Resilient Adaptive Event-Triggered Control for Singular Networked Cascade Control Systems Under DoS Attacks

Abstract

This paper addresses the problem of resilient adaptive event-triggered control for singular networked cascade control systems (SNCCSs) under time-varying actuator faults, actuator saturation, DoS attacks, external disturbances, and time-varying delay. The purpose of DoS attacks is to obstruct network communication from time to time, which happens aperiodically. According to the adaptive threshold technique, a resilient adaptive event-triggered mechanism (AETM) is developed to reduce the transmission frequency and also combating the aperiodic DoS attacks. Moreover, the discussed SNCCS is modeled as a switched system due to the presence of attacks that is closely restricted by DoS frequency and duration. Then, the exponential admissible analysis and controller synthesis conditions of the resulting switched SNCCS are obtained and the extended dissipative performance is satisfied by using the Wirtinger-based integral inequality and Lyapunov-Krasovskii functional (LKF) approach. Additionally, a co-design method of the primary and secondary controllers and triggering parameters for the system under consideration is given. Simulation results of a boiler-turbine power plant are presented to validate the proposed method.INDEX TERMS Singular networked cascade control systems (SNCCSs); Adaptive event-triggered (ET) control; Actuator saturation; DoS attacks.