Design of Robust Fault-tolerant Controller Based on Delay Model for Networked Control Systems

The problem of robust fault-tolerant control for networked control systems(NCS) with uncertain disturbance and uncertain parameter is discussed.The uncertainty of network-induced delays is converted to the uncertainty of the parameter matrix.And in order to eliminate the effect of the asynchronism,the states are transformed to the augmented states.Based on Lyapunov stability theory and liner matrix inequality(LMI),the sufficient conditions for closed-loop networked control system with uncertain disturbance possessing robust integrity against sensor or actuator failures are given by adopting state feedback control law.The robust fault fault-tolerant controller is designed via solving several liner matrix inequalities.The numerical example shows the effectiveness and feasibility of the proposed method.