Robust control and fault detection for continuous-time switched systems subject to a dwell time constraint

This paper is concerned with the simultaneous robust control and fault detection problem for continuous-time switched systems subject to a dwell time constraint. To meet the control and detection objectives under the constraint, the controller/detectors matching different time intervals are first constructed in an output feedback framework. A state-dependent switching law that obeys the dwell time constraint is then designed such that the closed-loop switched system is asymptotically stable and also with the robust and detection performance. Further, the proposed switching law is dependent only on the partial measurable states of the closed-loop system, which is applicable when the states of system mode are fully unavailable. Thus, our result extends the existing ones in state-dependent switching and state-feedback frameworks. Finally, a numerical example is given to illustrate the effectiveness of the proposed method. Copyright (C) 2015 John Wiley & Sons, Ltd.