Asynchronous fault detection for delayed semi-markov jump systems with mismatched mode-dependent nonlinearities

This paper deals with fault detection problem of delayed semi-Markov jump systems with disturbances. More specifically, the asynchronous phenomenon is taken into account between modes of linear and nonlinear dynamics. Accordingly, an efficient solution of fault detection is developed based on asynchronous mode-dependent fault filter with condi-tional probability. On the basis of constructing appropriate Lyapunov-Krasovskii functions, sufficient criteria are established such that H-infinity performance can be satisfied for filter error with residual signal. Furthermore, the devised filter gains are computed in terms of convex optimization. Eventually, the applicability of our proposed design is verified by an illustra-tive example. (C) 2021 Elsevier Inc. All rights reserved.