Sliding mode fault-tolerant control for networked control system via switching

Based on switching control theory and sliding mode control technology, a multi-model fault-tolerant control scheme for networked control system is proposed. The networked system is described as a discrete switching system when the actuators lose their effectiveness. For each subsystem of the global switching system, sliding mode controller is designed to guarantee the stability and tracking performance of the subsystem. The multi-Lyapunov functions approach is used to analyze the stability of the closed-loop switching system, and it is verified that the system is global asymptotical stable under the sliding mode controllers and arbitrary switching laws. Simulation shows that, when the actuators partly lose their effectiveness, the global system remains stability and expected performances.