earticle

영어

The linear switched system is a kind of hybrid system that simultaneously possesses characteristics of both continuous event systems and discrete event systems. In this paper the issue of fault detection of switched systems is investigated using unknown input observers (UIO) and an average dwell time approach. The key parameter of UIOs is designed by solving linear matrix inequalities, which differs from traditional design methods. Based on UIOs, a residual generator is derived for detecting faults. A simulation case study validates the proposed approach.