherent limitations of the feedback principle in dealing with uncertainties, which means that systems with uncertainties beyond the feedback capability cannot be stabilized by any discrete-time feedback control law. This talk studies the stabilizability of discrete-time nonlinear parametric systems and tries to give an appropriate characterization of feedback limitations.
報告人簡介：李婵穎本科畢業于四川大學數學系，在中國科學院數學與系統科學研究院獲碩士與博士學位，其後在美國韋恩州立大學及香港大學從事博士後研究，現為中國科學院數學與系統科學研究院研究員。獲國家自然科學基金委傑出青年基金與優秀青年基金，中國工業與應用數學學會青年科技獎以及中國控制會議最佳論文獎。研究興趣包括非線性自适應控制、系統辨識以及随機控制等。
