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3rd IEEE International Conference on Sustainable Energy and Future Electric Transportation, SeFet 2023

作者： Mathur, Karan Kucuk, Fuat Graduate School of Engineering Kyoto University of Advanced Science Department of Mechanical and Electrical Systems Engineering Kyoto Japan

ISBN: (纸本)9798350319972

Railway transportation is a vital mode of transportation that is widely used across the globe. Ensuring the safety of passengers and the train is of utmost importance, along with optimizing energy efficiency. Wheel-rail contact adhesion is an essential parameter that determines the rolling motion of wheels on the rails. The coefficient of friction plays a crucial role in determining the adhesion parameter, and a reduction in the coefficient of friction can lead to wheel skidding. In this paper, an optimized slip/slide prevention control algorithm has been proposed that works separately on each axle, thereby determining which axle is slipping and providing control to that axle set only. The algorithm prevents wheel locking during heavy slide detection and provides emergency brake assistance in emergency situations. The simulation results show that the optimized protection system provides better safety measures against axle lock in emergency situations. The proposed algorithm not only ensures passenger safety but also supports large energy savings in wheel slip and slide. The model consists of a full-scale model of a 3-car electric train unit constructed with the help of MATLAB-Simulink modeling and simulation software. The proposed algorithm has been implemented and tested on the simulated model of a train unit in MATLAB-Simulink, demonstrating significant improvements from the previous research. © 2023 IEEE.

关键词： Adhesion

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Lightweight Stereo Matching for Real-Time Applications with 2D Cost Volume Aggregation

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IEEE Access 2025年 13卷 87112-87121页

作者： La, Thai Tao, Linh Watanabe, Dai Shibaura Institute of Technology Graduate School of Engineering and Science Tokyo Japan Hanoi University of Science and Technology School of Mechanical Engineering Hanoi Viet Nam Shibaura Institute of Technology Department of Machinery and Control Systems Tokyo Japan

Despite the significant advancements in learning-based stereo matching algorithms, a significant challenge remains: the high computational cost and memory demands of 3D convolutions, which hinder real-time deployment on resource-constrained platforms like edge devices. In this paper, we present a novel approach that completely avoids the use of 3D convolutions, with the goal of achieving faster inference speeds while maintaining comparable accuracy to existing state-of-the-art methods. Our proposed solution revolves around a 2D cost aggregation technique, which serves as a viable alternative to traditional 3D convolutions, delivering similar results in terms of accuracy. This innovative method significantly reduces computational overhead, facilitating more efficient resource utilization and paving the way for real-time applications. Complementing our 2D cost aggregation module, we introduce a multi-stage feature extractor, designed to enhance feature representation while remaining straightforward and lightweight. The integration of the 2D cost aggregation and multi-stage feature extraction results in an efficient architecture for cost aggregation, simplifying the model and ensuring computational efficiency without sacrificing accuracy. This framework delivers high-performance stereo matching suitable for devices with limited computational capabilities. Through evaluation on benchmark datasets, we demonstrate the effectiveness of our approach, highlighting its potential for real-time 3D perception in applications. By addressing the constraints imposed by 3D convolutions and offering a more pragmatic alternative, this work bridges the gap between high-performance stereo matching algorithms and the realities of edge computing environments. © 2013 IEEE.

关键词： Stereo image processing

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Neural Dynamics for Cooperative Motion control of Omnidirectional Mobile Manipulators in the Presence of Noises: A Distributed Approach

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IEEE/CAA Journal of Automatica Sinica 2024年第7期11卷 1605-1620页

作者： Yufeng Lian Xingtian Xiao Jiliang Zhang Long Jin Junzhi Yu Zhongbo Sun the Department of Control Engineering Changchun University of TechnologyChangchun 130012China IEEE the College of Information Science and Engineering Northeastern UniversityShenyang 110819 the National Mobile Communications Research Laboratory Southeast UniversityNanjing 210096China the School of Information Science and Engineering Lanzhou UniversityLanzhou 730000China the State Key Laboratory for Turbulence and Complex Systems Department of Advanced Manufacturing and RoboticsCollege of EngineeringPeking UniversityBeijing 100871China

This paper presents a distributed scheme with limited communications, aiming to achieve cooperative motion control for multiple omnidirectional mobile manipulators(MOMMs).The proposed scheme extends the existing single-agent motion control to cater to scenarios involving the cooperative operation of MOMMs. Specifically, squeeze-free cooperative load transportation is achieved for the end-effectors of MOMMs by incorporating cooperative repetitive motion planning(CRMP), while guiding each individual to desired poses. Then, the distributed scheme is formulated as a time-varying quadratic programming(QP) and solved online utilizing a noise-tolerant zeroing neural network(NTZNN). Theoretical analysis shows that the NTZNN model converges globally to the optimal solution of QP in the presence of noise. Finally, the effectiveness of the control design is demonstrated by numerical simulations and physical platform experiments.

关键词： Cooperative motion control noise-tolerant zeroing neural network(NTZNN) omnidirectional mobile manipulator(OMM) repetitive motion planning

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Network-based robust exponential fuzzy control for uncertain systems

Network-based robust exponential fuzzy control for uncertain...

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作者： Saravanakumar, Ramasamy Hoon Joo, Young Graduate School of Advanced Science and Engineering Hiroshima University Higashihiroshima Japan School of IT Information and Control Engineering Kunsan National University Gunsan-si Korea Republic of

This article studies the robust exponential stability and Takagi–Sugeno (T–S) fuzzy control synthesis for networked control systems via (Formula presented.) performance. The main aim of this paper is to design fuzzy controllers with less conservative results. Novel weighted integral inequalities (WIIs) are proposed based on Wirtinger's integral inequalities. The T–S fuzzy approach expresses nonlinear systems as linear submodels with IF–THEN rules for deriving the stability conditions. Then, by constructing a suitable Lyapunov–Krasovskii functional (LKF) and applying new WIIs, improved exponential stability and stabilization criteria are established in the form of linear matrix inequalities (LMIs). Three examples are provided to demonstrate the advantages and usefulness of the proposed novel method. Two are application-oriented examples, such as the variable speed wind turbine (VSWT) system and nonlinear mass-spring (NMS) system. © 2022 John Wiley & Sons, Ltd.

关键词： Networked control systems

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Observation of intravalley spin scattering in a doped multivalley semiconductor

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Physical Review B 2025年第8期111卷 L081301-L081301页

作者： K. Hamaya T. Okada K. Kawashima T. Naito K. Oki S. Kikuoka Y. Wagatsuma M. Yamada K. Sawano Department of Systems Innovation Graduate School of Engineering Science Osaka University 1-3 Machikaneyama Toyonaka 560-8531 Japan Advanced Research Laboratories Tokyo City University 1-28-1 Tamazutsumi Tokyo 158-8557 Japan

To clarify spin-related phenomena within a single conduction valley of multivalley semiconductors, we experimentally study the effect of carrier concentration (n) on spin lifetime (τS) in strained Si0.1Ge0.9 at various temperatures. The spin diffusion length (λ) of strained Si0.1Ge0.9 is estimated from the contact distance dependence of the nonlocal spin signals for spin transport measurements in lateral spin-valve devices with varying n. The obtained λ is found to depend on n at temperatures below ∼100K, with the estimated τS value at 8 K varying significantly with n, ranging from 0.2 to 6.2 ns. These features suggest the presence of intravalley spin scattering at low temperatures even in doped multivalley semiconductors. Thus, strained n−Si0.1Ge0.9 with L-valley energy splitting serves as a powerful tool for investigating the spin relaxation mechanisms in a single conduction valley of doped multivalley semiconductors.

关键词： Carrier concentration

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Fundamental insights and recent advances in catalytic oxidation processes using ozone for the control of volatile organic compounds

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Environmental science and Pollution Research 2024年第31期31卷 43540-43560页

作者： Einaga, Hisahiro Zheng, Xuerui Department of Advanced Materials Science and Engineering Faculty of Engineering Sciences Kyushu University Kasuga Fukuoka816-8580 Japan Department of Interdisciplinary Engineering Sciences Interdisciplinary Graduate School of Engineering Sciences Kyushu University Kasuga Fukuoka816-8580 Japan

The development of technologies for highly efficient treatment of emissions containing low concentrations of volatile organic compounds (VOCs) remains an important challenge. Catalytic oxidation with ozone (catalytic ozonation) is useful for the oxidative decomposition of VOCs, particularly aromatic compounds, under ambient temperature conditions. Only inexpensive transition metal oxides are required as catalysts, and Mn-based catalysts are widely used for catalytic ozonation. This review describes the oxidation reaction mechanisms, reaction pathways of aromatic hydrocarbons, and dependence of the catalytic ozonation activity on the reaction conditions. The reasons why Mn oxides are effective in catalytic ozonation are also explained. The structure of the catalytic active sites and the types of supporting materials contributing to the reaction are also discussed in detail, with the aim of establishing a VOC control technology. In addition, recent progress in catalytic oxidation processes using ozone as an oxidant has been outlined, focusing on catalyst materials and reaction conditions. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

关键词： Volatile organic compounds

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Compound Product of Hypermatrices

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Journal of systems science & Complexity 2024年第1期37卷 169-183页

作者： CHENG Daizhan MENG Min ZHANG Xiao JI Zhengping Key Laboratory of Systems and Control Academy of Mathematics and Systems ScienceChinese Academy of SciencesBeijing 100190China Department of Control Science and Engineering School of Electronics and Information EngineeringTongji UniversityShanghai 201210China National Center for Mathematics and Interdisciplinary Sciences Chinese Academy of SciencesBeijing 100190China School of Mathematical Sciences University of Chinese Academy of SciencesBeijing 100149China.

The semi-tensor product(STP)of matrices is generalized to multidimensional arrays,called the compound product of *** product is first defined for three-dimensional hypermatrices with compatible orders and then extended to general *** different types of hyperdeterminants are introduced and certain properties are *** Lie groups and Lie algebras corresponding to the hypermatrix products are ***,these results are applied to dynamical systems.

关键词： Compound semi-tensor product hyperdeterminants hypereigenvalues and hypereigenvectors hypergeneral linear groups hypermatrices.

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Equalizer Zero-Determinant Strategy in Discounted Repeated Stackelberg Asymmetric Game

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Journal of systems science & Complexity 2024年第1期37卷 184-203页

作者： CHENG Zhaoyang CHEN Guanpu HONG Yiguang Key Laboratory of Systems and Control Academy of Mathematics and Systems ScienceChinese Academy of SciencesBeijing 100190China School of Mathematical Sciences University of Chinese Academy of SciencesBeijing 100049China School of Electrical Engineering and Computer Science KTH Royal Institute of Technology10044 StockholmSweden. Department of Control Science and Engineering Tongji UniversityShanghai 201804China Shanghai Research Institute for Intelligent Autonomous Systems Tongji UniversityShanghai 210201China

This paper focuses on the performance of equalizer zero-determinant(ZD)strategies in discounted repeated Stackelberg asymmetric *** the leader-follower adversarial scenario,the strong Stackelberg equilibrium(SSE)deriving from the opponents’best response(BR),is technically the optimal strategy for the ***,computing an SSE strategy may be difficult since it needs to solve a mixed-integer program and has exponential complexity in the number of *** this end,the authors propose an equalizer ZD strategy,which can unilaterally restrict the opponent’s expected *** authors first study the existence of an equalizer ZD strategy with one-to-one situations,and analyze an upper bound of its performance with the baseline SSE *** the authors turn to multi-player models,where there exists one player adopting an equalizer ZD *** authors give bounds of the weighted sum of opponents’s utilities,and compare it with the SSE ***,the authors give simulations on unmanned aerial vehicles(UAVs)and the moving target defense(MTD)to verify the effectiveness of the proposed approach.

关键词： Discounted repeated Stackelberg asymmetric game equalizer zero-determinant strategy strong Stackelberg equilibrium strategy

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A new optimal allocation of DGs in distribution networks by using coot bird optimization method

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Energy Informatics 2023年第1期6卷 30页

作者： Memarzadeh, Gholamreza Arabzadeh, Mohammadreza Keynia, Farshid Department of Power and Control Engineering Graduate University of Advanced Technology Kerman Iran Department of Energy Management and Optimization Institute of Science and High Technology and Environmental Sciences Graduate University of Advanced Technology Kerman Iran

Energy is one of the most important topics in the world today and is considered as one of the most effective factors for the development of countries. Due to the limitation of non-renewable energy sources and undesirable effects of consuming these resources on the environment, the strategy of countries has changed towards the use of renewable energy. Renewable energy sources do not decrease over time and operate independently of price fluctuations and are more available, thus being able to play a greater role in modern power systems. Therefore, the optimal location and use of these resources will have an impact on modifying the parameters of the power grid. In this paper an analytical approach for optimal placement and sizing of distributed generation (DG) in power distribution networks to minimize the power loss, bus voltage limits, DG capacity limits, current limits, and DG penetration limit. In the first step, determines the DG capacity causing maximum benefit at different buses, and then selects the best location for DG placement which corresponds to highest benefit in the buses. This method is applicable for sizing and siting of single as well as multiple DG units. The coot bird optimization method (CBOM) is proposed for solving optimal placement, size, and power factor (PF) of DG in distribution network. The suggested method is tested on the IEEE 33-bus, 69-bus, Distribution Networks. The proposed CBOM method has good performance to find optimal placement, size, and PF of DG and it can be applied for various distribution system. © 2023, Springer Nature Switzerland AG.

关键词： Birds

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Distributed Optimization and Scaling Design for Solving Sylvester Equations

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Journal of systems science & Complexity 2024年第6期37卷 2487-2510页

作者： CHENG Songsong YU Xin ZENG Xianlin LIANG Shu HONG Yiguang Anhui Engineering Laboratory of Human-Robot Integration System and Intelligent Equipment School of Electrical Engineering and AutomationAnhui UniversityHefei 230601China Key Laboratory of Intelligent Control and Decision of Complex Systems School of AutomationBeijing Institute of TechnologyBeijing 100081China Department of Control Science and Engineering Tongji UniversityShanghai 201804China Shanghai Research Institute for Intelligent Autonomous Systems Tongji UniversityShanghai 201210China

This paper develops distributed algorithms for solving Sylvester *** authors transform solving Sylvester equations into a distributed optimization problem,unifying all eight standard distributed matrix *** the authors propose a distributed algorithm to find the least squares solution and achieve an explicit linear convergence *** results are obtained by carefully choosing the step-size of the algorithm,which requires particular information of data and Laplacian *** avoid these centralized quantities,the authors further develop a distributed scaling technique by using local information *** a result,the proposed distributed algorithm along with the distributed scaling design yields a universal method for solving Sylvester equations over a multi-agent network with the constant step-size freely chosen from configurable ***,the authors provide three examples to illustrate the effectiveness of the proposed algorithms.

关键词： Distributed optimization least squares solution linear convergence rate step-size interval Sylvester equation

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