Event-Triggered Control for Networked Lurie Control Systems Subject to Periodic Denial-of-Service Attacks and Time Delays

A controller design method based on an event-triggered mechanism for networked Lurie control systems subject to periodic denial-of-service (DoS) attacks and time delays is proposed in this article. First, an observer is constructed for the case where the system state is unavailable. According to the impact of periodic DoS attack signal and time delays, the networked Lurie control system is modeled as a switched system composed of two subsystems. Second, according to Lyapunov theory, the absolute exponential stability conditions of the system are derived, and the relationship among the system sampling period, time delays, attack (sleeping) period, and the closed-loop system decay rate is obtained. Third, the joint design method of the controller, the observer, and the event-triggered mechanism is given. Finally, an example is used to verify the effectiveness of the obtained results.