H−/H∞ Fault Detection for Cyber-Physical Systems with High-Speed Sampling

In addition to external malicious attacks, there are also the faults caused by the network itself in Cyber-physical systems (CPSs). In this paper, the CPS fault detection with control time-delay is considered, and a discrete time system based on delta operator is designed to solve the various problems with high-speed sampling. To reduce the influence of random disturbance on the system, and increase the sensitivity of fault detection at the same time, a H
_-
/H
_∞
fault detection filter is constructed by the method of Lyapunov-Krasovskii functional and linear matrix inequalities (LMIs). Eventually, the results of the experiment are provided to verify the effectiveness of the proposed method.