Switching-Like Event-Triggered Control of Nonlinear Networked Systems Under DoS Attacks Using Predictor-Based Observer

This paper addresses the switching-like event-triggered control (SETC) problem for nonlinear networked systems under denial-of-service (DoS) attacks using predictor-based observer. By employing the prediction approach, a novel predictor-based state observer is constructed to estimate the system states, where an output predictor is used to attenuate the impact of measurement delay. To mitigate the bandwidth pressure and the influence of DoS attacks, a switching-like event-triggered scheme (SETS) with two threshold parameters is developed. With aid of the event-triggered data, an output feedback controller is proposed and the relationship between the DoS attacks duration, sampling period and two threshold parameters in the nonlinear model are considered. Some sufficient conditions are obtained to guarantee the global exponential stability (GES) of the nonlinear networked systems. At last, the designed SETC law is confirmed to be feasible via a practical example.