In order to enhance the reliability of wireless sensor actuator networks (WSANs)

this paper proposes an eigenstructure optimized fault detector for wireless networked control systems.Since the random packet delays caused by the wireless communication networks has adverse impacts on the control systems

the impacts of wireless network-induced delays are modeled as an external disturbance and an eigenstructure optimization method is proposed in the frequency-domain to enhance the fault detector's sensitivity to the fault and improve its robustness against the network delays.The main advantage is that the assumption of a known transition matrix of Markov jumping system is avoided.The performance of the proposed fault detector is demonstrated by the results of hybrid MATLAB/NS2 simulations.