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Dynamic Output Feedback Robust H_∞ Control of Uncertain Switched Nonlinear Systems
Min Wang,Jun Zhao,Georgi M. Dimirovski 제어·로봇·시스템학회 2011 International Journal of Control, Automation, and Vol.9 No.1
The problem of robust H∞ control problem for a class of switched nonlinear systems with parameter uncertainty is studied by using single Lyapunov function method. The problem under switch-dependent and switch-independent dynamic output feedbacks is solved respectively. Sufficient conditions for solvability of the problem are obtained. The Lyapunov function and the corresponding switching law are explicitly constructed. A numerical example is given to demonstrate the validity of the proposed approach.
Feedback Passivation of Switched Nonlinear Systems Using Storage-like Functions
Yanyan Liu,Goran S. Stojanovski,Mile J. Stankovski,Georgi M. Dimirovski,Jun Zhao 제어·로봇·시스템학회 2011 International Journal of Control, Automation, and Vol.9 No.5
This paper addresses the issues of passivity and feedback passivation of switched nonlinear systems via multiple storage functions. The concept of storage-like functions for switched systems is presented. A sufficient condition for passivity of switched nonlinear systems is given via multiple storage functions under some switching signal. Then, the result is extended to find conditions under which a switched system is feedback equivalent to a passive switched system. Furthermore, passivity of switched cascade systems is investigated.