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Considering a class of networked control systems with long time delays, the fault detection is carried out when the control delays are present between the controller and the actuator. Firstly, a modeling approach of networked control system is presented, and the state estimate error equation is given by constructing the fault observer. And then, based on Lyapunov stability theory, a linear matrix...
Considering a class of networked control systems with long time delays and unknown interference inputs, the robust fault detection is carried out when the control and output delays are both present. The robust fault observer is constructed based on discrete switched systems. And a linear matrix inequality gives the stability condition of this observer. Moreover, the fault detection threshold is selected...
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