Controller Design Of Event-Triggered Networked Control Systems Under Quantization And Denial-of-Service Attacks

From the current point of view,the waste of communication resources in Networked Control Systems(NCSs)is becoming more and more serious.This phenomenon has caused scholars to study the networked control systems with the event-triggered scheme and quantization.These researches about event-triggered scheme and quantization plays an important role in the practical application in the network control system,but the problem comes at the same time.The networked control system based on the event-triggered scheme is easily affected by the network malicious attacks,which makes the system unstable and unable to carry out the control tasks.Based on the above situation,in order to make the networked control system with event-triggered scheme can offset the impact of network malicious attacks.The event-triggered transmission scheme is given in the paper,and the malicious attacks in the network are considered at the same time.The method can not only reduce communication transmission pressure,but also offset the impact of denial-of-service attacks(DoS).Specifically,the main research contents of this article is:The control problem of continuous networked control system with event-triggered scheme and quantization under denial-of-service attacks is studied.Firstly,the event-triggered scheme is proposed in this paper.Then,the switching system including event triggering mechanism,quantizer and denial-of-service attack is established.Through the method of Lyapunov functional,the stability of the system is studied and its controller is designed.The problem of quantitation control of discrete-time networked control systems based on event triggering scheme under denial of service attack is studied.Firstly,the event-triggered scheme is given.Simultaneously,considering the impact of denial-of-service attacks,event-triggered scheme and the quantization,then we can analyze the collaborative design method about event-triggered parameters and controller feedback gain.And expand the research to analyze the stability and H_? performance of the model,then design the H_? controller.Finally,we summarize the result of this paper.