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4th IEEE International Conference on Modern Electrical and Energy System, MEES 2022

作者： Melnykov, Viacheslav Kalinov, Andrii Artemenko, Artem Kremenchuk Mykhailo Ostrohradskyi National University Department of Systems of Automatic Control and Electric Drive Kremenchuk Ukraine

ISBN: (纸本)9798350346831

The question of the reliability of the use of frequency-controlled electric drive systems with induction motors in industry is currently up to date. In connection with this, fault-tolerant control systems have become popular recently. These systems allow adaptive adjustment of the operation algorithm of the electric drive system in case of both mechanical and electrical damage. This work represents the methods of pre-commissioning of fail-safe control systems for a real control object, which is an induction motor operating under defects or damages (in the early stages of their development) of the stator windings. The use of such methods in scalar and vector control systems allows one to significantly reduce additional equipment vibrations and reduce thermal overloads of the electric motor and frequency converter. In turn, the appearance and development of electrical damage to electric motors lead to changes in their electromagnetic parameters, which negatively affects the quality of the energy conversion process in frequency controlled electric drive systems with vector control type. The latter is due to the fact that in such systems, information about the electromagnetic parameters of motors is used both for adjustment of regulators and for calculation of vector variables by indirect methods. The paper presents a method for determining the electromagnetic parameters of the induction motor replacement scheme when the stator windings are supplied with a low-frequency voltage at different frequencies. © 2022 IEEE.

关键词： Induction motors

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Analyzing Electric Heat Pump Modeling in an Advanced Energy Hub with Renewable Energy Integration 28

Analyzing Electric Heat Pump Modeling in an Advanced Energy ...

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28th International Electrical Power Distribution Conference, EPDC 2024

作者： Rizi, Daryoush Tavangar Nazari, Mohammad Hassan Hosseinian, Seyed Hossein Fani, Maryam Gharehpetian, G.B. Amirkabir University of Technology Department of Physics and Energy Engineering Tehran Iran Smart Control Systems Department Tehran Iran Amirkabir University of Technology Department of Electrical Engineering Tehran Iran

ISBN: (纸本)9798350385502

Establishing an energy hub emerges from the necessity to enhance energy efficiency and flexibility within the energy industry. The energy hubs being developed should be capable of meeting all forms of demand, including electricity, heating, and cooling. The energy hub is designed to work in tandem with both the natural gas and electricity grids, utilizing batteries to optimize the utilization of renewable energy (RE), reduce expenses, and improve network stability. In this study, the distribution network assumes that the energy hub is linked to a bus, and the research is viewed as integrated. An electric heat pump (EHP) has been incorporated into the energy hub, which is powered by the electricity produced by the combined heat and power (CHP) unit. The EHP generates heat and cold as needed, depending on its operating mode. Following the integration of energy hub management with the addition of the EHP, the system's operating costs decrease by 20.8%, illustrating its profitability. Daily evaluations and analyses of the results have been conducted. According to the findings, the EHP has played a crucial role in meeting hub loads, particularly cooling loads, thereby enhancing hub energy management. © 2024 IEEE.

关键词： Energy management

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Minimum-Order Exosystem-Model-Based Disturbance Observer

Minimum-Order Exosystem-Model-Based Disturbance Observer

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2025 SICE International Symposium on control systems, SICE ISCS 2025

作者： Shikada, Kana Kawata, Masakatsu Sebe, Noburu Kyushu Institute of Technology Department of Creative Informatics Fukuoka Japan National Institute of Technology Kitakyushu College Department of Creative Engineering Fukuoka Japan Kyushu Institute of Technology Department of Intelligent and Control Systems Fukuoka Japan

ISBN: (纸本)9784907764852

This paper considers a minimum-order observer for the augmented system consisting of the nominal plant model and disturbance generating model (exosystem model). This paper shows that this minimum-order exosystem-model-based observer acts as a disturbance observer. Shikada and Sebe showed that the inverse-model-based disturbance observer can be realized as a full-order Luenberger-type observer for the nominal model. On the other hand, the exosystem-model-based disturbance observer is a full-order observer for the augmented system consisting of the nominal plant model and the exosystem model. Accordingly, the order of the exosystem-model-based disturbance observer is higher than that of the inverse-model-based disturbance observer. The minimum-order exosystem-model-based disturbance observer considered in this paper fills the gap of the difference in order. Furthermore, this paper also clarifies the one-to-one correspondence to the Luenberger-type disturbance observer for the nominal plant model. This correspondence shows that the minimum-order exosystem-model-based disturbance observer can achieve the same characteristics as the inverse-model-based disturbance observer. © 2025 The Society of Instrument and control Engineers.

关键词： Robust control

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An interaction-fair semi-decentralized trajectory planner for connected and autonomous vehicles

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Autonomous Intelligent systems 2025年第1期5卷 1-20页

作者： Liu, Zhengqin Lei, Jinlong Yi, Peng Hong, Yiguang Department of Control Science and Engineering Tongji University Shanghai201804 China The Shanghai Research Institute for Intelligent Autonomous Systems Shanghai201804 China Shanghai Institute of Intelligent Science and Technology Tongji University Shanghai201804 China

Lately, there has been a lot of interest in game-theoretic approaches to the trajectory planning of autonomous vehicles (AVs). But most methods solve the game independently for each AV while lacking coordination mechanisms, and hence result in redundant computation and fail to converge to the same equilibrium, which presents challenges in computational efficiency and safety. Moreover, most studies rely on the strong assumption of knowing the intentions of all other AVs. This paper designs a novel autonomous vehicle trajectory planning approach to resolve the computational efficiency and safety problems in uncoordinated trajectory planning by exploiting vehicle-to-everything (V2X) technology. Firstly, the trajectory planning for connected and autonomous vehicles (CAVs) is formulated as a game with coupled safety constraints. We then define the interaction fairness of the planned trajectories and prove that interaction-fair trajectories correspond to the variational equilibrium (VE) of this game. Subsequently, we propose a semi-decentralized planner for the vehicles to seek VE-based fair trajectories, in which each CAV optimizes its individual trajectory based on neighboring CAVs’ information shared through V2X, and the roadside unit takes the role of updating multipliers for collision avoidance constraints. The approach can significantly improve computational efficiency through parallel computing among CAVs, and enhance the safety of planned trajectories by ensuring equilibrium concordance among CAVs. Finally, we conduct Monte Carlo experiments in multiple situations at an intersection, where the empirical results show the advantages of SVEP, including the fast computation speed, a small communication payload, high scalability, equilibrium concordance, and safety, making it a promising solution for trajectory planning in connected traffic scenarios. To the best of our knowledge, this is the first study to achieve semi-distributed solving of a game with coupled constr

关键词： Autonomous vehicles

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Incident indicators for freeway traffic flow models

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Communications in Transportation Research 2022年第1期2卷 66-74页

作者： Azita Dabiri Balazs Kulcsar Delft Center for Systems and Control Delft University of Technology2628 CNDelftthe Netherlands Department of Electrical Engineering Chalmers University of Technology41296GothenburgSweden

Developed in this paper is a traffic flow model parametrised to describe abnormal traffic *** large traffic networks,the immediate detection and categorisation of traffic incidents/accidents is of capital importance to avoid breakdowns,further ***,this claims for traffic flow models capable to capture abnormal traffic condition like ***,by means of proper real-time estimation technique,observing accident related parameters,one may even categorize the severity of ***,in this paper,we suggest to modify the nominal Aw-Rascle(AR)traffic model by a proper incident related *** proposed Incident Traffic Flow(ITF)model is defined by introducing the incident parameters modifying the anticipation and the dynamic speed relaxation terms in the speed equation of the AR *** modifications are proven to have physical ***,the characteristic properties of the ITF model is discussed in the paper.A multi stage numerical scheme is suggested to discretise in space and time the resulting non-homogeneous system of *** resulting systems of ODE is then combined with receding horizon estimation methods to reconstruct the incident ***,the viability of the suggested incident parametrisation is validated in a simulation environment.

关键词： Macroscopic traffic flow models Aw-Rascle model Traffic accidents Moving horizon PDE ODE Multi stage numerical scheme

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Response probability density of a single-degree-of-freedom linear system under non-Gaussian random excitation with dominant frequency 14

Response probability density of a single-degree-of-freedom l...

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14th International Conference on Recent Advances in Structural Dynamics, RASD 2024

作者： Tsuchida, Takahiro Department of Systems and Control Engineering Tokyo Institute of Technology Ookayama 2-12-1 Meguro-ku Tokyo152-8552 Japan

The response probability density function (PDF) of a single-degree-of-freedom linear system under non-Gaussian random excitation with a non-zero dominant frequency is investigated. The non-Gaussian excitation is a zero-mean stationary stochastic process prescribed by a first-order PDF and a power spectral density (PSD) with bandwidth and dominant frequency parameters. Uniform and Laplace distributions are considered for the excitation PDF. Monte Carlo simulations are performed to obtain the stationary displacement and velocity PDFs of the system. The simulation results indicate that the effects of excitation non-Gaussianity on the response PDFs vary greatly, depending on the bandwidth and dominant frequency of the excitation PSD. Particularly, the excitation non-Gaussianity appears strongly in the response PDFs when the excitation has a narrow bandwidth and the excitation dominant frequency matches the natural frequency of the system. Next, it is shown that when the excitation and response waveforms are similar, the response PDFs take a shape similar to the excitation PDF;on the other hand, when the waveforms are different, the response PDFs are nearly Gaussian, irrespective of the shape of the excitation PDF. Furthermore, as a quantitative index of waveform similarity, the maximum absolute value of the normalized cross-correlation function of excitation and response is introduced. The correspondence between the index value and the non-Gaussianity of the response PDF is revealed. © 2024 Institute of Physics Publishing. All rights reserved.

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CDQKL: Consensus-Based Distributed Quantum Kernel Learning

CDQKL: Consensus-Based Distributed Quantum Kernel Learning

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Quantum Communications, Networking, and Computing (QCNC), International Conference on

作者： Wenxuan Ma Mengxiang Liu Ruilong Deng State Key Laboratory of Industrial Control Technology and the College of Control Science and Engineering Zhejiang University Hangzhou China Department of Automatic Control and Systems Engineering University of Sheffield Sheffield UK

ISBN: (数字)9798350366778

ISBN: (纸本)9798350366785

The field of quantum computing has developed rapidly in recent years due to its promising trend of surpassing traditional machine learning in terms of speed and effectiveness. Quantum kernel learning is one of the paradigms of quantum machine learning, but the training of quantum kernel is time consuming. Therefore, this work makes the first attempt to introduce a consensus-based distributed approach to quantum kernel learning - named CDQKL - that only requires to exchange model parameter information between adjacent nodes while avoiding the need of sharing local training data. Through comparative experimental studies, the advantages of CDQKL in classification accuracy and convergence speed are verified. Considering the popularization of quantum computing cloud service and miniaturization of quantum terminals, the CDQKL adapting to this trend is able to play a vital role in data security, which implies the far-reaching significance of this work. Our code is available at https://***/Leisurivan/CDOKL.

关键词： Training Adaptation models Quantum computing Accuracy Training data Machine learning Market research

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A note on a ode model of micro rna-dependent regulation of messenger rna levels

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UPB Scientific Bulletin, Series A: Applied Mathematics and Physics 2021年第4期83卷 171-176页

作者： Olteanu, Mircea Ştefan, Radu Department of Mathematical Methods and Models Faculty of Applied Sciences University "Politehnica" of Bucharest Romania Department of Automatic Control and Systems Engineering Faculty of Automatic Control and Computer Science University "Politehnica" of Bucharest Romania

We study the qualitative behavior (invariance, boundedness and equilibria) of the solutions of a mathematical model describing the dynamics of microRNA AGO complexes and mRNA targets interaction. © 2021, Politech... 详细信息

关键词： Ordinary differential equations

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Higher harmonics influence on stability of arcing single phase-to-earth faults in 6−10 kV networks with arc-suppression coil

Higher harmonics influence on stability of arcing single pha...

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2021 IEEE Power and Energy Student Summit, PESS 2021

作者： Kutumov, Yuri D. Shadrilkova, Tatyana Yu. Shuin, Vladimir A. Automatic Control of Electrical Power Systems Department Ivanovo State Power Engineering University Ivanovo Russia

ISBN: (纸本)9783800757169

This paper focuses on the research of steady-state earthing arc burning conditions in the context of influence of higher harmonic components in earth fault current. The criteria of arc burning stability and of single phase-to-earth fault transfer to phase-to-phase short circuit are offered in the paper. Calculation of the time period for which arcing single phase-to-earth fault transfers to phase-to-phase short circuit, was conducted. Also the root mean square value of residual fault current which makes steady-state earthing arc burning possible, was defined with the usage of COMSOL Multiphysics and PSCAD software. The obtained results can be used during development and research of single phase-to-earth fault and thermal overload relay protection devices. © VDE VERLAG GMBH · Berlin · Offenbach.

关键词： Electric grounding

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2411 | Proposing Turning Motion of The Small and Lightweight Push-Rolling Rover with Minimal Configuration 21

2411 | Proposing Turning Motion of The Small and Lightweight...

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21st International and 12th Asia-Pacific Regional Conference of the International Society for Terrain-Vehicle systems, ISTVS 2024

作者： Fujiwara, Daisuke Iizuka, Kojiro Suwa University of Science Department of Mechanical Engineering and Electrical Engineering Nagano Japan Shibaura Institute of Technology Department of Machinery and Control Systems Saitama Japan

ISBN: (纸本)9781942112570

Some organizations in Japan have planned planetary explorations using a small rover. However, the rovers with cylindrical wheels have a risk of failing to move in the loose soil area, such as the surface of the lunar/planet. The movement using the supporting force of the locked wheel, for example, a wheeled walking, or push-pull locomotion, can reduce the risk. Previous studies have mainly developed relatively large rovers over a mass of 10 kg. Meanwhile, our group has developed a small and lightweight (under a mass of a few kg) push-rolling rover with minimal configuration, and our previous studies indicated that the rover could climb steep slopes over 30 degrees with low slip. Planetary exploration rovers are required to move in an arbitrary direction;therefore, the developed rover also needs to have a function of a turning motion. This paper proposes the turning motion while inching for the push-rolling rover with minimal configuration and evaluates its performance by the traveling experiments at different conditions (driving conditions, and wheel shapes). The experimental results indicated that the proposed turning motion using high wheel slip and lug's wheel realized turning with low slip on loose surfaces with steep slopes. Additionally, the experimental results also showed that the slip amount of the rotational center is lower than that of a normal skid-steering rover. © 2024 International Society for Terrain-Vehicle systems. All rights reserved.

关键词： Rovers

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