H∞ Robust Control of Networked System under DoS Attacks and Dynamic Quantification

This paper investigates the design problem of H
∞
robust control strategy for networked control systems with denial-of-service (DoS) attacks and signal quantization. Firstly, a Bernoulli variable determined by the signal-to-noise ratio is used to describe the probability of DoS attacks, and the dynamic quantization mechanism is utilized to reduce the communication burden of the network channels. In such a framework, the model of networked control systems with multiple constraints such as DoS attacks and external disturbances is established. Secondly, by means of Lyapunov stability theory and linear matrix inequality technique, sufficient conditions of exponentially mean-square stability for the networked control systems are derived, and the design method of H
∞
robust control strategy is provided to realize the stabilization control of networked systems. Finally, the correctness and effectiveness of the proposed control method are verified by a simulation example.