Research On Consensus Of Multi-Agent Systems Under DoS Attacks

In recent years,extensive attention has been received on the research of multi-agent systems.In the meantime,effective applications have been achieved in many related fields,such as biology,IOT,intelligent robots,etc.As for distributed multi-agent system,the consistency of the system behavior is fully affected by the information exchange among the agents,that is,the network communication of the system.Therefore,for multi-agent systems,the security of the network is crucial to achieve consistency.But today with the rapid development of network technology,network attacks often occur.Therefore,network security has also been an indispensable part of the research on the consistency of multi-agent systems.As a very common form of network attack,the impact of DoS attack cannot be ignored.At the same time,there are often uncertainties in the process of system operation,or there are changes in the topology of the system.For multi-agent system under DoS attack,the main work of this paper is as follows:1.The group consistent behavior of nonlinear multi-agent system under DoS attack is studied.A distributed control protocol based on local information is adopted,which enables multi-agent systems to achieve consistency in their respective groups under DoS attack.At the same time,the case with switching topology in the system is also considered.Based on Lyapunov method,the consistency condition is given by graph theory knowledge.2.The group lag consistent behavior of multi-agent systems with switching topology under periodic DoS attacks is studied.A distributed controller is designed to make the multiagent system reach the group lag agreement under the periodic DoS attack,and the sufficient conditions for reaching the agreement are given.At the same time,the proof is given based on Lyapunov method,and the correctness of the conclusion is verified by MATLAB simulation.3.The bipartite consensus of multi-agent system under DoS attack is studied,and the operating cost of the controller is further considered.An impulsive control protocol is adopted to make the multi-agent system achieve bipartite consensus under DoS attack.Considering that in the actual operation of the system,there are often uncertainties,and the uncertainties are also considered.Finally,the sufficient condition for the system to reach consistency is proved by Lyapunov function,and the correctness of the conclusion is further proved by simulation in MATLAB.