Active fault tolerant control for networked control systems with actuator fault

Abstract

This paper investigates the problem of active fault tolerant control for networked control systems with network delay, package loss, as well as actuator fault. Treating the aforementioned communication constraints as a unified definition of view, called the round-trip time (RTT) delay. An adaptive fault observer is devised in the sensor to evaluate the state and the actuator fault. According to the estimation of the state and the actuator fault, a networked predictive fault tolerant control (NPFTC) strategy is introduced to eliminate both the effect of RTT delay and the actuator fault actively. A control prediction generator is designed by using an state feedback control law with the fault compensation form to compensate for the actuator fault, and a network delay compensator is designed in the actuator to compensate for the RTT delay. Then a stability and acceptable performance of NCSs is obtained. Eventually, some system simulations are supply to demonstrated the availability of the presented approach.