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On adaptive control of discrete-time nonlinear uncertain systems

2019-01-08 13:05 ???

报告人:李婵颖 【中国科学院系统科学研究所】

时???间:2019-01-08 15:30-16:30

地???点:卫津路校区6号楼111教


报告人简介

中国科学院系统科学研究所研究员

报告内容介绍

      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 dif?culties arise for the discrete-time case. These dif?culties are caused by the inherent limitations of the feedback principle in dealing with uncertainties, which means that discrete-time systems with uncertainties beyond the feedback capability cannot be stabilized by any feedback control law. Today, our talk is aimed to control discrete-time nonlinear uncertain systems, in both stochastic framework and deterministic framework.

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