Anti-Windup Secure Fault-Tolerant Control for Input Saturated Nonlinear Cyber-Physical Systems Against Multichannel Nonperiodic DoS Attacks

This article investigates the problem of secure control for input saturated nonlinear cyber-physical systems subject to faults and multichannel nonperiodic denial-of-service (DoS) attacks. First, the model is reconstructed where the nonlinear characteristics can be described by using the Takagi–Sugeno fuzzy modeling technique. Then, with the help of the sampling mechanism and the anti-windup compensator, a sampled data-based anti-windup fault-tolerant control scheme with membership function mismatch is proposed. This scheme effectively mitigates the impact of faults while alleviating performance degradation caused by input saturation. Furthermore, to address the challenges posed by multichannel nonperiodic DoS attacks, a resilient observer-based anti-windup secure fault-tolerant control strategy is further proposed to guarantee system stability. Finally, the simulation results are also given to verify the validity of the proposed method.