Event-triggered Control for Networked Control Systems under Denial-of-Service Attack

This paper investigates the networked control systems controller design and synthesis under the denial-of-service (DoS) attacks. The denial of service attack will affect the communication and security performance of the system in the networked control system. In order to ensure the robustness of the system, a relative event-triggered mechanism is proposed, which is applied to the networked control system combined with the observer. Combined with the observer, it is applied to the networked control system, which can alleviate the communication pressure. In this paper, an observer-based control law is designed for the case where the system state is not completely known, the system can also have stable performance under the denial of service attack. Finally, the effectiveness of the proposed method in responding to and eliminating denial of service attacks, is verified by an example of an Internet-based testbed system.