Necessary and sufficient condition for stabilizability of discrete-time linear switched systems: A set-theory approach

Authors:
Mirko Fiacchini;Marc Jungers
Affiliations:
-;-
Venue:
Automatica (Journal of IFAC)
Year:
2014

Citing 6
Cited 0

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Abstract

In this paper, the stabilizability of discrete-time linear switched systems is considered. Several sufficient conditions for stabilizability are proposed in the literature, but no necessary and sufficient. The main contributions are the necessary and sufficient conditions for stabilizability based on the set-theory and the characterization of a universal class of Lyapunov functions. An algorithm for computing the Lyapunov functions and a procedure to design the stabilizing switching control law are provided, based on such conditions. Moreover, a sufficient condition for non-stabilizability for switched system is presented. Several academic examples are given to illustrate the efficiency of the proposed results. In particular, a Lyapunov function is obtained for a system for which the Lyapunov-Metzler condition for stabilizability does not hold.