Sliding mode control for networked control systems under DoS attacks via an event-triggered scheme

This paper aims at proposing the sliding mode control method based on event-triggered scheme for networked control systems with periodic denial-of-service (DoS) attacks in the network environment. Firstly, considering the possible security problem in open communication networks, an event-triggered strategy ensuring the security of communication links under DoS attacks is designed, which can weaken the adverse impact of jamming signals in communication while providing benefits in improving resource utilization. Secondly, combined with the event-triggered control strategy, by aid of constructing the sliding surface function, the sliding mode dynamics is deduced, and the stability criterion with disturbance attenuation performance in H∞ sense is established by an improved inequality technique. On this basis, an control law is designed, which ensures the reachability of the sliding mode surface. Finally, the effectiveness of the control strategy is proved by a numerical example and an example of an inverted pendulum on a cart.