Proportional-Integral Observer Design for Switched Systems

X.-L. Liu and G.-R. Duan (PRC)


Switched system, PI-observer, Robust observer, Linear matrices inequality


This paper deals with proportional-integral observer (PI observer) design for switched systems under arbitrary switching sequences. The proposed approach detects the existence of a switched quadratic Lyapunov function to check the asymptotic stability of switched systems. Two equivalent conditions which can guarantee the PI observers to track the state signal are developed. At last, a numerical evaluation illustrates the feasibility and advantage of PI-observer for switched systems.

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