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Intelligent Automation & Soft Computing 2023年第1期35卷 853-866页

作者： S.Sakthivel V.Vivekanandhan M.Manikandan Department of Computer Science and Engineering Sona College of TechnologySalem 636005TamilnaduIndia Department of Computer Science and Engineering Adhiyamaan College of EngineeringHosur 635109TamilnaduIndia

Irrigation plays a significant role in various agricultural cropping methods deployed in semiarid and arid regions where valuable water applications and managing are considered crucial *** factors such as weather,soil,water,and crop data need to be considered for irrigation maintenance in an efficient besides uniform manner from multifaceted and different information-based systems.A multi-agent system(MAS)has been proposed recently based on diverse agent subsystems with definite objectives for attaining global MAS objective and is deployed on Cloud Computing paradigm capable of gathering information from Wireless Sensor Networks(WSNs)positioned in rice,cotton,cassava crops for knowledge discovery and decision *** radial basis function network has been used for irrigation ***,in recent work,the security of data has not focused on where intruder involvement might corrupt the data at the time of data transferring to the cloud,which would affect the accuracy of decision *** handle the above mentioned issues,an efficient method for irrigation prediction is used in this *** factors considered for decision making are soil moisture,temperature,plant height,root *** above-mentioned data will be gathered from the sensors that are attached to the *** data will be forwarded to the local server,where data encryption will be performed using Adaptive Elliptic Curve Cryptography(AECC).After the encryption process,the data will be forwarded to the *** the data stored in the cloud will be decrypted key before being given to the deci-sion-making ***,the uniform distribution-based fuzzy neural network is formulated based on the received data information in the decisionmaking *** decision regarding the level of water required for cropfields would be *** on this outcome,the water volve opening duration and the level of fertilizers required will be *** results demons

关键词： Irrigation multi-agent system precision irrigation accuracy elliptic curve cryptography encryption wireless sensor networks fertilizers

Fixed-time group consensus of second-order multi-agent systems based on event-triggered control

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Chinese Physics B 2023年第7期32卷 329-336页

作者：武肖帅孙凤兰朱伟 Jürgen Kurths College of Automation Chongqing University of Posts and TelecommunicationsChongqing 400065China School of Science Chongqing University of Posts and TelecommunicationsChongqing 400065China Department of Complexity Science Potsdam Institute for Climate Impact ResearchPotsdam 14473Germany Institute of Physics Humboldt University of BerlinBerlin 12489Germany

The problem of fixed-time group consensus for second-order multi-agent systems with disturbances is *** cooperative-competitive network,two different control protocols,fixed-time group consensus and fixed-time eventtriggered group consensus,are *** is demonstrated that there is no Zeno behavior under the designed eventtriggered ***,it is proved that for an arbitrary initial state of the system,group consensus within the settling time could be obtained under the proposed control protocols by using matrix analysis and graph ***,a series of numerical examples are propounded to illustrate the performance of the proposed control protocol.

关键词： event-triggered control group consensus multi-agent system fixed-time

Event-trigger-based consensus secure control of linear multi-agent systems under DoS attacks over multiple transmission channels

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Science China(Information Sciences) 2020年第5期63卷 105-118页

作者： Yang YANG Yanfei LI Dong YUE College of Automation & College of Artificial Intelligence Nanjing University of Posts and Telecommunications Jiangsu Engineering Laboratory of Big Data Analysis and Control for Active Distribution Network Nanjing University of Posts and Telecommunications Institute of Advanced Technology Nanjing University of Posts and Telecommunications

This paper proposes a consensus secure control scheme in the presence of denial-of-service(DoS)attacks based on an event-trigger mechanism. In contrast to a scenario in which attacks are the same and simultaneously paralyze all channels, the DoS attack addressed in this paper occurs aperiodically and results in the independent interruption of multiple transmission channels. A sufficient condition for the attack duration is designed and a distributed event-triggered control scheme is proposed, where the updated instants are triggered aperiodically to reduce the required communication resources. It is shown that the overall system is stable with the proposed scheme according to the Lyapunov stability theory and that Zeno behavior is excluded. Finally, a numerical example is presented to verify the effectiveness of the proposed scheme.

关键词： multi-agent system event-triggered control consensus secure control denial-of-service attack multiple transmission channels

Event-triggered encirclement control of multi-agent systems with bearing rigidity

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Science China(Information Sciences) 2017年第11期60卷 91-108页

作者： Yangguang YU Zhiwen ZENG Zhongkui LI Xiangke WANG Lincheng SHEN College of Mechatronics & Automation National University of Defense Technology State Key Laboratory for Turbulence and Complex systems Department of Mechanics and Aerospace EngineeringCollege of Engineering Peking University

In recent years, the problem of multi-agent encirclement has attained much attention and was extensively studied. However, few work consider the factor that the on-board calculation as well as the communication capacity in the multi-agent system is limited. We investigate the encirclement control by employing the newly developed bearing rigidity theory and event-triggered mechanism. Firstly, in order to reduce the onboard loads,the event-triggered mechanism is considered in the framework and further an event-triggered control law based on bearing rigidity is proposed. The input-to-state stability(ISS) of networked agents is also analyzed by using the Lyapunov method and the cyclic-small-gain theory. In addition, the lower bound for the inter-event times is provided. Finally, to verify the efficiency and feasibility of the proposed encirclement control law, numerical experiments are investigated.

关键词： encirclement control event-triggered multi-agent system bearing rigidity

Event-triggered control for containment maneuvering of second-order MIMO multi-agent systems with unmatched uncertainties and disturbances

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Chinese Journal of Aeronautics 2020年第11期33卷 2959-2971页

作者： Yibo ZHANG Dan WANG Zhouhua PENG Lu LIU Shimin WANG School of Marine Electrical Engineering Dalian Maritime UniversityDalian 116026China Department of Electrical and Computer Engineering University of AlbertaEdmontonAlberta T5J 4P6Canada

This paper is concerned with distributed containment maneuvering of second-order multi-Input multi-Output(MIMO)multi-agent systems with non-periodic communication and *** agent is subject to unmatched nonlinear dynamics and external ***-triggered containment maneuvering control methods is developed based on a modular ***,an estimator module is constructed based on neural networks and the nonperiodic obtained follower information through event-triggered ***,a controller module is designed by using the identified information from the estimator module and a third-order linear tracking *** event-triggered mechanism is introduced for updating the ***,a path update law is designed based on the non-periodic leader information through event-triggered *** closed-loop system cascaded by the estimation subsystem and control subsystem is proved to be input-to-state stable,and Zeno behavior is excluded in the control *** proposed method is capable of reducing the consumption of communication and actuation.A simulation example is provided to substantiate the effectiveness of the proposed event-triggered control method for distributed containment maneuvering of second-order MIMO multi-agent systems.

关键词： Containment maneuvering Event-triggered control Modular design multi-agent system Neural network

Finite-time formation control for first-order multi-agent systems with region constraints

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Frontiers of Information Technology & Electronic Engineering 2021年第1期22卷 134-140页

作者： Zhengquan YANG Xiaofang PAN Qing ZHANG Zengqiang CHEN College of Science Civil Aviation University of ChinaTianjin 300300China College of Artificial Intelligence Nankai UniversityTianjin 300350China

In this study,the finite-time formation control of multi-agent systems with region constraints is *** agents have first-order dynamics and a common target area.A novel control algorithm is proposed using local information and *** the communication graph is undirected and connected and the desired framework is rigid,it is proved that the controller can be used to solve the formation problem with a target *** is,all agents can enter the desired region in finite time while reaching and maintaining the desired formation ***,a numerical example is given to illustrate the results.

关键词： Finite-time formation multi-agent system Asymptotic convergence Set constraint Lyapunov theorem

Reduced-Order Observer-Based Leader-Following Formation Control for Discrete-Time Linear multi-agent systems

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IEEE/CAA Journal of Automatica Sinica 2021年第10期8卷 1715-1723页

作者： Zhongxin Liu Yangbo Li Fuyong Wang Zengqiang Chen College of Artificial Intelligence Nankai UniversityTianjin 300350 Tianjin Key Laboratory of Intelligent Robotics Nankai UniversityTianjin 300350China

Formation control of discrete-time linear multi-agent systems using directed switching topology is considered in this work via a reduced-order observer, in which a formation control protocol is proposed under the assumption that each directed communication topology has a directed spanning tree. By utilizing the relative outputs of neighboring agents, a reduced-order observer is designed for each following agent. A multi-step control algorithm is established based on the Lyapunov method and the modified discrete-time algebraic Riccati equation. A sufficient condition is given to ensure that the discrete-time linear multi-agent system can achieve the expected leader-following ***, numerical examples are provided so as to demonstrate the effectiveness of the obtained results.

关键词： Discrete-time systems formation control leader-following multi-agent system reduced-order observer

Leader-following consensus of linear discrete-time multi-agent systems subject to jointly connected switching networks

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Science China(Information Sciences) 2018年第11期61卷 171-178页

作者： Junwei LIU Jie HUANG Shenzhen Research Institute The Chinese University of Hong Kong Department of Mechanical and Automation Engineering The Chinese University of Hong Kong

In this paper, we further study the leader-following consensus problem for a class of linear discrete-time multi-agent systems subject to jointly connected switching digraphs. We first establish a stability result for a class of linear switched systems under a more relaxed assumption than those in the ***, we apply this stability result to obtain the solution to our problem, which contains previous results as special cases. Finally, we apply our result to an example that cannot be handled by any existing result.

关键词： multi-agent system discrete-time consensus jointly connected digraphs

Consensus of multi-agent systems with dynamic join characteristics under impulsive control

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Frontiers of Information Technology & Electronic Engineering 2021年第1期22卷 120-133页

作者： Xiang HU Zufan ZHANG Chuandong LI School of Communication and Information Engineering Chongqing University of Posts and TelecommunicationsChongqing 400065China Chongqing Key Laboratory of Nonlinear Circuits and Intelligent Information Processing College of Electronic and Information EngineeringSouthwest UniversityChongqing 400715China

We study how to achieve the state consensus of a whole multi-agent system after adding some new agent groups dynamically in the original multi-agent *** analyze the feasibility of dynamically adding agent groups under differen t forms of net work topologies that are currently common,and obtain four feasible schemes in theory,including one scheme that is the best in actual industrial ***,we carry out dynamic modeling of multi-agent systems for the best *** control theory and Lyapunov stability theory are used to analyze the conditions so that the whole multi-agent system with dynamic join characteristics can achieve state ***,we provide a numerical example to verify the practicality and validity of the theory.

关键词： multi-agent system Network topology Impulsive input Dynamic join charac teristics State consensus