Event-triggered Consensus Control For Multi-agent Systems Under Cyber-attacks

Multi-agent systems are widely used in unmanned aircraft clusters,intelligent robots,and intelligent transportation.Its theoretical methods and technical research have attracted the attention of scholars at home and abroad.Among them,consensus control,a fundamental problem in the theoretical research of multi-agent systems,has gradually become a research hotspot in the field of control.Most of the existing consensus research on multi-agent systems considers the energy supply in an ideal environment and the channel bandwidth under unconstrained conditions,which will inevitably have a particular impact on its application range.In addition,due to the gradual opening of communication links,potential malicious attacks at the network layer will have a particular impact on the system’s stability.Therefore,considering factors such as non-ideal communication environment and channel bandwidth limitation,it is of great theoretical significance and practical value to research the consensus control problem of multi-agent systems under cyber-attacks.The main research contents of this article are as follows:This article proposes the consensus control method based on the event-triggered mechanism for the consensus control problem of the nonlinear multi-agent system under DoS attacks.Firstly,different from the traditional fixed-period DoS attacks mode,this article considers the situation that the multi-agent system is intermittently attacked by DoS attacks,and constructs an aperiodic cyber-attacks mode to describe the uncertain attack frequency and duration.Then,the consensus control problem of nonlinear multi-agent systems is studied,and a discrete consensus control strategy based on the event-triggered mechanism is proposed.Finally,based on the Lyapunov stability theory,the coupling mechanism among event-triggered parameters,DoS attack parameters,and convergence were analyzed,and sufficient conditions for realizing the consensus state of the nonlinear multi-agent system under DoS attacks were established.The Zeno behavior between agents was excluded.This article studies the leader-following consensus control problem for the multiagent system subjected to simultaneous DoS attacks and deception attacks.The adaptive event-triggered control strategy is proposed based on the sampling information at the discrete time of the system.Considering the uncertainty of the cyber-attacks mode and the limited ability of a single DoS attacks mode,this article constructs a hybrid cyber-attacks mode combining DoS attacks and deception attacks and studies the consensus control method of the linear multi-agent system under cyber-attacks.The non-periodicity of DoS attacks and the fact that the DoS attacks do not follow a specific probability distribution may lead to the loss of sampled data,which brings certain challenges to designing consensus protocols for the multi-agent system.In addition,an adaptive event-triggered mechanism combining the advantages of periodic sampling and event-triggered transmission is proposed,which effectively reduces the consumption of network resources and the communication burden.Finally,using the Lyapunov stability theory,a leader-follower consensus protocol for the multi-agent system under hybrid cyber-attacks is established.