Simultaneous fault detection and control for uncertain discrete-time stochastic systems with limited communication

Abstract

In the paper, the simultaneous fault detection and control (SFDC) problem is concerned for uncertain discrete-time stochastic systems with limited communication. An integrated module with a filter and a dynamic output feedback controller is designed to achieve the desired fault detection (FD) and control objectives, simultaneously. The event-triggered technology is employed to save the network communication resources, while two event detectors are utilized to decrease the amount of data transmitted from the sensor to the SFDC module and from the SFDC module to the plant. A novel method is proposed to ensure that the obtained closed-loop model is robustly stochastically stable and satisfies the desired detection and control performances. Sufficient conditions are derived to obtain the parameters of filter, controller and event detectors. Finally, the validity of the design strategy is verified by a simulation case.