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Consensus Robust Output Regulation of Discrete-time Linear Multi-agent Systems

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IEEE/CAA Journal of Automatica Sinica 2014年第2期1卷 204-209页

作者： Hongjing Liang huaguang zhang Zhanshan Wang Junyi Wang School of Information Science and Engineering Northeastern University State Key Laboratory of Synthetical Automation for Process Industries (Northeastern University)

This paper deals with consensus robust output regulation of discrete-time linear multi-agent systems under a directed interaction topology. The digraph is assumed to contain a spanning tree. Every agent or subsystem is identical and uncertain, but subsystems have different external disturbances. Based on the internal model and general discrete-time algebraic Riccati equation, a distributed consensus protocol is proposed to solve the regulator problem. A numerical simulation demonstrates the effectiveness of the proposed theoretical results.

关键词： Multi-agent systems Robustness Eigenvalues and eigenfunctions Protocols Mathematical model Symmetric matrices Topology

Distributed Optimal Co-multi-microgrids Energy Management for Energy Internet

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IEEE/CAA Journal of Automatica Sinica 2016年第4期3卷 357-364页

作者： Bonan Huang Yushuai Li huaguang zhang Qiuye Sun College of Information Science and Engineering Northeastern University IEEE

Unlike conventional power systems, the upcoming energy internet U+0028 EI U+0029 emphasizes comprehensive utilization of energy in the whole power system by coordinating multi-microgrids, which also brings new challenge for the energy management. To address this issue, this paper proposes a novel consensus-based distributed approach based on multi-agent framework to solve the energy management problem of the energy internet, which only requires local information exchange among neighboring agents. Correspondingly, two consensus algorithms are presented, one of which drives the incremental cost of each distributed generator U+0028 DG U+0029 converge to the state of the leader agent-energy router, and the other one is used to estimate the global power mismatch, which is a first-order average consensus algorithm modified by a correction term. In addition, in order to meet the supply-demand balance, an effective control strategy for the energy router is proposed to accurately calculate the power exchange between the microgrid and the main grid. Finally, simulation results within a 7-bus test system are provided to illustrate the effectiveness of the proposed approach. © 2014 Chinese Association of Automation.

关键词： Energy management Internet Multi agent systems Optimization

Distributed Formation Control of UAVs for Circumnavigating a Moving Target in Three-Dimensional Space

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Guidance, Navigation and Control 2021年第3期1卷 76-97页

作者： Yanhong Luo Ao Bai huaguang zhang School of Information Science and Engineering Northeastern University Shenyang LiaoningP.R.China

In this paper,a novel formation control strategy is proposed to address the target tracking and circumnavigating problem of multi-UAV ***,two sets of definitions,space angle definition and space vector definition,are presented in order to describe the flight state and construct the desired relative ***,the relative kinematic model between the UAV and the moving target is *** distributed control law is constructed by using dynamic feedback linearization so as to realize the tracking and circumnavigating control with the desired velocity,circing radius and relative angular ***,the exponential stability of the closed-loop system is further guaranteed by properly choosing some corresponding parameters based on the Lyapunov ***,the numerical simulation is caried out to verify the effectiveness of the proposed control method.

关键词： Formation control target tracking and circumnavigating formation dynamic feedback linearization distributed control exponential stability

Construction of Energy Hub Model and Optimal Scheduling of Energy Internet 36

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Construction of Energy Hub Model and Optimal Scheduling of E...

State-of-the-art review on frequency response of wind power plants in power systems

第36届中国控制会议

作者： Lei Meng Dongsheng Yang Yunhe Sun huaguang zhang College of Information Science and Engineering Northeastern University

ISBN: (纸本)9781538629185

This paper studies the construction and optimal scheduling issues of energy internet power flow,considering electrical,natural gas and heating ***,a new data based modeling method of energy hub is proposed,which is much simpler than mechanism based *** the working pattern of energy internet is proposed in this paper,and based on that,the hybrid energy optimization problems is ***,by constructing an integrated energy internet which contains the three kinds of energy and other distributed energy devices like CHP unit,compressors and renewable energy generators etc.,the reasonability of method put forward in this paper is verified.

关键词： Energy internet multi-energy energy hub optimal scheduling

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Journal of Modern Power Systems and Clean Energy 2018年第1期6卷 1-16页

作者： Ziping WU Wenzhong GAO Tianqi GAO Weihang YAN huaguang zhang Shijie YAN Xiao WANG Department of Electrical and Computer Engineering University of Denver School of Information Science and Engineering Northeastern University

With an increasing penetration of wind power in the modern electrical grid, the increasing replacement of large conventional synchronous generators by wind power plants will potentially result in deteriorated frequency regulation performance due to the reduced system inertia and primary frequency response. A series of challenging issues arise from the aspects of power system planning,operation, control and protection. Therefore, it is valuable to develop variable speed wind turbines(VSWTs) equipped with frequency regulation capabilities that allow them to effectively participate in addressing severe frequency contingencies. This paper provides a comprehensive surveyon frequency regulation methods for VSWTs. It fully describes the concepts, principles and control strategies of prevailing frequency controls of VSWTs, including future development trends. It concludes with a performance comparison of frequency regulation by the four main types of wind power plants.

关键词： Wind power plant Inertial response Primary frequency control Automatic generation control(AGC) Variable speed wind turbine(VSWT)

On the Algorithm of Analyzing the Features of Magnetic Flux Leakage Signal for Pipeline Defect Based on PCA 36

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On the Algorithm of Analyzing the Features of Magnetic Flux ...

Abnormal Detection Method of Refined Products Pipeline Working State Based on Multi-stage Decision 36

第36届中国控制会议

作者： Yun Sun Jinhai Liu huaguang zhang Tingting Wang Li Zheng College of Information Science and Engineering Northeastern University Beijing Huahang Radio Measurement&Research Institute

ISBN: (纸本)9781538629185

Magnetic flux leakage detection will generate a huge amount of data on pipeline surface defects for ***,in order to improve the accuracy and efficiency of defect detection,it is significant to find out the appropriate method of extracting and analyzing the defect *** thesis mainly studies and analyzes the magnetic flux leakage data detected from the pipelines,and mainly realize the analysis of defect signal *** selection of defect signal features is completed by finding the feature quantity related to the length,width and depth of the defect through control variate *** the selection of defect signal features,a sample library for defect feature selection is *** algorithm is simulated based on principal component analysis,which is used to optimize the defect features.

关键词： MFL feature extraction characteristic quantity PCA algorithm simulation

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Abnormal Detection Method of Refined Products Pipeline Worki...

H∞ control for uncertain Markovian jump systems with mode-dependent mixed delays

第36届中国控制会议

作者： Xuguang Hu Zhiqiang Yao Dazhong Ma Qiuye Sun huaguang zhang College of Information Science and Engineering Northeastern University China Academy of Safety Science and Technology

ISBN: (纸本)9781538629185

An abnormal detection method is proposed for promotion of efficiency of state assessment because pipeline working state is judged by equipments status and oil *** on pipeline intellectualization,the pipeline data model is built rely on pipeline ***,the spectral analysis of random matrix is used to analyze data matrix containing multivariable time *** distance indicator between eigenvalues of data matrix and zero is constructed in order to detect the abnormal state of *** the abnormal state happened,the pressure data model is used to decide if the pipeline working state is *** to the proposed data matrix processing method,the abnormal state of pipeline could be found *** simulations show the effective and good performance of the proposed method.

关键词： Refined Products Pipeline Abnormal Detection Spectral Analysis

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Progress in Natural Science:Materials International 2008年第3期18卷 309-314页

作者： Yingchun Wang, huaguang zhang School of Information Science and Engineering, Northeastern University, Shenyang 110004, China School of Information Science and Engineering Northeastern University Shenyang 110004 China

We study the problem of H∞control for a class of Markovian jump systems with norm-bounded parameter uncertainties and mode- dependent mixed delays including discrete delays and distributed delays in this paper. Our aim is to present a new delay-dependent con- trol approach such that the resulting closed-loop system is robust mean-square (MS) exponentially stable and satisfies a prescribed H∞performance level, irrespective of the parameter uncertainties. Such delay-dependent approach does not require system transformation or free-weighting matrix. A numerical example shows that the results are less conservative and more effective.

关键词： H1 control Markovian jump Mixed delays Delay-dependent criterion

Robust adaptive fuzzy control scheme for nonlinear system with uncertainty

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控制理论与应用（英文版） 2006年第3期4卷 209-216页

作者： Mingjun zhang huaguang zhang School of Information Science and Engineering Northeastern University Shenyang Liaoning 110004 China Department of electrical Engineering Beihua University Jilin Jilin 132021 China

In this paper, a robust adaptive fuzzy control scheme for a class of nonlinear system with uncertainty is proposed. First, using prior knowledge about the plant we obtain a fuzzy model, which is called the generalized fuzzy hyperbolic model （GFHM）. Secondly, for the case that the states of the system are not available an observer is designed and a robust adaptive fuzzy output feedback control scheme is developed. The overall control system guarantees that the tracking error converges to a small neighborhood of origin and that all signals involved are uniformly bounded. The main advantages of the proposed control scheme are that the human knowledge about the plant under control can be used to design the controller and only one parameter in the adaptive mechanism needs to be on-line adjusted.

关键词： Fuzzy control Nonlinear systems Generalized fuzzy hyperbolic model Adaptive control Observer