Hybrid-triggered Stabilization for Switched Cyber-physical Systems subject to Denial-of-service Attack
摘要
This work focuses on the problem of networked control stabilization for switched cyber-physical systems that are subjected to denial-of-service (DoS) attack. A hybrid-triggered communication scheme is proposed, which includes a continuous event-triggering condition for normal communication and periodic time-triggering condition for attack’s behavior. It aims to address the packet dropout caused by DoS attack, which leads to insufficient control performance. Based on this, the relationship among the number of consecutive packet dropouts resulting from an attack, adjustment parameters, and sampling period is established, which is used to develop the necessary conditions for attaining the desired control performance at each control updating interval. Subsequently, a set of sufficient conditions based on the time-delay system method is proposed to guarantee the global asymptotical stability of such system by designing the switching signal with average dwell time and sampled controllers. Finally, in order to test the effectiveness of the proposed method, two numerical simulations are performed.