The Consensus Of Multi-Agent Based On Switching Topology And Its Application In Supply Chain

In recent years,the cooperative control problem of multi-agent systems has been widely used in many fields,such as vehicle formation control,sensor network and so on,which is thus causing increasingly attention from scholars.Consensus problem as the basis of the cooperative control of the multi-agent systems refers to designing the appropriate control protocol so that each of the agents achieve the same value.With the rapid development of network technology,more and more scholars have began to keep on the study of networked multi-agent systems and have also made certain progress.However,it will be inevitably affected by many practical factors,for example,time delay,the changes of the information topology structure,disturbance and so on,which are considered comprehensively in the research of the second parts in this paper.What's more,inspired by multi-agent system consensus control theory,the third part will apply the control theory method in the research of supply chain system.Based on analysis and summary of topic backgrounds and the existing literatures,the contributions of this thesis can be concluded as follows.(1)In the first chapter,the concepts multi-agent systems,supply chain systems,the research status in domestic and overseas are given and the shortages of existing research results are pointed out.Finally,the main research contents of this thesis are introduced.(2)The second chapter studies the leader-following H_? consensus problem of networked multi-agent systems with switching topology.In view of the changes of the information topology,a topology-dependent sampled-data consensus control protocol is designed,by which,the leader-following H_? consensus problem is transformed into the H_? control problem of a error switched system with time-varying delays.Controller design criteria for each subsystem are obtained by constructing piecewise Lyapounov-Krasovskii functional,which makes use of the lower and upper bounds of the delays.Multi-agent systems can achieve leader-following H_? consensus under the controller and switching law designed.Finally,a simulation example is given to demonstrate the effectiveness of the proposed method.(3)The third chapter discusses the inventory H_? consensus problem of supply chain systems with switching topology.Considering the effects of the changes of information topology occurred in the process of the information transferring between the nodes of the supply chain systems,switching controllers based on average dwell time are designed involving two parts:production control;inventory consensus control.With this control,the inventory H_? consensus problem of the supply chain systems is transformed into the H_? control problem of a error switched system with time-varying delay.Similar to the methods adopted in the research of multi-agent systems,The conditions based on which supply chain systems can achieve the inventory H_? consensus are also given.The proposed methods are illustrated by a simulation example.(4)In the fourth chapter,we summarize the present research work and give a prediction concerned with the future work.