Observer-based event-triggered control for linear MASs under a directed graph and DoS attacks  

作　　者：Shuo-Qiu Zhang Wei-Wei Che Chao Deng 

机构地区：[1]College of the Institute of Complexity Science,Shandong Key Laboratory of Industrial Control Technology,Qingdao University,Qingdao,People’s Republic of China [2]Institute of Advanced Technology,Nanjing University of Posts and Telecommunications,Nanjing,People’s Republic of China

出　　处：《Journal of Control and Decision》2022年第3期384-396,共13页控制与决策学报（英文）

基　　金：the National Natural Science Foundation of China[61873338];Natural Science Foundation of Shandong Province[ZR2020KF034];Taishan Scholars[tsqn201812052].

摘　　要：In this paper,we investigate the observer-based event-triggered consensus problem for linear multi-agent systems(MASs)under a directed graph and denial-of-service(DoS)attacks.A type of DoS attacks launched by malicious attackers at irregular intervals is considered,which can cause communication channel disruption.A novel event-triggered secure control scheme based on a closed-loop observer is proposed to determine the scheduling of the controller update,and a separation method with less conservativeness is employed to design the controller and observer gains.Then,the frequency and duration of DoS attacks that can be tolerated are analysed for the observer-based secure consensus problem.In addition,a strictly positive minimal event-triggered time interval for each agent is designed with the help of the proposed eventtriggered condition to eliminate the Zeno behaviour.Finally,a numerical simulation is given to verify the theoretical analysis.

关 键 词：Directed graph DoS attacks event-triggered mechanism consensus control multi-agent systems 

分 类 号：TP393.08[自动化与计算机技术—计算机应用技术]