Guaranteed cost fault-tolerant control for uncertain networked control system with packet dropouts

The problem of fault-tolerant control is studied for uncertain networked control system (NCS) with packet dropouts and actuator fault. A more practical and general model of actuator gain faults is adopted. The stochastic packet dropouts are considered existing not only between sensor and controller but also between controller and actuator. Thus, the NCS is modeled as Markovian jump linear system with four operation modes. Sufficient conditions to ensure that the NCS is stochastically stable and satisfies the guaranteed cost performance are developed. The corresponding guaranteed cost fault-tolerant controller is also designed. Finally, a numerical example is given to demonstrate the effectiveness of the proposed method.