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arXiv 2023年

作者： Sakaguchi, Hidetsugu Malomed, Boris A. Department of Applied Science for Electronics and Materials Interdisciplinary Graduate School of Engineering Sciences Kyushu University Fukuoka Kasuga816-8580 Japan Department of Physical Electronics School of Electrical Engineering Faculty of Engineering Tel Aviv University Tel Aviv69978 Israel

In the mean-field approximation, the well-known effect of the critical quantum collapse in a 3D gas of particles pulled to the center by potential U(r) = −U0/(2r2) is suppressed by repulsive inter-particle interactions, which create the otherwise non-existing s-wave ground state. Here, we address excited bound states carrying angular momentum, with the orbital and magnetic quantum numbers, l and m. They exist above a threshold value of the potential’s strength, U0 > l(l+ 1). The sectoral, tesseral, and zonal modes, which correspond to m = l, 0 0 − l(l + 1). Explicit results are produced for the p- and d-wave states, with l = 1 and 2, respectively. In the general form, the bound states are obtained numerically, confirming the accuracy of the analytical approximation. © 2023, CC BY.

关键词： Angular momentum

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Real-time Vehicle Detection and Tracking on Fisheye Traffic Monitoring Video in Compressed Domain

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APSIPA Transactions on Signal and Information Processing 2023年第4期12卷

作者： Ardianto, Sandy Hang, Hsueh-Ming Cheng, Wen-Huang Electrical Engineering and Computer Science International Graduate Program National Yang Ming Chiao Tung University Hsinchu Taiwan Institute of Electronics National Yang Ming Chiao Tung University Hsinchu Taiwan Department of Computer Science and Information Engineering National Taiwan University Taipei Taiwan

Our goal is to develop real-time vehicle detection and tracking schemes for fisheye traffic monitoring video using the temporal information in the compressed domain without decoding the entire video. Two algorithms are proposed. The first algorithm starts with a conventional single-frame detector, but we introduce a multi-frame information fusion stage to improve the final detection and tracking accuracy, which is implemented using multi-modal bi-directional LSTM (MM bi-LSTM) network. The second algorithm first constructs multi-frame motion trail image, and then a single-image multi-head detector is designed to produce bounding boxes of an individual frame. The first scheme can be viewed as a detect-to-track design, and the second scheme is track-to-detect. We tested our proposals on the ICIP2020 VIP Cup dataset in H.265 video format. The aforementioned algorithms are applied to the motion fields and residual images in the H.265 compressed data set. It turns out that their detection and tracking performances are on par with their pixel-domain counterparts, and they can achieve the state-of-the-art accuracy of conventional video object detectors and trackers. If the decoding process for video compression is not counted, their computational complexities are much lower than the conventional pixel-domain video object detectors and trackers. © 2023 S. Ardianto, H.-M. Hang and W.-H. Cheng.

关键词： Image compression

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WolFEx: Word-Level Function Extraction and Simplification from Gate-Level Arithmetic Circuits

WolFEx: Word-Level Function Extraction and Simplification fr...

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IEEE International Conference on Computer-Aided Design

作者： Kuo-Wei Ho Shao-Ting Chung Tian-Fu Chen Yu-Wei Fan Che Cheng Cheng-Han Liu Jie-Hong R. Jiang Graduate Institute of Electronics Engineering National Taiwan University Taipei Taiwan Graduate School of Advanced Technology National Taiwan University Taipei Taiwan Department of Electrical Engineering National Taiwan University Taipei Taiwan

Extracting word-level functions from gate-level circuits is challenging and crucial in security, synthesis, and verification applications. State-of-the-art approaches identify subcircuits to match against a predefined library of components. However, they fail for highly-optimized arithmetic circuits due to the absence of intermediate word structures and the high complexity of verifying arithmetic functions. The challenge of learning arithmetic operations from gate-level netlists is posed in the 2022 ICCAD CAD Contest. This work tackles the challenge by devising and combining algebraic, statistical, and structural techniques into an operational flow for function extraction and simplification. Beyond the contest setting, our method also deals with circuits without their input-and output-pin information. Experiments on the contest benchmarks show that our method outperforms the winning teams in the contest in both the number of solved cases and the compactness of the extracted word-level expressions. Moreover, our method can effectively extract most word-level functions within 10 minutes.

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DIGITAL FREQUENCY-LOCKED LOOP WITH WIDE LOCK-IN RANGE AND LOW FREQUENCY ERROR BASED ON MULTI-PHASE CLOCK

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International Journal of Innovative Computing, Information and Control 2022年第6期18卷 1979-1988页

作者： Yahara, Mitsutoshi Fujimoto, Kuniaki Nishiguchi, Daishi Harada, Yujiro Fukuhara, Masaaki Department of Medical Care and Welfare Engineering Tokai University 9-1-1 Toroku Higashi-ku Kumamoto-shi Kumamoto862-8652 Japan Department of Electronics and Intelligent Systems Engineering Tokai University 9-1-1 Toroku Higashi-ku Kumamoto-shi Kumamoto862-8652 Japan Graduate School of Information and Telecommunication Engineering Tokai University 2-3-23 Takanawa Minato-ku Tokyo108-8619 Japan Department of Electrical and Electronic Engineering National Institute of Technology Kurume College 1-1-1 Komorino Kurume-shi Fukuoka830-8555 Japan

An all-digital frequency-locked loop (DFLL) using a multi-phase clock-based 1 + 1/k divider has been proposed. This circuit can reduce the jitter of the output signal extremely small. However, it has the problem of a narrow lock-in range. In this paper, we propose a DFLL with a wide frequency lock-in range and low frequency error using the m + n/k divider based on a multi-phase clock. The proposed DFLL can realize an extremely wide frequency lock-in range compared to the conventional DFLL using a multi-phase clock. Also, the frequency detection error between input and output signals can be kept within one phase difference of the multi-phase clock. As a result, the steady-state frequency error of the output signal is also within one phase difference of the multi-phase clock. These characteristics were confirmed by simulation using Verilog-HDL, a hardware description language. © 2022, ICIC International. All rights reserved.

关键词： Phase locked loops

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A Zero Harmonic Distortion Master Converter for Medium Voltage Microgrids 14

A Zero Harmonic Distortion Master Converter for Medium Volta...

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14th Annual IEEE Applied Power electronics Conference and Exposition, APEC 2025

作者： Ramos, Gabriel V. De L. Brandão, Dener A. Parreiras, Thiago M. Brandao, Danilo I. De J. C.Filho, Braz Graduate Program in Electrical Engineering Universidade Federal de Minas Gerais Av. Antônio Carlos 6627 MG Belo Horizonte31270-901 Brazil Centro Federal de Educação Tecnológica de Minas Gerais Department of Electrical Engineering Belo Horizonte Brazil Universidade Federal de Minas Gerais Department of Electrical Engineering Belo Horizonte Brazil

ISBN: (纸本)9798331516116

This paper proposes the Zero Harmonic Distortion Converter (ZHD) as a master converter (MC) for medium voltage microgrids, delivering sinusoidal waveforms in both grid-connected and islanded mode without sinusoidal capacitive filtering elements. The ZHD MC ensures seamless transitions between modes using a simple control approach that eliminates the need off a voltage closed-loop control for grid-connected, islanded, and transition modes, using only a current closed-loop control for grid-connected operation. Simulation and hardware-in-the-loop results show the performance of the ZHD MC converter. © 2025 IEEE.

关键词： Closed loop control systems

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Optimized Transmission Strategy for UAV-RIS 2.0 Assisted Communications Using Rate Splitting Multiple Access

Optimized Transmission Strategy for UAV-RIS 2.0 Assisted Com...

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IEEE Conference on Vehicular Technology (VTC)

作者： Aamer Mohamed Huroon Yu-Chih Huang Li-Chun Wang Department of Electrical Engineering and Computer Science International Graduate Program National Yang Ming Chiao Tung University Institute of Communications Engineering National Yang Ming Chiao Tung University Department of Electrical and Computer Engineering National Yang Ming Chiao Tung University

In this paper, we study the transmission strategy of a ground-based beyond diagonal reconfigurable intelligent surface (BD-RIS), a.k.a RIS 2.0, in a network where multiple unmanned aerial vehicles (UAVs) simultaneously transmit signals to the respective groups of users. It is assumed that each group is assigned subcarriers orthogonal to those assigned to other groups and rate splitting multiple access (RSMA) is adopted within each group. A corresponding mixed integer nonlinear programming problem (MINLP) is formulated, which aims to jointly optimize 1) allocation of BD-RIS elements to groups, 2) BD-RIS phase rotations, 3) rate allocation in RSMA, and 4) precoders. To solve the problem, we propose using generalized benders decomposition (GBD) augmented with a manifold-based algorithm. GBD splits the MINLP problem into two sub-problems, namely the primal and the relaxed master problem, which are solved alternately and iteratively. In the primal problem, we apply block coordinate descent (BCD) to manage the coupling of variables effectively. Moreover, we recognize the manifold structure in the phase rotation constraint of BD-RIS, enabling the Riemannian conjugate gradient (RCG). Simulation results demonstrate the effectiveness of the proposed approach in maximizing spectral efficiency.

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The Mutual Information In The Vicinity of Capacity-Achieving Input Distributions

The Mutual Information In The Vicinity of Capacity-Achieving...

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IEEE International Symposium on Information Theory

作者： Hao-Chung Cheng Barış Nakiboğlu Department of Electrical Engineering and Graduate Institute of Communication Engineering Department of Mathematics National Taiwan University Taipei Taiwan R.O.C. Hon Hai (Foxconn) Quantum Computing Centre Department of Electrical and Electronics Engineering Middle East Technical University Ankara Turkey

The mutual information is analyzed as a function of the input distribution using an identity due to Topsøe for channels with (possibly multiple) linear constraints and finite input and output sets. The mutual information is bounded above by a function decreasing quadratically with the distance to the set of all capacity-achieving input distributions for the case when the distance is less than a certain threshold. Explicit expressions for the threshold and the coefficient of the quadratic decrease are derived. A counter-example is provided demonstrating the non-existence of such a quadratic bound in the case of infinitely many linear cost constraints. Implications of these observations for the channel coding problem and applications of the proof technique to related problems are discussed.

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Exergetic, Sustainability and Exergoeconomic Analyses of a Fully Photovoltaic-Powered Heat Pump Tumble Dryer

SSRN

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SSRN 2024年

作者： Atalay, Halil Tunçkal, Cüneyt Türkdoğan, Sunay Direk, Mehmet Department of Mechanical Engineering Faculty of Engineering Yalova University Yalova77200 Turkey Department of Electric and Energy Air Conditioning and Refrigeration Technology Program Yalova Community College Yalova University Yalova77100 Turkey Department of Electrical and Electronics Engineering Faculty of Engineering Yalova University Yalova77200 Turkey Department of Energy Systems Engineering Faculty of Engineering Yalova University Yalova77200 Turkey

In this study, the experimental performance of a commercial heat pump tumble dryer (HPTD) system integrated with photovoltaic (PV) was evaluated using energy and exergy analysis. Additionally, a sustainability and exergoeconomic performance analysis of system components was conducted to identify components in need of improvement. Only 17.6% of the energy generated by the panels was consumed by the HPTD system, with the remaining portion being utilized by other laboratory devices connected to the same grid, contributing to a sustainable future. In addition to meeting the energy demand, the PV system satisfied the entire power requirement of the HPTD system. It was determined that the drying chamber and the compressor together accounted for 74.53% of the total exergy destruction in the system, with this cost being predominantly incurred during the drying process. Moreover, based on the exergy, sustainability, and exergoeconomic analyses conducted, it was concluded that the drying chamber, integrated with the fan unit, exhibited the lowest exergy efficiency (57.04%), the highest waste exergy ratio (0.83) and the lowest exergoeconomic factor value (0.716) among the system components, indicating the need for improvement in the fan-integrated drying chamber. © 2024, The Authors. All rights reserved.

关键词： Exergy

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Telecontrol of Prosthetic Robot Hand Using Myo Armband

Telecontrol of Prosthetic Robot Hand Using Myo Armband

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2021 IEEE International Conference on Automatic Control and Intelligent Systems, I2CACIS 2021

作者： Yakob, Muhammad Yunus bin Baharuddin, Mohd Zafri bin Khairudin, Ahmad Rafiq Mohd Karim, Muhammad Hanif Bin Abdul Universiti Tenaga Nasional Master of Electrical College of Graduate and Studies Selangor Malaysia Universiti Tenaga Nasional College of Engineering Department of Electrical and Electronics Engineering Selangor Malaysia Universiti Tenaga Nasional College of Engineering Department of Foundation and Diploma Studies Engineering Selangor Malaysia

ISBN: (纸本)9781665403436

Bionic prosthetic hands are widely utilised to support people who have upper limb amputations and incapability by making it movable and controllable. However, the price of bionic prosthetic arms in the current market is quite expensive, hence limiting people from owning it. Nevertheless, Myo Armband appears to provide fine hand movement and sensitive to input, making it a suitable alternative to gesture-based wireless control. Hence, in this project, it will be used to read and control signals for the 3d printed robotic prosthetic arm. The control of prosthetic robot arm is achieved by sensing the gestures of amputees' upper limb. Bluetooth is used for the wireless communication between Myo armband and the computer, while communication between computer and the prosthetic robot arm used serial communication. It is observed that fist gestures from Myo armband controlling the prosthetic robot hand have been successfully achieved. The proposed configuration can be used in human-robot interaction and telecontrol studies. © 2021 IEEE.

关键词： Artificial limbs

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A Comparative Analysis of Terminal and Second Order Sliding Mode Controllers for Full Bridge Single Phase Inverters

A Comparative Analysis of Terminal and Second Order Sliding ...

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Annual Conference of Industrial electronics Society

作者： Samet Ayik Sevki Demirbas Naki Güler Ugur Fesli Department of Electrical and Electronics Engineering Graduate School of Natural and Applied Sciences Gazi University Ankara Turkey Electrical and Electronics Engineering Department Gazi University Ankara Turkey Renewable Energy and Smart Grid Application and Research Center Gazi University Ankara Turkey Electronic and Automation Department Technical Sciences Vocational School Gazi University Ankara Turkey

ISBN: (数字)9781665464543

ISBN: (纸本)9781665464550

This study presents a comprehensive analysis of Terminal Sliding Mode Control (TSMC) and Super Twisting Sliding Mode Control (SOSMC), in the context of full-bridge single-phase inverters. The controllers are designed to output current control of the single-phase inverter. Simulation studies are performed on MATLAB/Simulink platform to investigate the dynamic responses, steady-state error, ripple magnitude and total harmonic distortion (THD). The results indicate that TSMC offers faster response times but suffers from significant undershoot and higher steady-state errors. Conversely, SOSMC demonstrates superior performance with lower steady-state error, reduced ripple and significantly less harmonic distortion. These findings highlight the relative advantages and disadvantages of each control strategy, providing valuable insights for their application in both academic research and industrial practice.

关键词： Bridges Industrial electronics Total harmonic distortion Harmonic analysis Inverters Steady-state Time factors Reliability MATLAB Sliding mode control

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