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Distributed consensus algorithm for networked Euler-Lagrange systems with self-delays and uncertainties

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Journal of Systems Engineering and Electronics 2012年第6期23卷 898-905页

作者： Xu Zhu dianguo Yan Yaohong Qu School of Automation Northwestern Polytechnical University Xi'an 710129 E R. China

A distributed coordinated consensus problem for multiple networked Euler-Lagrange systems is studied. The communication between agents is subject to time delays, unknown parameters and nonlinear inputs, but only with their states available for measurement. When the communication topology of the system is connected, an adaptive control algorithm with selfdelays and uncertainties is suggested to guarantee global full-state synchro-nization that the difference between the agent＇s positions and ve-locities asymptotically converges to zero. Moreover, the distributed sliding-mode law is given for chaotic systems with nonlinear inputs to compensate for the effects of nonlinearity. Finally, simulation results show the effectiveness of the proposed control algorithm.

关键词： networked multi-agent system Euler-Lagrange (EL)system distributed consensus algorithm Lyapunov stability self-delay uncertainty.

EXPONENTIAL ESTIMATES FOR STOCHASTIC DELAY EQUATIONS WITH NORM-BOUNDED UNCERTAINTIES

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Journal of Systems Science & Complexity 2009年第2期22卷 324-332页

作者： Hongchu WANG Shigeng HU School of Mathematics Science South China Normal University Guangzhou 510631 China. Department of Mathematics Huazhong University of Science and Technology Wuhan 430074 China.

This paper presents the sufficient conditions for the exponential stability of linear or semi-linear stochastic delay equations with time-varying norm bounded parameter ***-tial estimates for the solutions are also obtained by using a modified Lyapunov-Krasovski *** conditions can be tested numerically using interior point algorithms.

关键词： Exponential estimates time delay uncertainty.

Multi-timescale Energy Sharing with Grid-BESS Capacity Rental Considering Uncertainties

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CSEE Journal of Power and Energy Systems 2023年第4期9卷 1326-1336页

作者： Bo Wang Cuo Zhang Chaojie Li Xiangjing Su Zihang Qiu Zhao Yang Dong the College of Energy and Electrical Engineering Hohai UniversityNanjing 211100China. the School of Electrical Engineering and Telecommunications The University of New South WalesSydneyNSW 2052Australia School of Electrical Engineering Shanghai University of Electric PowerShanghaiChina. School of Electrical and Electronic Engineering Nanyang Technological University 639798Singapore.

The growing number of distributed energy resources(DERs)in distribution networks brings new opportunities for local energy *** paper proposes a multi-timescale en-ergy sharing approach among DER aggregators and distribution system operators(DSOs)considering grid-battery energy storage system(BESS)capacity rental and network *** energy sharing coordinator is created to manage the energy sharing with price *** an hour-ahead stage,the buying/selling energy and required grid-BESS rental capacity are optimally determined by the aggregators while the network operation is robustly considered by the *** addition to renewable generation and loads,the power exchanges of the aggregators are treated as *** during each hour,15-min-ahead energy transaction and controllable DERs are optimized to track uncertainty.*** uncertainties in the aggregators and the DSO are addressed by stochastic and robust optimization methods,*** efficiently solve the proposed energy sharing problem,a distributed solution algorithm with step length control and step reduction techniques is *** simulation results verify the high efficiency of the proposed energy sharing *** Terms-Battery capacity rental,distributed solution algorithm,energy sharing,optimization,uncertainty.

关键词： Battery capacity rental distributed solution algorithm energy sharing optimization uncertainty.

Generalization of the linguistic aggregation operator and its application in decision making

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Journal of Systems Engineering and Electronics 2011年第4期22卷 593-603页

作者： Jose M. Merigo Anna M. Gil-Lafuente Ligang Zhou Huayou Chen Department of Business Administration University of Barcelona Av. Diagonal 690 08034 Barcelona Spain School of Mathematical Science Anhui University Hefei 230601 P. R. China

A generalization of the linguistic aggregation functions （or operators） is presented by using generalized and quasiarithmetic means. Firstly, the linguistic weighted generalized mean （LWGM） and the linguistic generalized ordered weighted averaging （LGOWA） operator are introduced. These aggregation functions use linguistic information and generalized means in the weighted average （WA） and in the ordered weighted averaging （OWA） function. They are very useful for uncertain situations where the available information cannot be assessed with numerical values but it is possible to use linguistic assessments. These aggregation operators generalize a wide range of aggregation operators that use linguistic information such as the linguistic generalized mean （LGM）, the linguistic OWA （LOWA） operator and the linguistic or- dered weighted quadratic averaging （LOWQA） operator. We also introduce a further generalization by using quasi-arithmetic means instead of generalized means obtaining the quasi-LWA and the quasi-LOWA operator. Finally, we develop an application of the new approach where we analyze a decision making problem regarding the selection of strategies.

关键词： linguistic aggregation function linguistic orderedweighted averaging (OWA) operator generalized mean linguis-tic decision making strategic decision making uncertainty.

Chaos and Nonlinear Feedback Control of the Arch Micro-Electro-Mechanical System

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Journal of Systems Science & Complexity 2018年第6期31卷 1510-1524页

作者： LUO Shaohua LI Shaobo TAJADDODIANFAR Farid Key Laboratory of Advanced Manufacturing Technology Ministry of EducationGuizhou UniversityGuiyang 550025China Schbol of Mechanical Engineering Guizhou UniversityGuiyang 550025China. Department of Mechanical Engineering Erik Jonsson School of Engineering and Computer ScienceThe Uni-versity of Texas at DallasRichardson TX 75080USA.

This paper addresses a nonlinear feedback control problem for the chaotic arch micro- electro-mechanical system with unknown parameters,immeasurable states and partial state-constraint subjected to the distributed electrostatic *** reflect inherent properties and design controller, the phase diagrams,bifurcation diagram and Poincare section are presented to investigate the nonlinear *** authors employ a symmetric barrier Lyapunov function to prevent violation of constraint when the arch micro-electro-mechanical system faces some *** RBF neural network system integrating with an update law is adopted to estimate unknown function with arbitrarily small error. To eliminate chaotic oscillation,a neuro-adaptive backstepping control scheme fused with an extended state tracking differentiator and an observer is constructed to lower requirements on measured states and precise system ***,introducing an extended state tracking differentiator avoids repeated derivative for the virtual control signal associated with conventional ***,simulation results are presented to illustrate feasibility of the proposed scheme.

关键词： Arch micro-electro-mechanical system chaos suppression Neuro-adaptive backstepping nonlinear feedback control uncertainty.

New probabilistic transformation of imprecise belief structure

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Journal of Systems Engineering and Electronics 2011年第5期22卷 721-729页

作者： Lifang Hu You He Xin Guan Deqiang Han Yong Deng Research Institute of Information Fusion Naval Aeronautical and Astronautical University Yantai 264001 E R. China Navy Armament Academy Beijing 102249 E R. China College of Electronic Science and Engineering National University of Defense Technology Changsha 410073 E R. China Institute of Integrated Automation Xi＇an Jiaotong University Xi＇an 710049 E R. China School of Electronics and Information Technology Shanghai Jiaotong University Shanghai 200240 E R. China

The case when the source of information provides precise belief function/mass, within the generalized power space, has been studied by many people. However, in many decision situations, the precise belief structure is not always available. In this case, an interval-valued belief degree rather than a precise one may be provided. So, the probabilistic transformation of imprecise belief function/mass in the generalized power space including Dezert-Smarandache （DSm） model from scalar transformation to sub-unitary interval transformation and, more generally, to any set of sub-unitary interval transformation is provided. Different from the existing probabilistic transformation algorithms that redistribute an ignorance mass to the singletons involved in that ignorance pro- portionally with respect to the precise belief function or probability function of singleton, the new algorithm provides an optimization idea to transform any type of imprecise belief assignment which may be represented by the union of several sub-unitary （half-） open intervals, （half-） closed intervals and/or sets of points belonging to [0,1]. Numerical examples are provided to illustrate the detailed implementation process of the new probabilistic transformation approach as well as its validity and wide applicability.

关键词： pignistic probability transformation generalized power space interval value information fusion uncertainty.

Disassembly Sequence Planning:A Survey

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IEEE/CAA Journal of Automatica Sinica 2021年第7期8卷 1308-1324页

作者： Xiwang Guo MengChu Zhou Abdullah Abusorrah Fahad Alsokhiry Khaled Sedraoui the College of Computer and Communication Engineering Liaoning Shihua UniversityFushun 113001China the Department of Electrical and Computer Engineering New Jersey Institute of TechnologyNewark NJ 07102 USA the Center of Research Excellence in Renewable Energy and Power Systems King Abdulaziz UniversityJeddah 21481Saudi Arabia the Department of Electrical and Computer Engineering Faculty of Engineeringand the Center of Research Excellence in Renewable Energy and Power SystemsKing Abdulaziz UniversityJeddah 21481Saudi Arabia

It is well-recognized that obsolete or discarded products can cause serious environmental pollution if they are poorly be *** contain reusable resource that can be recycled and used to generate desired economic ***,performing their efficient disassembly is highly important in green manufacturing and sustainable economic *** typical examples are electronic appliances and electromechanical/mechanical *** paper presents a survey on the state of the art of disassembly sequence *** can help new researchers or decision makers to search for the right solution for optimal disassembly *** reviews the disassembly theory and methods that are applied for the processing,repair,and maintenance of obsolete/discarded *** paper discusses the recent progress of disassembly sequencing planning in four major aspects:product disassembly modeling methods,mathematical programming methods,artificial intelligence methods,and uncertainty.*** survey should stimulate readers to be engaged in the research,development and applications of disassembly and remanufacturing methodologies in the Industry 4.0 era.

关键词： Artificial intelligence(AI) disassembly sequence planning(DSP) intelligent optimization modeling methods multiobjective optimization single-objective optimization uncertainty.

A MULTI-PERIOD PRICING AND INVENTORY CONTROL MODEL

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Journal of Systems Science & Complexity 2010年第2期23卷 249-260页

作者： Juliang ZHANG Jian CHEN Department of Logistics Management School of Economics and Management Beijing Jiaotong UniversityBeijing 100044 China. Department of Management Science and Engineering School of Economics and Management Tsinghua University Beijing 100084 China.

The authors analyze a finite horizon,single product,period review model in which pricingand inventory decisions are made *** in different periods are random variablesthat are independent of each other and their distributions depend on the product *** andordering decisions are made at the beginning of each period and all shortage are *** is a convex function of the amount *** objective is to find an inventory and pricing policymaximizing expected discounted profit over the finite *** authors characterize the structure ofthe optimal combined pricing and inventory strategy for this ***,the authors demonstratehow the profit-to-go function,order up to level,reorder point and optimal price change with respectto state and time.

关键词： Convex cost function planning horizon pricing stochastic inventory management uncertainty.

The Grid Search Algorithm of Tectonic Stress Tensor Based on Focal Mechanism Data and Its Application in the Boundary Zone of China, Vietnam and Laos

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Journal of Earth Science 2016年第5期27卷 777-785页

作者： Yongge Wan Shuzhong Sheng Jichao Huang Xiang Li Xin Chen Institute of Disaster Prevention Sanhe 065201 China Earthquake Administration of the Guangxi Autonomous Region Nanning 530022 China

Stress field plays a key role in geodynamics. In this study, an algorithm to determine the stress tensor and its confidence range from focal mechanism data by using grid search method was proposed. The experiment uses artificial focal mechanism data which were generated by extensional, compression and strike-slip stress regime and different level of noise, shows that the precision of the estimated stress tensor based on this algorithm is greatly improved compared with traditional algorithms. This algorithm has three advantages：（1） The global optimal solution of the stress tensor is determined by fine grid search of 1o×1o×1o×0.01 and local minimum value is avoided; （2） precision of focal mechanism data can be considered, i.e., different weight of the focal mechanism data contributes differently to the process of determining stress tensor; （3） the confidence range of the determined stress tensor can be obtained by using F-test. We apply this algorithm in the boundary zone of China, Vietnam and Laos, and obtain the stress field with SSE-NNW compressive stress direction and NEE-SWW extensional stress direction. The stress ratio is 0.6, which shows that the eigen values of the stress tensor are nearly in arithmetic sequence. The stress field in this region is consistent with the left-lateral strike slip of the Dienbien-Lauangphrabang arc fault. The result will be helpful in studying the geological dynamic process in this region.

关键词： stress tensor grid search focal mechanism uncertainty.