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Chinese Journal of Electrical Engineering 2024年第2期10卷 103-115页

作者： Lizhen Wu Heng Yang Jianping Wei Wendong Jiang College of Electrical and Information Engineering Lanzhou University of TechnologyLanzhou 730050China National Active Distribution Network Technology Research Center Beijing Jiaotong UniversityBeijing 100044China

Microgrids are networked control systems with multiple distributed generators(DGs).Microgrids are associated with many problems,such as communication delays,high sampling rates,and frequent controller updates,which make it challenging to realize coordination control among the ***,finite-time consensus algorithms and event-triggered control methods are combined to propose a distributed coordination control method for microgrid *** DG in the microgrid system serves as an agent node in the control network,and a distributed secondary controller is designed using finite-time consensus algorithm,such that the frequency and voltage restoration control has a faster convergence time and better anti-interference *** event-triggered function was designed based on the state information of the *** controller exchanges the state information at the trigger *** stability is analyzed using the Lyapunov stability theory,and it is verified that the controller cannot exhibit the Zeno phenomenon in the event-triggered process.A simulation platform was developed in Matlab/Simulink to verify that the proposed control method can effectively reduce the frequency of controller updates during communication delays and the burden on the communication network.

关键词： Microgrid event-triggered control distributed secondary control finite-time consensus algorithm coordination control

coordination control Method for Preventing Sub/Super Synchronous Oscillations of Multi-wind Farm Systems

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CSEE Journal of Power and Energy Systems 2023年第5期9卷 1655-1665页

作者： Guoqing He Weisheng Wang Haijiao Wang China Electric Power Research Institute Beijing 100192China

In recent years,sub/super-synchronous oscillations occur frequently in large-scale wind power bases throughout *** the oscillation frequencies are close to the fundamental frequency,the current components can spread over a large area,and may destroy the shafting of rotating devices in the power *** the control strategy and parameters of wind turbines can prevent this problem to some extent,however,due to complex operational conditions and continuous development of wind power,the off-line improvement measures on wind turbines cannot eliminate the potential oscillation *** paper proposes an oscillation risk screening and stability assessment method,and develops a coordination control method for large-scale wind farm systems to prevent sub/supersynchronous *** Nyquist criterion and the modal analysis method are combined to generate quantitative factors for the stability assessment and the control strategy *** coordination control method consists of minute-level power coordinated allocation and second-level fast power control to prevent and eliminate the oscillations.A detailed simulation model of a multiple wind farms system originated from an actual wind power base in China is presented to verify the effectiveness of the proposed method.

关键词： coordination control prevention sequence impedance sub/super-synchronous oscillations wind farm

coordination control strategy based on characteristic model for 3-bearing swivel duct nozzles

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Science China(Technological Sciences) 2014年第12期57卷 2347-2356页

作者： WANG Xiang Yang ZHU Ji Hong YANG Jia Li LIU Kai School of Aerospace Tsinghua University Department of Computer Science and Technology Tsinghua University

A coordination control strategy is developed for 3-bearing swivel duct （3BSD） nozzles. A 3BSD nozzle＇s deflection angle and direction are changed through rotations of three revolute pairs. There is a nonlinear relationship between the deflection an- gle/direction and the rotation angles. The rotation speed of a revolute pair is limited by the power of the actuator. The moment of inertia and the aerodynamic load for each revolute pair are different and time-varying. A high-precision control system of 3BSD nozzles is required for applications on vertical and/or short take-off and landing （V/STOL） aircrafts. Difficulties of co- ordination control of 3BSD nozzles are distinct travel ranges, speed constraints, time^xarying dynamic models, and disturb- ances. The proposed control strategy is a combination of the characteristic model and tlF e dynamic control allocation method. A dynamic control allocation module is used as the coordination supervisor, which is aware of the kinematic model, the con- straints, and the dynamic models of the revolute pairs. Second-order characteristic models are used to represent the dynamic behavior of the revolute pairs. The gradient projection algorithm is modified for parameter estimation. A modified all-coefficient adaptive controller is developed to reject the disturbances. Experimental results of a scaled 3BSD nozzle indi- cate that the coordination control strategy is effective.

关键词： 3-bearing swivel duct nozzle thrust vector coordination control characteristic model adaptive control dynamic con-trol allocation

coordination control of Greenhouse Environmental Factors

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International Journal of Automation and computing 2011年第2期8卷 147-153页

作者： Feng Chen Yong-Ning Tang Ming-Yu Shen Department of Automation University of Science and Technology of China Hefei 230027 PRC School of Information Technology Illinois State University Normal IL 61790 USA School of Computer and Information Science Hefei University of Technology Hefei 230066 PRC

Optimal control of greenhouse climate is one of the key techniques in digital *** climate,a nonlinear and uncertain system,consists of several major environmental factors such as temperature,humidity,light intensity,and CO 2 *** to the complex coupled correlations,it is a challenge to achieve coordination control of greenhouse environmental *** paper proposes a model-free coordination control approach for greenhouse environmental factors based on *** control policy is found through systematic interaction with the dynamic environment to achieve optimal control for greenhouse climate with the control cost *** order to decrease systematic trial-and-error risk and reduce the computational complexity in Q-learning algorithm,case-based reasoning （CBR） is seamlessly incorporated into the Q-learning *** experimental results demonstrate that this approach is practical,highly effective and efficient.

关键词： Q-learning case-based reasoning (CBR) greenhouse environmental factors coordination control coupled correlation trial-and-error.

Multi-UAV coordination control by chaotic grey wolf optimization based distributed MPC with event-triggered strategy

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Chinese Journal of Aeronautics 2020年第11期33卷 2877-2897页

作者： Yingxun WANG Tian ZHANG Zhihao CAI Jiang ZHAO Kun WU School of Automation Science and Electrical Engineering Beihang UniversityBeijing 100083China Flying College Beihang UniversityBeijing 100083China

The paper proposes a new swarm intelligence-based distributed Model Predictive control(MPC)approach for coordination control of multiple Unmanned Aerial Vehicles(UAVs).First,a distributed MPC framework is designed and each member only shares the information with *** Chaotic Grey Wolf Optimization(CGWO)method is developed on the basis of chaotic initialization and chaotic search to solve the local Finite Horizon Optimal control Problem(FHOCP).Then,the distributed cost function is designed and integrated into each FHOCP to achieve multi-UAV formation control and trajectory tracking with no-fly zone ***,an event-triggered strategy is proposed to reduce the computational burden for the distributed MPC approach,which considers the predicted state errors and the convergence of cost *** results show that the CGWO-based distributed MPC approach is more computationally efficient to achieve multi-UAV coordination control than traditional method.

关键词： Chaotic Grey Wolf Optimization(CGWO) coordination control Distributed Model Predictive control(MPC) Event-triggered strategy Multi-UAV

A dynamic signal coordination control method for urban arterial roads and its application

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Frontiers of Information Technology & Electronic Engineering 2016年第9期17卷 907-918页

作者： Guo-jiang SHEN Yong-yao YANG College of Computer Science and Technology Zhejiang University of Technology Zhejiang Zheda Supcon Information Technique Co. Ltd.

We propose a novel dynamic traffic signal coordination method that takes account of the special traffic flow characteristics of urban arterial roads. The core of this method includes a control area division module and a signal coordination control module. Firstly, we analyze and model the influences of segment distance, traffic flow density, and signal cycle time on the correlation degree between two neighboring intersections. Then, we propose a fuzzy computing method to estimate the correlation degree based on a hierarchical structure and a method to divide the control area of urban arterial roads into subareas based on correlation degrees. Subarea coordination control arithmetic is used to calculate the public cycle time of the control subarea, up-run offset and down-run offset of the section, and the split of each intersection. An application of the method in Shaoxing City, Zhejiang Province, China shows that the method can reduce the average travel time and the average stop rate effectively.

关键词： Urban arterial control subarea coordination control Correlation degree Fuzzy logic Intelligent transportation

Study on City Area Traffic coordination control Based on Linear Programming

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Study on City Area Traffic Coordination Control Based on Lin...

A coordination control Method for Stationkeeping of Regressive Orbit Regional Coverage Satellite Constellation

2009中国控制与决策会议

作者： Xi-rui Yang~(1,2) Dian-hai Wang~1 1.College of Transportation,Jilin University,Changchun,China,130022 2.Automobile Management Institute,Bengbu,P.R.China,233011

＜正＞A traffic network of a city area is considered in this *** paper presents a linear program which is based on optimization from a purely mathematical point of view to solve the problem of optimizing city area traffic *** phase sequence of each intersection is *** identification of the optimal phase relationship between all intersections and duration for the signal phases are combined into one problem in this *** particular,we consider a group of signalized intersections in a city area which have common *** analyse the network coordination problem and given splits for each phase,determine offsets for all signals.

关键词： Traffic coordination control linear Programming Arterial Bandwidth

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A Coordination Control Method for Stationkeeping of Regressi...

Distributed Fault-Tolerant control of Uncertain Multi-Agent Systems with Connectivity Maintenance

第25届中国控制会议

作者： Xiang Junhua , Zhang Yulin Institute of Aerospace and Material Engineering, National University of Defense Technology, Changsha 410073 Space Technology Research Center, Tsinghua University, Beijing 100084

＜正＞Studied the characteristic of the regressive orbit and its application in the regional coverage constellation, and designed a regional coverage constellation. Through studying on the equation of motion of substellar track, it may realize the correction about the deviation of the substellar track through controlling the deviation of ascending node right ascension, and through controlling the deviation of phase in the along-track direction, it may realize the correction about the relative positions between the regional coverage constellation satellites Using the deviation of semi-major axis and inclination have realized to control the rate of change of the deviation of ascending node right ascension and phase together. Simulation results for the regional coverage constellation confirm that the control method is valid.

关键词： Regressive Orbit Regional Coverage Satellite Constellation Station-keeping coordination control

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Journal of Systems Science & Complexity 2024年第1期37卷 40-62页

作者： XING Xueyan HU Guoqiang Continental-NTU Corporate Lab Nanyang Technological UniversitySingapore 639798Singapore Continental-NTU Corporate Lab and the School of Electrical and Electronic Engineering Nanyang Technological UniversitySingapore 639798Singapore

In this paper,a distributed cooperative control protocol is presented to deal with actuator failures of multi-agent systems in the presence of connectivity *** the developed strategy,each agent can track the reference trajectory of the leader in the presence of actuator failures,disturbances and *** connectivity of the multi-agent system can always be ensured during the control *** achieve the aforementioned control objectives,a potential function is introduced to the distributed adaptive fault-tolerant control algorithm to preserve the initial connected network among the *** uncertainty of the multi-agent system,which is allowed to be described by discontinuous functions,is approximated and compensated using the fuzzy logic *** asymptotic stability of the closed-loop system is demonstrated through the use of Cellina’s approximate selection theorem of nonsmooth *** to the developed adaptive laws,the upper bound of the disturbance is allowed to be uncertain,which facilitates the implementation of the control ***,simulation results are provided to verify the effectiveness of the proposed control scheme.

关键词： Actuator failure connectivity maintenance coordination control uncertainties

Motion control and Motion coordination of Bionic Robotic Fish： A Review

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Journal of Bionic Engineering 2018年第4期15卷 579-598页

作者： Junzhi Yu Ming Wang Huifang Dong Yanlu Zhang Zhengxing Wu State Key Laboratory of Management and control for Complex Systems Institute of Automation Chinese Academy of Sciences Beijing 100190 China School of Information and Electrical Engineering Shandong Jianzhu University Jinan 250101 China

Fish＇s outstanding motion and coordination performance make it an excellent source of inspiration for scientists and engineers aiming to design and control next-generation autonomous underwater vehicles within the framework of bionics. This paper offers a general review of the current status of bionic robotic fish, with particular emphasis on the hydrodynamic modeling and testing, kinematic modeling and control, learning and optimization, as well as motion coordination control. Among these aspects, representative studies based on ideas and concepts inspired from fish motion and coordination are discussed. At last, the major challenges and the future research directions are addressed in the context of integration of various research streams from ichthyologic, hydrodynamic, mechanical, electronic, control, and artificial intelligence. Further development of bionic robotic fish can be utilized to execute some specific missions in complex underwater environments, where operations are unsafe or impractical for divers or conventional underwater vehicles.

关键词： bionic robotic fish motion control coordination control fish swimming learning and optimization