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19th International Conference on Mathematical Modeling and Simulation of Systems, MODS 2024

作者： Zhuk, Dmytro Zhuk, Oleksandr Stepenko, Serhii Chornyi, Oleksii Al-Suod, Mahmoud M. S. Kozlov, Maksym Education and Scientific Institute of Automatics and Electrical Engineering National University of Shipbuilding named after Admiral Makarov Mykolaiv Ukraine Department of Electrical Engineering Information and Measurement Technologies Chernihiv Polytechnic National University Chernihiv Ukraine Department of Automatic Control and Electric Drive Systems Kremenchuk Mykhailo Ostrohradskyi National University Kremenchuk Ukraine Department of Electrical Engineering Al-Ahliyya Amman University Amman19328 Jordan Department of Electrical and Mechatronics Engineering Tafila Technical University Tafila66110 Jordan

ISBN: (纸本)9783031907340

The paper examines possible directions for improving power quality assurance tools by achieving their multifunctionality, controllability, and efficiency, with the aim of enhancing their performance while considering the circuit and operational specifics of integrated ship electrical power systems with semiconductor propulsion complexes. To address the challenges posed by increasing harmonic distortions and reactive power in such systems, one- and two-stage versions of system-controlled filter-compensating devices are proposed and thoroughly investigated. These devices are specifically designed to enable full reactive power compensation while significantly reducing voltage and current harmonic distortions, thus ensuring improved power quality and system reliability in ship electrical power systems with semiconductor propulsion complexes. The proposed modeling approach provides a comprehensive framework for analyzing and comparing the impact of controlled filter-compensating devices on the integral harmonic distortion coefficient of voltage across systems with various types of input rectifiers incorporated within the frequency converters of semiconductor propulsion complexes. Additionally, the study takes into account possible deviations in the ship network frequency, which can influence system performance under real operating conditions. The results demonstrate the effectiveness of the proposed tools in mitigating power quality issues, thereby contributing to the overall stability and efficiency of modern ship electrical power systems. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.

关键词： Reliability analysis

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MPPT Algorithms for Wind Turbines: Review and Comparison 29

MPPT Algorithms for Wind Turbines: Review and Comparison

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29th International Workshop on Electric Drives: Advances in Power Electronics for Electric Drives, IWED 2022

作者： Aleksandr, Lukin Demidova, Galina Alassaf, Omar Lukichev, Dmitry Rassolkin, Anton Vaimann, Toomas ITMO University Faculty of Control System and Robotics Saint-Petersburg Russia Tallinn University of Technology Department of Electrical Power Engineering and Mechatronics Tallinn Estonia

ISBN: (纸本)9781665467865

Wind turbines play an important role in energy generation using renewable sources. The wind is very changeable, and such turbines require techniques for finding and tracking maximum power density. The presented work includes an overview of maximum power point tracking techniques applicable to small-size wind turbines based on the Magnus effect. An overview of existing algorithms is presented. Overviewed algorithms are assessed using a simulation in MATLAB with a model of the experimental Magnus effect wind turbine. © 2022 IEEE.

关键词： Wind power

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Video2Reward: Generating Reward Function from Videos for Legged Robot Behavior Learning 27

Video2Reward: Generating Reward Function from Videos for Leg...

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27th European Conference on Artificial Intelligence, ECAI 2024

作者： Zeng, Runhao Zhou, Dingjie Liang, Qiwei Liu, Junlin Li, Hui Huang, Changxin Li, Jianqiang Hu, Xiping Sun, Fuchun Artificial Intelligence Research Institute Shenzhen MSU-BIT University China College of Mechatronics and Control Engineering Shenzhen University China College of Computer Science and Software Engineering Shenzhen University China National Engineering Laboratory for Big Data System Computing Technology Shenzhen University China Department of Computer Science and Technology Tsinghua University China

ISBN: (纸本)9781643685489

Learning behavior in legged robots presents a significant challenge due to its inherent instability and complex constraints. Recent research has proposed the use of a large language model (LLM) to generate reward functions in reinforcement learning, thereby replacing the need for manually designed rewards by experts. However, this approach, which relies on textual descriptions to define learning objectives, fails to achieve controllable and precise behavior learning with clear directionality. In this paper, we introduce a new video2reward method, which directly generates reward functions from videos depicting the behaviors to be mimicked and learned. Specifically, we first process videos containing the target behaviors, converting the motion information of individuals in the videos into keypoint trajectories represented as coordinates through a video2text transforming module. These trajectories are then fed into an LLM to generate the reward function, which in turn is used to train the policy. To enhance the quality of the reward function, we develop a video-assisted iterative reward refinement scheme that visually assesses the learned behaviors and provides textual feedback to the LLM. This feedback guides the LLM to continually refine the reward function, ultimately facilitating more efficient behavior learning. Experimental results on tasks involving bipedal and quadrupedal robot motion control demonstrate that our method surpasses the performance of state-of-the-art LLM-based reward generation methods by over 37.6% in terms of human normalized score. More importantly, by switching video inputs, we find our method can rapidly learn diverse motion behaviors such as walking and running. © 2024 The Authors.

关键词： Robots

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Bidding Strategy for Coordinated Operation of Wind Power Plants and NGG-P2G Units in Electricity Market

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CSEE Journal of Power and Energy Systems 2022年第1期8卷 212-224页

作者： Xiang Gao Ka Wing Chan Shiwei Xia Xian Zhang Guibin Wang Shenzhen Polytechnic ShenzhenChina and also with the Department of Electrical Engineering The Hong Kong Polytechnic UniversityHung HomHong KongChina Department of Electrical Engineering The Hong Kong Polytechnic UniversityHung HomHong KongChina School of Electrical and Electronic Engineering North China Electric Power UniversityBeijing 102206China School of Mechanical Engineering and Automation Harbin Institute of TechnologyShenzhen 518055China College of Mechatronics and Control Engineering Shenzhen UniversityShenzhen 518060China

The synergies between electricity and other energy resources could promote energy utilization efficiency in electricity *** this context,this paper proposes a bi-level stochastic optimization model for the joint operation of a coordinated wind power plant(WPP)and natural gas generating(NGG)-power to gas(P2G)suppliers participating in the day-ahead(DA)market and real-time(RT)market as well as providing real-time auxiliary *** coordinated supplier’s payoff is maximized in the upper level with consideration of the uncertainties of WPP output capacity and RT electricity price,while the social welfare of the grid is maximized in the lower *** results demonstrate the effectiveness of the proposed bidding model of the coordinated WPPs and NGG-P2G suppliers by examining its bidding behaviors and benefits with comparisons of four other bidding models.

关键词： Bi-level model bidding strategy WPP NGGP2G uncertainties

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Adaptive Notch Filter Design of a Single-Link Flexible Manipulator based on System Identification

Adaptive Notch Filter Design of a Single-Link Flexible Manip...

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International Conference on Computing, Electronics & Communications engineering (iCCECE)

作者： Chengwei Liu Lintao Zhu Weilong Zheng Can Wang College of Mechatronics and Control Engineering Shenzhen University Shenzhen China Motor Control Application Department STMicroelectronics Shenzhen China

This paper proposes an adaptive notch filter (ANF) control method based on recursive least squares (RLS) parameter identification, to suppress the vibration at the end of a single-link flexible manipulator (SFM), for the end inherent vibration frequency generated during operation. Firstly, the damping of SFM is considered, and its transfer function model is established to analyze the causes of vibration generated at the end. Then, the self-tuning expressions for the notch filter (NF) parameters are derived based on the results of RLS parameter identification. Finally, the simulation and experimental results show that the method can automatically suppress the vibration problem caused by the end of SFM during the motion online.

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control System for Electric Drives of Plate Straightening Machines

Control System for Electric Drives of Plate Straightening Ma...

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2023 International Russian Automation Conference, RusAutoCon 2023

作者： Radionov, Andrey A. Semitko, Andrey Yu. Loginov, Boris M. Khramshin, Vadim R. Filimonova, Aleksandra A. Moscow Polytechnic University Department of Automation and Control Moscow Russia South Ural State University Department of Mechatronics and Automation Chelyabinsk Russia Magnitogorsk Iron and Steel Works Magnitogorsk Russia Nosov Magnitogorsk State Technical University Power Engineering and Automated Systems Institute Magnitogorsk Russia South Ural State University Department of Electric Drive Mechatronics and Electromechanics Chelyabinsk Russia

ISBN: (纸本)9798350345551

The essential quality parameter of rolled products is the flatness along the rolled stock length. The profile defects of the rolled stock, produced at the modern plate mill 5000, frequently occur in the course of intense cooling implied by the thermomechanical rolling technology. To eliminate them, the mill lines include cold straightening machines. The authors show typical flatness defects caused by the occurrence of longitudinal, central and edge waves. Further, the paper characterizes a cold straightening machine installed at the mill 5000 and provides the parameters of electric engines of straightening rollers. The key drawback of the design algorithm for electric drives' control is setting engine constant moments regardless of the thickness and character of the defects in the rolled stock processed. This causes overloading of the electric and mechanical systems of certain rollers and unsatisfactory product quality. To eliminate the drawback, the authors developed a method for individual setting of engine moments closely coupled in the course of sheet processing. The authors present a functional block diagram for the control system to implement the method. The rationale is provided for the digital setting of moment controllers switched on the inputs of speed controllers. The authors conducted simulation modelling and comparative analysis of engine speeds and moments at the design and proposed settings. The paper provides the analysis of oscillograms obtained before and after the introduction of the control system developed. Its technical and economic feasibility was confirmed during operation. © 2023 IEEE.

关键词： control systems

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Quantum Circuit engineering for Correcting Coherent Noise

TechRxiv

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TechRxiv 2023年

作者： Ahsan, Muhammad Zilqurnain Naqvi, Syed Abbas Anwer, Haider Department of Mechatronics and Control Engineering University of Engineering and Technology Lahore Pakistan Department of Computer Science Namal University Mianwali Pakistan

Crosstalk and several forms of coherent noise are invisible when qubit or a gate is calibrated or benchmarked in isolation. These are unlocked during the execution of full quantum circuit applying entangling gates to several qubits simultaneously. Unitary crosstalk noise, such as unwanted ZZ coupling, limits the state fidelity during the execution of cross-resonance CNOT gates in the superconductor quantum computers. This work presents (1) method of tracing coherent errors by exploiting their sensitivity to the arrangement of CNOT gates in the circuit and (2) correction scheme that modifies original circuit by inserting carefully chosen compensating gates (single- or two-qubit) to possibly undo coherent errors. On two vastly different types of IBMQ processors offering quantum volume 8 upto 32, our experimental results show up to 25% reduction in the infidelity of [[7, 1, 3]] code |+i state (clifford circuits) and 5- to 15-qubit W-states (non-clifford circuits). Our experimental circuits aggressively deploy forced commutation of CNOT gates to obtain low noise state-preparation circuits. Encoded state initialized with fewer errors, marks an important step towards successful demonstration of fault-tolerant quantum computers. © 2023, CC BY.

关键词： Crosstalk

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Shear-accelerated crystallization of glass-forming metallic liquids in high-pressure die casting

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Journal of Materials Science & Technology 2022年第22期117卷 146-157页

作者： L.H.Liu W.J.Gao X.S.Huang T.Zhang Z.Y.Liu C.Yang W.W.Zhang W.R.Li L.Li P.J.Li National Engineering Research Center of Near-net-shape Forming for Metallic Materials South China University of TechnologyGuangzhou510640China Department of Mechanical Engineering Tsinghua UniversityBeijing100084China Institute of Eontech New Materials Co. Ltd.Dongguan523662China Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering College of Mechatronics and Control EngineeringShenzhen UniversityShenzhen518060China

As one of the most important forming technologies for industrial bulk metallic glass (BMG) parts withcomplex shapes, high-pressure die casting (HPDC) can fill a die cavity with a glass-forming metallic liquidin milliseconds. However, to our knowledge, the correlation between flow and crystallization behavior inthe HPDC process has never been established. In this study, we report on the solidification behavior ofZr_(55)Cu_(30)Ni_(5)Al_(10) glass forming liquid under various flow rates. Surprisingly, the resulting alloys display adecreasing content of amorphous phase with increase of flow rate, i.e. increase of cooling rate, suggestingthat crystallization kinetics of glass-forming metallic liquids in the HPDC process is strongly dependenton the flow field. Analysis reveals that the accelerated crystallization behavior is mainly ascribed to therapid increase in viscosity with a decreasing temperature as well as to the huge shear effect in the glassforming liquid at the end stage of the filling process when the temperature is close to the glass-transitionpoint;this results in a transition from diffusion- to advection-dominated transport. The current investigation suggests that flow-related crystallization must be considered to assess the intrinsic glass-formingability of BMGs produced via HPDC. The obtained results will not only improve the understanding ofcrystallization dynamics but also promote the high-quality production and large-scale application of BMGparts.

关键词： Crystallization Shear Supercooled liquid High pressure die casting

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An Improved Hybrid Global Maximum Power Point Tracking Approach for PV Systems based on Partial Shading Detection

An Improved Hybrid Global Maximum Power Point Tracking Appro...

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2022 IEEE Global Conference on Computing, Power and Communication Technologies, GlobConPT 2022

作者： Mohammed, Karam Khairullah Mekhilef, Saad School of Electrical Engineering Universiti Teknologi Malaysia Control and Mechatronics Engineering Department Johor Bahru Malaysia University of Technology School of Software and Electrical Engineering Faculty of Science Engineering and Technology Swinburne HawthornVIC Australia

ISBN: (数字)9781665493659

ISBN: (纸本)9781665493659

Extraction of maximum power from the PV panels, especially during partial shadowing conditions (PSC), is one of the most pressing issues in the operation of a photovoltaic (PV) system. While the conventional techniques are not able to capture the global maximum power (GMPP). Consequently, several optimization algorithms to track the GMPP have been presented. However, optimization methods are unable to distinguish uniform shading from PSCs. This paper presents a novel hybrid MPPT technique to address this drawback. An ANFIS method is proposed with a new partial shading detection approach to determine the maximum power if the system is subject to the uniform shading conditions (USCs) with the irradiance sensor being removed to reduce the cost. While a novel hybrid rat swarm optimization technique (MRSO) will implement only if partial shading occurs to avoid an unnecessary scan of the whole P-V curve during the USCs, which decreases the tracking time for USCs. The proposed approach was developed using MATLAB/SIMULINK, with a 0.05 seconds of sampling time. The simulation results revealed that the proposed method was successfully implemented, with an average tracking time of 0.375 s for uniform and PSCs with high efficiency. The effectiveness of the suggested approach has then been evaluated in light of more recent, closely similar approaches in this area. © 2022 IEEE.

关键词： Maximum power point trackers

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Recent Advancements in Pest-Repellent Monitoring Technologies in Precision Agriculture: A Comprehensive Review

Recent Advancements in Pest-Repellent Monitoring Technologie...

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Science, engineering and Business for Sustainable Development Goals (SEB-SDG), International Conference on

作者： Emaediong Sylvanus Udofa Mohamed Sultan Mohamed Ali Kufre Esenowo Jack Chika Innocent Abdulkadir Olayinka Abdulbaki Udeme Ekanem Ekanem Department of Mechatronics and Automatic Control Engineering Universiti Teknologi Malaysia Johor Malaysia Department of Mechatronics Engineering Federal University of Technology Minna Niger State Nigeria Department of Telecommunication Engineering Federal University of Technology Minna Niger State Nigeria Department of Mechatronics Engineering Technology Akwa Ibom State Polytechnic Ikot Osurua Ikot Ekpene Akwa Ibom State Nigeria

ISBN: (数字)9798350358155

ISBN: (纸本)9798350358162

With the global population increasing at a rapid pace, reaching an estimated 9.6 billion by 2050, the demand for food is expected to surge significantly. However, there is significant limitation in crop production as a result of factors such as lack of proper irrigation and pest. To meet this demand, it is essential to modernize the agricultural sector and enhance crop yields. One effective approach to overcoming the current limitations in crop production is adopting pest-repellent and monitoring technology. This paper comprehensively reviews recent advancements and modifications in commercialized and underdeveloped pest-repellent devices and monitoring technologies specifically tailored for the agricultural sector. The study focuses on the integration of pest repellent and crop monitoring in precision agriculture, examining advancements in drone design, the development of multiple sensors, and innovative techniques for farming purposes. Additionally, the report explores the integration of artificial intelligence (AI) and deep learning algorithms in remote crop monitoring, aligning with the current trend in agricultural technology. The findings of this study established and contribute to understanding the potential benefits and challenges associated with implementing advanced pestrepellent and monitoring technologies in precision agriculture, paving the way for improved agricultural practices and sustainable food production.

关键词： Precision agriculture Costs Reviews Crops Spraying Production Pesticides

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