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Journal of Systems Science & Complexity 2023年第3期36卷 909-921页

作者： SU Hang CHENG Bin LI Zhongkui State Key Laboratory for Turbulence and Complex Systems and Department of Mechanics and Engineering Science College of EngineeringPeking UniversityBeijing 100871China Department of Control Science and Engineering College of Electronics and Information EngineeringTongji UniversityShanghai 201804China Frontiers Science Center for Intelligent Autonomous Systems Shanghai 201210China

This paper investigates the cooperative output regulation problem of heterogeneous linear multi-agent systems over directed graphs with the constraint of communication *** that there exists an exosystem whose state information is not available to all agents,the authors develop distributed adaptive event-triggered observers for the followers based on relative information between neighboring *** should be pointed out that,two kinds of time-varying gains are introduced to avoid relying on any global information associated with the network,and dynamic triggering conditions are designed to get rid of continuous *** the basis of the designed observers,the authors devise a local controller for each *** with the existing related works,the main contribution of the current paper is that the cooperative output regulation problem for general directed graphs is solved requiring neither global information nor continuous communications.

关键词： Adaptive control consensus cooperative output regulation directed graph event-triggered control multi-agent systems

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Data-driven cooperative output regulation of multi-agent systems under distributed denial of service attacks

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Science China(Information Sciences) 2023年第9期66卷 5-20页

作者： Weinan GAO Zhong-Ping JIANG State Key Laboratory of Synthetical Automation for Process Industries Northeastern University Department of Electrical and Computer Engineering Tandon School of Engineering New York University

This paper addresses an optimal, cooperative output regulation problem for multi-agent systems with distributed denial of service attacks and unknown system dynamics. Unlike existing studies, the proposed solution is essentially a learning-based control strategy such that one can obtain a distributed control policy with internal models through online data and analyze the resilience of closed-loop systems, both without the precise knowledge of system dynamics in the state-space model. The efficiency of the proposed methodology is validated using computer simulations.

关键词： cooperative output regulation adaptive dynamic programming learning-based control multi-agent systems cybersecurity

Secure cooperative output regulation for linear parameter-varying systems under DoS attacks: a resilient observer approach

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Science China(Information Sciences) 2023年第9期66卷 35-49页

作者： Chengcheng FU Hao ZHANG Chao HUANG Zhuping WANG Huaicheng YAN School of Electronic and Information Engineering Tongji University School of Information Science and Engineering East China University of Science and Technology

This paper investigates the cooperative output regulation problem of heterogeneous linear parameter-varying multi-agent systems under denial-of-service(DoS) attacks. The matrix and state of the exosystem are taken to be unknown to the followers. Moreover, with the assumption that only a directed spanning tree exists in the communication topology, a resilient observer is proposed to exponentially estimate the global information, which can also be effective under DoS attacks with a certain intensity. Afterward,to avoid using the exact value of the exosystem matrix, a distributed online algorithm is proposed, through which the linear parameter-varying output regulation equation is asymptotically solved. Based on the resilient observer and the solution of the output regulation equation, a distributed regulator is proposed to achieve asymptotic cooperative output regulation for all agents. Some numerical simulations are conducted to verify the effectiveness of the proposed observer, algorithm, and controller.

关键词： cooperative output regulation heterogeneous multi-agent systems DoS attacks linear parameter-varying systems

cooperative output regulation of linear heterogeneous multi-agent systems based on the observer by event-triggered mechanism

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Cooperative output regulation of linear heterogeneous multi-...

第32届中国控制与决策会议

作者： Juan Zhang Yanzheng Lu Huaguang Zhang Yunfei Mu College of Information Science and Engineering Northeastern University School of mechanical Engineering and Automation Northeastern University School of Information Science and Engineering Northeastern University

This paper studies the problem of cooperative output regulation for heterogeneous linear multi-agent system by using event-triggered control mechanism. The controller is designed by constructing state observer and compensator for each agent. And it is proved that under the proposed distributed control protocol, the output regulation problem is solved and the Zeno phenomenon is excluded. Finally, a simulation result is given to show that regulation output errors tend to zero and there does not happen Zeno behavior for each agent.

关键词： cooperative output regulation Zeno behavior event-triggered multi-agent system

cooperative output regulation of Discrete-time Linear Multi-Agent Systems with Event-Triggered Adaptive Distributed Observer

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Cooperative Output Regulation of Discrete-time Linear Multi-...

第32届中国控制与决策会议

作者： Maxiao Hou Yuhou Wu Huaitao Shi Xiaotian Bai Jie Sun College of Mechanical Engineering Shenyang Jianzhu University The State Key Laboratory of Rolling and Automation Northeastern university

In this paper,the event-triggered adaptive distributed observer is applied to solve the problem of cooperative output regulation for discrte-time linear multi-agent ***,we propose two distributed event-triggered strategies,one is relative threshold event-triggered strategy,the other is switching threshold event-triggered *** we apply these two event-triggered strategies to an adaptive distributed observer,which does not need each follower to know the leader’s matrix information,so it can be fully ***,the effectiveness of the method is illustrated by digital simulation.

关键词： Event-triggered discrete-time linear multi-agent systems cooperative output regulation

Fully Distributed Event-triggered cooperative output regulation of Linear Parameter-varying Systems

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Fully Distributed Event-triggered Cooperative Output Regulat...

第40届中国控制会议

作者： Chengcheng Fu Hao Zhang Zhuping Wang Department of Control Science and Engineering Tongji University Shanghai Research Institute for Intelligent Autonomous Systems Tongji University

The cooperative output regulation problem of linear parameter-varying multi-agent systems via fully distributed eventtriggered adaptive control is studied in this paper. It is assumed that agents cannot communicate with each other continuously. To solve this problem, a fully distributed event-triggered adaptive controller is designed such that the problem studied in this paper can be solved properly.

关键词： Event-triggered control distributed control cooperative output regulation linear parameter-varying multi-agent system

Event-Triggering cooperative output regulation of Singular Linear Multi-Agent Systems with Zeno-Free Triggering

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Event-Triggering Cooperative Output Regulation of Singular L...

第32届中国控制与决策会议

作者： Wei Wang Huaguang Zhang Zhenwei Liu Juan Zhang School of Information Science and Engineering Northeastern University State Key Laboratory of Synthetical Automation for Process Industries(Northeastern University) School of Information Science and Engineering Northeastern University(Northeastern University)

In this paper,cooperative output regulation problem of singular heterogeneous linear multi-agent systems with directed communication topology is *** design a triggering strategy that combines time-triggering and event-triggering so that Zeno behavior can be avoided *** with the existing literatures,the main characteristic of this paper is to apply the method of time-and event-triggering to singular multi-agent *** results show that the proposed triggering mechanism combined with the proposed distributed control law can solve the problem of cooperative output ***,numerical simulation is given to show the effectiveness of the controller and the triggering mechanism.

关键词： cooperative output regulation Event-triggered control Linear multi-agent systems Singular systems

cooperative neural-adaptive fault-tolerant output regulation for heterogeneous nonlinear uncertain multiagent systems with disturbance

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Science China(Information Sciences) 2021年第7期64卷 181-192页

作者： Shanling DONG Guanrong CHEN Meiqin LIU Zheng-Guang WU College of Electrical Engineering Zhejiang University Institute for Advanced Study Chengdu University Department of Electrical Engineering City University of Hong Kong National Laboratory of Industrial Control Technology Institute of Cyber-Systems and ControlZhejiang University

This paper investigates the cooperative output regulation problem for heterogeneous nonlinear uncertain multiagent networked systems subject to actuator failure, bounded matched or mismatched disturbances or disturbances produced by a given linear exosystem. Accurate information about nonlinearity,actuator failure and disturbance may be completely unknown. First, a distributed finite-time observer is designed to estimate the dynamics of the exosystem on a finite-time interval over a communication ***, a neural-adaptive control protocol is proposed. It is shown that(i) closed-loop multiagent systems are asymptotically stable, with output synchronization errors that tend to zero in the absence of mismatched disturbance, and(ii) the states of the closed-loop multiagent systems and the output synchronization errors are bounded in the presence of mismatched disturbance. Finally, a simulation example is given to demonstrate the effectiveness of the proposed control strategy.

关键词： cooperative output regulation actuator failure matched/mismatched disturbance distributed finite-time observer neural-adaptive control

New Results in cooperative Adaptive Optimal output regulation

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Journal of Systems Science & Complexity 2024年第1期37卷 253-272页

作者： DONG Yuchen GAO Weinan JIANG Zhong-Ping State Key Laboratory of Synthetical Automation for Process Industries Northeastern UniversityShenyang 110819China Department of Electrical and Computer Engineering Tandon School of EngineeringNew York UniversityBrooklynNY 11201USA

This paper investigates the cooperative adaptive optimal output regulation problem of continuous-time linear multi-agent *** the multi-agent system dynamics are uncertain,solving regulator equations and the corresponding algebraic Riccati equations is challenging,especially for high-order *** this paper,a novel method is proposed to approximate the solution of regulator equations,i.e.,gradient descent *** is worth noting that this method obtains gradients through online data rather than model information.A data-driven distributed adaptive suboptimal controller is developed by adaptive dynamic programming,so that each follower can achieve asymptotic tracking and disturbance ***,the effectiveness of the proposed control method is validated by simulations.

关键词： Adaptive dynamic programming cooperative output regulation gradient descent method multi-agent systems.

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output regulation of Multiple Heterogeneous Switched Linear Systems

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International Journal of Automation and computing 2018年第4期15卷 492-499页

作者： Hong-Wei Jia Jun Zhao State Key Laboratory of Synthetical Automation for Process Industries Northeastern University College of Information Science and Engineering Northeastern University Normal College Shenyang University

This paper addresses the cooperative output regulation problem of a class of multi-agent systems （MASs）. Each agent is a switched linear system. We propose an agent-dependent multiple Lyapunov function （MLF） approach to design the switching law for each switched agent. The distributed controller for each agent is constructed based on a dynamic compensator. A sufficient condition for the solvability of the output regulation problem of switched agent networks is presented by distributed controllers and agent-dependent multiple Lyapunov function approach. Finally, simulation results demonstrate the effectiveness of our theory.

关键词： Switched multi-agent systems(MASs) cooperative output regulation switched heterogeneous linear system agent-dependent multiple Lyapunov function(MLF) distributed control.

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