讲座名称：自适应控制与有限时间估计与控制

讲座人：Denis Efimov

讲座时间：9月25日 19:00-22:00 ; 9月26日 19:00-22:00

讲座地点：Zoom会议直播

主持人：平续斌

讲座人介绍：

Denis Efimov 2001年获得圣彼得堡国立电气工程大学（俄罗斯）自动控制博士学位；2006 年在俄罗斯科集团圣彼得堡机械工程问题研究所获得工程科学博士。从 2006 年到 2011 年，在法国苏佩莱克的L2S CNRS实验室、比利时列日大学的蒙特菲奥雷集团研究所和法国波尔多大学的IMS CNRS 实验室工作。2011年入职法国国家信息与自动化研究所（里尔-北欧中心）。从 2018 年开始为法国国家信息与自动化研究所 Valse 团队负责人。主要研究领域包括非线性系统控制、齐次系统估计与控制、监督控制系统、区间观测器估计、有限时间估计和稳定性研究等。目前发表150多篇期刊论文，并且多个 IFAC TC 的成员和 IEEE 的高级成员。此外担任控制领域知名期刊IEEE Transactions on Automatic Control、IFAC Journal on Nonlinear Analysis: Hybrid Systems 以及Automatica副主编。

讲座内容：Indirect adaptive control：The problem of adaptive control is motivated in direct and indirect setting. The issue of online parameter estimation is introduced and several popular solutions (Normalized gradient algorithm, Normalized least-squares algorithm) are surveyed. Conditions of parametric convergence and persistency of excitation are considered. Robustness of adaptation algorithms is investigated. Indirect adaptive control problematics are given, with the model reference and the pole placement control approaches.

Adaptive Observers for Nonlinear Systems：Adaptive observers serve to simultaneously estimate the unmeasured state vector and unknown parameters in dynamical systems. Two main approaches are considered to design of adaptive observers for nonlinear systems. Main definitions and basic proofs are given.

Estimation in finite or fixed time: In this presentation, first, the idea of estimation on a finite Interval of time is motivated. Second, the definitions of finite-time an fixed-time stability are given, and the theory of homogeneous systems is presented, which is frequently used for design and analysis of finite-time or fixed-time stable systems. Finally, designs of finite-time and fixed-time converging observers are described. Methods of realization of differentiation algorithms are considered.

讲座时间：

2021年9月25日 Zoom Meeting ID: 929 7087 9255 Passcode: 996959

链接https://univ-lille-fr.zoom.us/j/92970879255?pwd=MmVhb2hiMzZNVVRZQ3RxbzlHRWM3dz09

19：00-20：00 Indirect adaptive control: Motivation and parameter estimation

20：00-21:00 Indirect adaptive control: Conditions of parametric convergence and robustness

21：00-22：00 Indirect adaptive control: The model reference and the pole placement control approaches

2021年9月26日 Zoom Meeting ID: 961 9510 4222 Passcode: 680613

链接https://univ-lille-fr.zoom.us/j/96195104222?pwd=QmxsRU1VVU1oZ2J2cWsvNnRoZmJnUT09

19：00-20: 00 Adaptive Observers for Nonlinear Systems

20：00-21: 00 Estimation in finite or fixed time: Convergence rates and homogeneity methods

21：00-22: 00 Estimation in finite or fixed time: Observers and differentiators

主办单位：机电工程集团