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arXiv 1503.01968math.OC
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切换镇定的分段光滑控制-李雅普诺夫函数框架

A Piecewise Smooth Control-Lyapunov Function Framework for Switching Stabilization

Yueyun Lu, Wei Zhang

摘要:

研究一般切换非线性系统的切换镇定问题。提出了一种分段光滑控制-李雅普诺夫函数(PSCLF)方法,并给出了一种设计稳定切换律的构造性方法。通过PSCLF的方向导数构造了开关律,并详细讨论了非光滑表面上可能出现的各种技术问题。充分条件导出,以确保闭环Filippov解决方案,包括可能的滑动运动的稳定性。建议PSCLF方法包含了许多现有的结果作为特例,并提供了一个统一的框架来研究非线性切换稳定问题,系统地考虑滑动运动。该框架的应用切换线性系与二次和分段二次控制-李雅普诺夫函数进行了讨论和结果强于文献中现有的方法。通过一个数值例子说明了该方法在控制切换非线性系统中的应用。

英文摘要:

This paper studies switching stabilization problems for general switched nonlinear systems. A piecewise smooth control-Lyapunov function (PSCLF) approach is proposed and a constructive way to design a stabilizing switching law is developed. The switching law is constructed via the directional derivatives of the PSCLF with a careful discussion on various technical issues that may occur on the nonsmooth surfaces. Sufficient conditions are derived to ensure stability of the closed-loop Filippov solutions including possible sliding motions. The proposed PSCLF approach contains many existing results as special cases and provides a unified framework to study nonlinear switching stabilization problems with a systematic consideration of sliding motions. Applications of the framework to switched linear systems with quadratic and piecewise quadratic control-Lyapunov functions are discussed and results stronger than the existing methods in the literature are obtained. Application to stabilization of switched nonlinear systems is illustrated through an numerical example.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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