Design Of Event-Triggered Controller And Filter For Networked Singular Systems Under Denial-of-Service Attacks

In recent years,networked singular systems have been widely used in power systems,aerospace,control and other fields.At the same time,they are also facing the problem of shortage of communication resources.The traditional time-triggered mechanism can no longer meet the needs of saving communication resources.In order to improve the utilization of communication resources,more and more scholars have begun to study networked control systems based on event-triggered mechanism.At present,many achievements have been reported.Event-triggered networked singular systems are rarely studied by scholars.With the increasing openness of the network,networked singular systems are more vulnerable to denial-of-service attacks(Do S),but currently there are few achievements related to the security control of networked singular systems.Based on the above situation,in order to make networked singular systems not only save communication resources,but also offset the impact of network attacks,this article mainly studies the control and filtering of networked singular systems based on event triggering under denial-of-service attacks.The specific contents are as follows:For linear networked singular systems,the H_?stability of event-based control and quantitative control under unknown periodic denial of service attacks is investigated.First,based on a new event-triggered mechanism,unknown periodic denial-of-service attack and quantization are comprehensively considered to establish a singular switching system model.Then,a piecewise Lyapunov functional method is used to derive the exponential stability criterion for the singular switching system.Finally,by solving the linear matrix inequality,the joint design of the event-triggered mechanism and the H_?controller is realized.For linear filtering error singular systems,the H_?stability of event-based control under unknown periodic denial-of-service attacks is studied.First,a resilient event-triggering communication scheme is introduced to establish a filtering error singular switching system model under unknown periodic denial-of-service attacks.Then,a piecewise Lyapunov functional method is applied to derive sufficient conditions to guarantee the system's regularity,impulse-free and exponential stability.Finally,in order to design event-triggered mechanism and filter that meet the system performance,a joint design scheme is proposed.Aiming at the application of singular systems in multi-machine power systems,the control problem of multi-machine power systems based on singular switching systems under unknown periodic denial-of-service attacks is discussed.First,the multi-machine power system is transformed into a linear continuous singular system,and the event-triggered mechanism is combined to establish a multi-machine power system model based on the singular switching system under unknown periodic denial-of-service attacks.Then,the system is studied by the piecewise Lyapunov functional method.Finally,the linear matrix inequality in the theorem is solved to obtain the controller parameters and event-triggering parameters that meet the system performance requirements.Finally,it summarizes the full paper and proposes future research work.