Event-triggered adaptive control for networked control systems under two stochastic cyber-attacks

摘要

This paper studies an improved event-triggered control for networked control systems (NCSs) under two kinds of cyber-attacks with limited communication bandwidth. In order to reduce the unnecessary transmissions, a novel adaptive event-triggered scheme is employed to determine whether the sensor measurements should be transmitted or not. It is assumed that the network transmissions may be attacked by two randomly occurring cyber-attacks, then a mathematical model is obtained and a sufficient condition is derived to guarantee the asymptotical stability of closed-loop system, which is expressed in terms of linear matrix inequality (LMI). Especially, an augmented Lyapunov-Krasovskii functional (LKF) is constructed and an improved reciprocal convex technique is proposed to reduce the conservatism. Finally, a numerical example is presented to show our obtained results.