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IEEE Conference on Decision and control

作者： Simon K. Niederländer research group Autonomous Systems and Control Siemens Technology Center Garching Friedrich-Ludwig-BauerStr 3 Garching Germany

ISBN: (数字)9798350316339

ISBN: (纸本)9798350316346

In a real Hilbert space setting, we investigate the asymptotic behavior of the solutions of the nonautonomous Arrow-Hurwicz differential system. We show that its solutions weakly converge in average towards a saddle point of some limiting closed convex-concave bifunction provided that the associated gap function vanishes sufficiently fast. If, in addition, the limiting saddle function verifies a strict convexity-concavity condition, we find that the solutions of the nonautonomous Ar-row-Hurwicz differential system not only converge in an ergodic sense, but in fact admit a weak limit. Numerical experiments illustrate our theoretical findings.

关键词： Limiting Hilbert space

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A Linear Parameter-Varying Approach to Data Predictive control

arXiv

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arXiv 2023年

作者： Verhoek, Chris Berberich, Julian Haesaert, Sofie Tóth, Roland Abbas, Hossam S. The Control Systems Group Eindhoven University of Technology Netherlands The University of Stuttgart Institute for Systems Theory and Automatic Control Germany The Institute for Electrical Engineering in Medicine Universität zu Lübeck Germany The Systems and Control Lab Institute for Computer Science and Control Hungary

By means of the linear parameter-varying (LPV) Fundamental Lemma, we derive novel data-driven predictive control (DPC) methods for LPV systems. In particular, we present output-feedback and state-feedback-based LPV-DPC methods with terminal ingredients, which guarantee exponential stability and recursive feasibility. We provide methods for the data-based computation of these terminal ingredients. Furthermore, an in-depth analysis of the application and implementation aspects of the LPV-DPC schemes is given, including application for nonlinear systems and handling noisy data. We compare and demonstrate the performance of the proposed methods in a detailed simulation example involving a nonlinear unbalanced disc system. © 2023, CC BY-NC-SA.

关键词： Predictive control systems

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Multivariable control of ac/ac modular multilevel converters under square wave operation using Fourier expansion

Multivariable control of ac/ac modular multilevel converters...

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International (EPE-PEMC) Power Electronics and Motion control Conference

作者： Victor Daniel Reyes Dreke Ygor Pereira Marca Kaveh Pouresmaeil Maurice Roes Mircea Lazar Department of Electrical Engineering Control Systems Group Eindhoven University of Technology The Netherlands Department of Electrical Engineering Electromechanics and Power Electronics Group Eindhoven University of Technology The Netherlands

ISBN: (数字)9798350385236

ISBN: (纸本)9798350385243

Nowadays, modular multilevel converters (MMCs) with AC voltage output, i.e., AC/AC MMCs, have emerged as a promising alternative for grid-connected applications. Among them, MMCs operating under square waves, i.e., AC/SQR MMCs, present a unique advantage, i.e., having lower pulsating power and fewer modules. However, tracking nonlinear periodic references, i.e., the square-shaped signals, imposes some challenges when designing the MMC controller. This paper proposes a multivariable controller, i.e., static feedback gain, designed to regulate the currents of the AC/SQR MMC. To address the nonlinear dynamics resulting from square-shaped signals, we use the Fourier expansion to create a linear model of the system. Employing the obtained model, a linear matrix inequality (LMI) is solved for synthesizing a controller that guarantees exponential convergence and constraint satisfaction inside a domain of attraction. Simulation validation is conducted on a high-fidelity model built on Simulink/PLECS of a downscaled MMC prototype dedicated to ultra-fast charging of electric vehicles. Finally, we show the efficacy of the controller in keeping low pulsating power, i.e., 44.4% lower than the AC/AC MMCs.

关键词： Multilevel converters Prototypes Power system stability Reliability engineering Stability analysis Power electronics Nonlinear dynamical systems Linear matrix inequalities Motion control Thermal stability

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Feasibility Evaluation and Application Practice of Distributed Photovoltaic Power Generation in Large Commercial Buildings 17th

Feasibility Evaluation and Application Practice of Distribut...

引用

17th Annual Conference of China Electrotechnical Society, CES 2022

作者： Sun, Liucun Lou, Zhongkai Li, Jingjing Su, Weijiang China Green Development Investment Group Co. Ltd. Beijing100010 China Key Laboratory for Intelligent Control and Decision on Complex Systems School of Automation Beijing Institute of Technology Beijing100029 China

ISBN: (纸本)9789819904075

Large commercial complex projects have the characteristics of large roof area and high electricity price, and the development of distributed photovoltaic power generation has great potential. In this paper, a feasibility evaluation model of distributed photovoltaic power generation in large commercial buildings is established from the aspects of solar energy resources, power generation, economics and environmental benefits. A commercial complex photovoltaic project in Jinan is used as an example. In the case of fully considering the project operating cost and environmental benefits, the feasibility of the project under different power consumption modes is analyzed. The research results show that the economy of large-scale commercial distributed photovoltaic power generation projects in class III solar resource areas such as Jinan is directly related to the power consumption mode. When the "spontaneous self-use" mode is adopted, the economic benefits of the project are good and the feasibility is strong;When the "excess electricity goes into the power grid" mode is adopted, the economic benefits gradually deteriorate with the increase of the proportion into the power grid, but considering the environmental protection benefits of photovoltaic power generation projects, it is still feasible;When the "full the power goes into the power grid" mode is adopted, the economic benefit is poor, and the project is basically not feasible. © 2023, Beijing Paike Culture Commu. Co., Ltd.

关键词： Electric power utilization

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Multivariable control of modular multilevel converters with convergence and safety guarantees

arXiv

引用

arXiv 2024年

作者： Dreke, Victor Daniel Reyes Marca, Ygor Pereira Roes, Maurice Lazar, Mircea Control Systems Group Department of Electrical Engineering Eindhoven University of Technology Netherlands Electromechanics and Power Electronics Group Department of Electrical Engineering Eindhoven University of Technology Netherlands

Well-designed current control is a key factor in ensuring the efficient and safe operation of modular multilevel converters (MMCs). Even though this control problem involves multiple control objectives, conventional current control schemes are comprised of independently designed decoupled controllers, e.g., proportional-integral (PI) or proportional-resonant (PR). Due to the bilinearity of the MMC dynamics, tuning PI and PR controllers so that good performance and constraint satisfaction are guaranteed is quite challenging. This challenge becomes more relevant in an AC/AC MMC configuration due to the complexity of tracking the single-phase sinusoidal components of the MMC output. In this paper, we propose a method to design a multivariable controller, i.e., a static feedback gain, to regulate the MMC currents. We use a physics-informed transformation to model the MMC dynamics linearly and synthesise the proposed controller. We use this linear model to formulate a linear matrix inequality that computes a feedback gain that guarantees safe and effective operation, including (i) limited tracking error, (ii) stability, and (iii) meeting all constraints. To test the efficacy of our method, we examine its performance in a direct AC/AC MMC simulated in Simulink/PLECS and in a scaled-down AC/AC MMC prototype to investigate the ultra-fast charging of electric vehicles. Copyright © 2024, The Authors. All rights reserved.

关键词： Linear matrix inequalities

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On the Regret of Recursive Methods for Discrete-Time Adaptive control with Matched Uncertainty

On the Regret of Recursive Methods for Discrete-Time Adaptiv...

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IEEE Conference on Decision and control

作者： Aren Karapetyan Efe C. Balta Anastasios Tsiamis Andrea Iannelli John Lygeros Automatic Control Laboratory Swiss Federal Institute of Technology (ETH Zürich) Zürich Switzerland Control and Automation Group inspire AG Zürich Switzerland Automatic Control Laboratory Institute for Systems Theory and Automatic Control University of Stuttgart Stuttgart Germany

ISBN: (数字)9798350316339

ISBN: (纸本)9798350316346

Continuous-time adaptive controllers for systems with a matched uncertainty often comprise an online parameter estimator and a corresponding parameterized controller to cancel the uncertainty. However, such methods are often impossible to implement directly, as they depend on an unobserved estimation error. We consider the equivalent discrete-time setting with a causal information structure, and propose a novel, online proximal point method-based adaptive controller, that under a sufficient excitation (SE) condition is asymptotically stable and achieves finite regret, scaling only with the time required to fulfill the SE. We show the same also for the widely-used recursive least squares with exponential forgetting controller under a stronger persistence of excitation condition.

关键词： Estimation error Uncertainty Costs Noise Minimization control systems Adaptive control

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Industrial Scenario of Renewable Energy-Based Electromobility 3rd

Industrial Scenario of Renewable Energy-Based Electromobilit...

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3rd International Conference on Energy systems, Drives and Automations, ESDA 2020

作者： Szymanski, Jerzy Zurek-Mortka, Marta Faculty of Transport Electrical Engineering and Computer Science Kazimierz Pulaski University of Technology and Humanities Radom Poland Department of Control Systems Lukasiewicz Research Network Institute for Sustainable Technology Radom Poland

ISBN: (纸本)9789811672736

The article presents the concept of a hybrid network topology in the enterprises with the use of a solar power plant and energy storage as well as a drive frequency converter for charging of transportation battery of wheels vehicles and powering of electric caterpillar mining machines. Two important functionalities of the drive frequency converter as a unidirectional EV battery charger and for powering electric motors are presented. The obtained results of the simulation and experimental tests of the presented model confirm the possibility of controlling the DC current value of connected to drive frequency converter of the diode rectifier unit charging the EV battery. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Solar energy

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Steps Toward Industry 5.0:Building“6S”Parallel Industries With Cyber-Physical-Social Intelligence

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IEEE/CAA Journal of Automatica Sinica 2023年第8期10卷 1692-1703页

作者： Xingxia Wang Jing Yang Yutong Wang Qinghai Miao Fei-Yue Wang Aijun Zhao Jian-Ling Deng Lingxi Li Xiaoxiang Na Ljubo Vlacic School of Artificial Intelligence University of Chinese Academy of SciencesBeijing 100049China State Key Laboratory of Multimodal Artificial Intelligence Systems Institute of AutomationChinese Academy of SciencesBeijing 100190China IEEE Macao University of Science and Technology Macao 999078China Beijing Engineering Research Center of Intelligent Systems and Technology Chinese Academy of SciencesBeijing 100098 State Key Laboratory for Management and Control of Complex Systems Chinese Academy of SciencesBeijing 100190China North Automatic Control Technology Institute Taiyuan 030006China China Huaneng Group Co. Ltd.Beijing 100031China Department of Electrical and Computer Engineering Indiana University-Purdue University Indianapolis(IUPUI)IndianapolisIN 46202 USA Department of Engineering University of CambridgeCambridgeCB21PZUK School of Engineering and Built Environment Griffith UniversityGold CoastQLD 4222Australia

Very recently,intensive discussions and studies on Industry 5.0 have sprung up and caused the attention of researchers,entrepreneurs,and policymakers from various sectors around the ***,there is no consensus on why and what is Industry 5.0 *** this paper,we define Industry 5.0from its philosophical and historical origin and evolution,emphasize its new thinking on virtual-real duality and human-machine interaction,and introduce its new theory and technology based on parallel intelligence(PI),artificial societies,computational experiments,and parallel execution(the ACP method),and cyber-physical-social systems(CPSS).Case studies and applications of Industry 5.0 over the last decade have been briefly summarized and analyzed with suggestions for its future *** believe that Industry 5.0 of virtual-real interactive parallel industries has great potentials and is critical for building smart *** are outlined to ensure a roadmap that would lead to a smooth transition from CPS-based Industry 4.0 to CPSS-based Industry 5.0 for a better world which is Safe in physical spaces,S ecure in cyberspaces,Sustainable in ecology,Sensitive in individual privacy and rights,Service for all,and Smartness of all.

关键词： ACP artificial intelligence CPS CPSS Industry 4.0 Industry 5.0 parallel industries parallel intelligence

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A Time-Varying Matrix Solution to the Brockett Decentralized Stabilization Problem

A Time-Varying Matrix Solution to the Brockett Decentralized...

引用

IEEE Conference on Decision and control

作者： Zhiyong Sun Department of Electrical Engineering Eind-hoven Control Systems Group University of Technology Eindhoven The Netherlands

This paper proposes a time-varying matrix solution to the Brockett stabilization problem. The key matrix condition shows that if the system matrix product CB is a Hurwitz H-matrix, then there exists a time-varying diagonal gain matrix K(t) such that the MIMO minimum-phase linear system with decentralized output feedback is exponentially convergent. The proposed solution involves several analysis tools such as diagonal stabilization properties of special matrices, stability conditions of diagonal-dominant linear systems, and solution bounds of linear time-varying integro-differential systems. A review of other solutions to the general Brockett stabilization problem (for a general unstructured time-varying gain matrix K(t)) and a comparison study are also provided.

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Universal Approximation of Flows of control systems by Recurrent Neural networks

Universal Approximation of Flows of Control Systems by Recur...

引用

IEEE Conference on Decision and control

作者： Miguel Aguiar Amritam Das Karl H. Johansson Digital Futures and Division of Decision and Control Systems KTH Royal Institute of Technology Stockholm Sweden EE Dept. Control Systems Group Eindhoven University of Technology MB Eindhoven The Netherlands

We consider the problem of approximating flow functions of continuous-time dynamical systems with inputs. It is well-known that continuous-time recurrent neural networks are universal approximators of this type of system. In this paper, we prove that an architecture based on discrete-time recurrent neural networks universally approximates flows of continuous-time dynamical systems with inputs. The required assumptions are shown to hold for systems whose dynamics are well-behaved ordinary differential equations and with practically relevant classes of input signals. This enables the use of off-the-shelf solutions for learning such flow functions in continuous-time from sampled trajectory data.

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