Event-based State Estimator And H_? Filter Design For Complex Network Systems With Quantization

In recent years,complex networks have gained a lot of attention in various kinds of fields.Scholars have paid great attention to complex network systems and they have gained many research results,including network control,reliability analysis and state estimation,and so on.Nowadays,the state estimation problem of dynamic systems and the problem of filter design have been quite important in many research areas,so it has important theoretical significance and application value to study these problems in complex network systems.Due to the increasing information transmission and the communication channel constraints in the actual network environment,event-triggered communication scheme is widely used by more and more researchers in the research of network control.Meanwhile,in order to improve the communication capacity of the transmission channel,quantization mechanism has been widely used in the research of network control system.In this paper,in order to save the network bandwidth resources and reduce the burden of the network effectively,we investigate the problem of state estimator and H_?filter design for complex network systems with event-triggered scheme and quantization.The main contents of this paper are outlined as follows:1.In the second chapter,an event-triggered communication scheme and quantization are employed to reduce the burden of network transmission.The problem of event-triggered state estimator design is investigated for complex network systems with quantization.By utilizing Lyapunov stability theory and linear matrix inequality techniques,sufficient conditions are established which can guarantee the augmented estimation error system to be asymptotically stable.Furthermore,the explicit expression is provided for the desired state estimator parameters.2.In the third chapter,considering the increasing information transmission and the communication channel constraints in complex network systems,an event-triggered H_?filter design is considered for complex network systems with quantization.A filtering error system model is established based on the event-triggered mechanism.By using technique of linear matrix inequalities,sufficient conditions are obtained in which the H_?filtering error system is exponential asymptotically stable in the mean square.Then,the explicit expression is given for the designed H_?filter parameters.Finally,we summarize the main results of this paper and propose some problems that are worth further study.