检索结果-内蒙古大学图书馆

16th Annual Power Electronics, Drive Systems, and Technologies Conference, PEDSTC 2025

作者： Farajpour, Reza Sarparast, Mojtaba Adabi, Jafar Noshirvani University Of Technology Faculty of Electrical and Computer Engineering Babol Iran

ISBN: (纸本)9798331533946

This paper addresses the challenge of commonmode voltage (CMV) generation in three-phase two-level back-to-back converters, which are a significant source of electromagnetic interference (EMI) in variable-speed drive (VSD) applications. The rapid switching in these converters often produces high CMV, inducing damaging shaft voltages in motor bearings and requiring costly EMI filtering to meet electromagnetic compatibility (EMC) standards. A novel pulsewidth modulation (PWM) strategies are proposed in two steps and evaluated to reduce CMV amplitudes without compromising inverter performance. These strategies operate by controlling the switching sequences of both rectifier and inverter, effectively limiting CMV to two distinct levels: ± 23 V d c, ± 13 Vdc. Simulation results demonstrate significant CMV reductions for each method, validating their effectiveness and practical feasibility. This work provides a promising approach to improving the EMI profile of back-to-back converters used in industrial drives, high-voltageDC transmission, and renewable energy systems, with applications in electric vehicles and microgrids. © 2025 IEEE.

关键词： Variable speed drives

来源：评论

学校读者我要写书评

暂无评论

Isolated Soft Switched Resonant Led Driver with Constant Output Current and Wide Input Voltage Range 16

Isolated Soft Switched Resonant Led Driver with Constant Out...

引用

16th Annual Power Electronics, Drive Systems, and Technologies Conference, PEDSTC 2025

作者： Askari, Shirin Farzanehfard, Hosein Maghsoudi, Mohammad Isfahan University of Technology Department of Electrical and Computer Engineering Isfahan Iran

ISBN: (纸本)9798331533946

This paper proposes an isolated LCC resonant converter (LCC-RC) designed to deliver a constant output current for LED drivers across a wide range of input voltages by integrating a boost front-end stage with an LCC resonant converter. This topology leverages an LCC network to deliver numerous advantages. It integrates the boost filter inductor and transformer magnetizing inductance, ensuring that the primary switches achieve full Zero Voltage Switching (ZVS) and the secondary rectifier diodes experience Zero Current Switching (ZCS) across a wide range of duty cycles. Notably, the output current remains load-independent, making this configuration well-suited for LED applications. In addition, efficiency is improved by functioning near the resonant frequency. The hybrid structure of the proposed converter facilitates the use of a straightforward constant-frequency asymmetrical pulsewidth modulation (APWM) scheme to control the output current. To confirm the theoretical analysis and validate the LED driver functionality, a 50 W experimental prototype of the proposed driver was successfully created in the laboratory. This prototype supports an extensive input voltage range spanning from 18 V to 40 V, enabling it to supply a 500 mA output current to a series of 1 to 30 LEDs. This corresponds to an extensive output voltage capability spanning 3.3-100 V. © 2025 IEEE.

关键词： Zero voltage switching

来源：评论

学校读者我要写书评

暂无评论

Axon: A Novel Systolic Array Architecture for Improved Run Time and Energy Efficient GeMM and Conv Operation with On-Chip im2col

Axon: A Novel Systolic Array Architecture for Improved Run T...

引用

2025 Design, Automation and Test in Europe Conference, DATE 2025

作者： Rahaman Nayan, Md Mizanur Raj, Ritik Shaik, Gouse Basha Krishna, Tushar Naeemi, Azad J. Georgia Institute of Technology Department of Electrical and Computer Engineering United States

ISBN: (纸本)9783982674100

General matrix multiplication (GeMM) is a core operation in virtually all AI applications. Systolic array (SA) based architectures have shown great promise as GeMM hardware accelerators thanks to their speed and energy efficiency. Unfortunately, SAs incur a linear delay in filling the operands, due to unidirectional propogation via pipeline latches. In this work, we propose a novel in-array data orchestration technique in SAs where we enable data feeding on the principal diagonal followed by bi-directional propagation. This improves the runtime by up to 2 × at minimal hardware overhead. In addition, the proposed data orchestration enables convolution lowering (known as im2col) using a simple hardware support to fully exploit input feature map reuse opportunity and significantly lower the off-chip memory traffic resulting in 1.2 ×throughput improvement and 2.17 × inference energy reduction during YOLOv3 and RESNET50 workload on average. In contrast, conventional data orchestration would require more elaborate hardware and control signals to implement im2col in hardware because of the data skew. We have synthesized and conducted place and route for 16×16 systolic arrays based on the novel and conventional orchestrations using ASAP 7nm PDK and found that our proposed approach results in 0.211% area and 1.6% power overheads. © 2025 EDAA.

关键词： Matrix algebra

来源：评论

学校读者我要写书评

暂无评论

Inclusive Performance Analysis of 100 Gbps PAM-4 at SerDes Using Digital Equalizers 1

Inclusive Performance Analysis of 100 Gbps PAM-4 at SerDes U...

引用

1st Asian Conference on Communication and Networks, ASIANComNet 2024

作者： Katz, Gilad Zlotsky, Stiven Vinitzky, Ido Babecovand, Alon Wolftson, Benjamin Sonkin, Eduard Holon Institute of Technology Electrical and Computer Engineering Holon Israel

ISBN: (纸本)9798350367003

In recent years, we have witnessed an increase in data transfer rates, which requires the development of new communication methods that can handle high-speed data transfer at challenging communication channels. One of the needs is the transmission of communication over serializer deserializer (SerDes) printed circuit boards (PCBs). which are used to transmit data between chips at high speeds of 10 Gbps and above, using the pulse amplitude modulation with four levels (PAM-4) encoding method, which enables lower losses and relatively low cost. Significant signal degradation is present in high-speed communication systems at SerDes, and inter-symbol interference (ISI) distortion dominates. One of the most effective methods to mitigate ISI distortion is the use of equalizers. The goal of this research is to study the performance of communication between two chips (transmitter/receiver) over SerDes PCB at 100 Gbps using the PAM-4 encoding method with an integrated continuous time linear equalizer (CTLE), feedforward equalizer (FFE), and decision feedback equalizer (DFE). The analysis includes a transmitter/receiver with PAM-4 encoding including the PCB channel response. Further, testing the performance of the combination of different equalizers while defining relevant values and parameters (rate, transmission, convergence rate, and equalizer coefficients). Performance are evaluated using signal-to-noise ratio (SNR) and bit error rate (BER) metrics. We investigated the BER performance for five PCBs of different lengths with analog CTLE and digital FFE-DFE equalizers and found that: For a small number of taps in FFE-DFE, a specific CTLE configuration is optimal, but for an optimal combination of FFEDFE, a different configuration of the CTLE is the best for all PCB lengths. We also show that the longer the PCB length, the more coefficients of the FFE-DFE are needed, consequently, more power is required to compensate for a longer PCB length. The components of your paper [titl

关键词： Continuous time systems

来源：评论

学校读者我要写书评

暂无评论

Fully Soft Switched Bridgeless Buck Power Factor Correction Converter 16

Fully Soft Switched Bridgeless Buck Power Factor Correction ...

引用

16th Annual Power Electronics, Drive Systems, and Technologies Conference, PEDSTC 2025

作者： Kaviani, Kosar Maghsoudi, Mohammad Farzanehfard, Hosein Isfahan University of Technology Department of Electrical and Computer Engineering Isfahan Iran

ISBN: (纸本)9798331533946

In this paper, a bridgeless buck PFC structure is presented. To Fulfill soft switching for the main switches an auxiliary circuitry is utilized. The main switches of the proposed structure operate under ZVS condition and the auxiliary switch operate under ZCS condition. The introduced topology operates at Discontinuous conduction mode (DCM) leading to intrinsic PFC capability. A 120 W, 100 kHz prototype is designed and simulated to validate theoretical analysis using PSIM software. The results show 97% efficiency and fully soft switching operation. © 2025 IEEE.

关键词： Buck converter

来源：评论

学校读者我要写书评

暂无评论

SFI-Swin: symmetric face inpainting with swin transformer by distinctly learning face components distributions

引用

Multimedia Tools and Applications 2025年第17期84卷 17581-17595页

作者： Givkashi, MohammadHossein Naderi, MohammadReza Karimi, Nader Shirani, Shahram Samavi, Shadrokh Department of Electrical and Computer Engineering Isfahan University of Technology Isfahan84156-83111 Iran Department of Electrical and Computer Engineering McMaster University HamiltonL8S 4L8 Canada Computer Science Department Seattle University Seattle98122 United States

Image inpainting consists of filling holes or missing parts of an image. Inpainting face images with symmetric characteristics is more challenging than inpainting a natural scene. None of the powerful existing models can fill out the missing parts of an image while considering the symmetry and homogeneity of the picture. Moreover, the metrics that assess a repaired face image quality cannot measure the preservation of symmetry between the rebuilt and existing parts of a face. In this paper, we intend to solve the symmetry problem in the face inpainting task by using multiple discriminators that check each face organ’s reality separately and a transformer-based network. We also propose "symmetry concentration score" as a new metric for measuring the symmetry of a repaired face image. The quantitative and qualitative results show the superiority of our proposed method compared to some of the recently proposed algorithms in terms of the reality, symmetry, and homogeneity of the inpainted parts. The code for the proposed method is available at https://***/mohammadrezanaderi4/SFI-Swin. © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2024.

关键词： Deep learning

来源：评论

学校读者我要写书评

暂无评论

Outdoor navigation for visually impaired people using YOLOv5 and Transfer learning: an analytical study

引用

Multimedia Tools and Applications 2024年 1-20页

作者： Shariatinezhad, Monir Molaeezadeh, Seyyedeh Fatemeh Gholami, Mohammad Department of Electrical and Computer Engineering Jundi-Shapur University of Technology Po.Box: 64615-334 Dezful Iran

This study introduces an obstacle detection system for visual impairment rehabilitation in visually impaired individuals, leveraging YOLOv5 and transfer learning. The methodology comprises four main phases. First phase is sidewalk dataset generation, involving creating our customized PESID dataset and a proprietary dataset. Second phase is image annotation into eight essential obstacle classes. We pay special attention to edges, slopes, and holes—often overlooked in existing sidewalk datasets. These aspects are crucial for ensuring the safety of visually impaired individuals. Third phase is model pretraining with the large-scale COCO dataset. Last phase is fine-tuning using transfer learning on specialized datasets. The evaluated models for obstacle detection include YOLOv3, YOLOv5s, YOLOv5l, YOLOv5x, YOLOv5n, MobilenetSSDv2, Detectron2, RetinaNet, and Faster RCNN. On the customized PESID dataset, YOLOv5s, YOLOv5x, YOLOv5m, and YOLOv5l outperform other models in terms of Mean Average Precision at an Intersection of Union (IOU) of 0.5 (MAP0.5) and detection speed. On our proprietary dataset, the YOLOv5l model achieves a MAP0.5 of 84.5% and 77 frames per second. Notably, the MAP0.5 scores for edges, slopes, and holes are 77%, 85%, and 84%, respectively. Additionally, improving image annotation quality significantly enhances model accuracy by more than 10% for two datasets. © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2024.

关键词： Image annotation

来源：评论

学校读者我要写书评

暂无评论

SSB-Based Multi-Target Detection and Joint Velocity, Angle, and Range Estimation in 5G-NR

引用

IEEE Communications Letters 2025年第6期29卷 1340-1344页

作者： Awad, Yousef Celik, Abdulkadir Eltawil, Ahmed King Abdullah University of Science and Technology Computer Electrical and Mathematical Sciences and Engineering Division Thuwal23955 Saudi Arabia

This work aims to leverage the existing fifth generation (5G) new radio (NR) synchronization signal (SS) burst for network-side integrated sensing and communications (ISAC). A novel density-based clustering of applications with noise (DBSCAN)-based multi target detection algorithm is proposed. Furthermore, utilizing the beam sweeping nature of the SS burst, joint velocity, angle, and range (JVAR) estimation algorithms are proposed. Simulation results show that the proposed detection algorithm can reach an overall average detection accuracy of around 0.98 for different number of targets scenarios. On the other hand, the JVAR estimation accuracy are dependent on the individual radar resolution of velocity, angle and range. © 1997-2012 IEEE.

关键词： Orthogonal frequency division multiplexing

来源：评论

学校读者我要写书评

暂无评论

Event-Driven Stabilization for Markov Jump Systems Based on Disturbance Observer

IAENG International Journal of Computer Science

引用

IAENG International Journal of computer Science 2025年第5期52卷 1378-1384页

作者： Wang, Haoyu Hu, Xinyu Yan, Zhilian Chen, Yebin School of Electrical & Information Engineering Anhui University of Technology Ma’anshan243032 China School of Computer Science & Technology Anhui University of Technology Ma’anshan243032 China

This paper is concerned with the event-driven stabilization of Markov jump systems with disturbances based on disturbance observer (DO). First, a DO is employed to estimate the disturbance generated by an exogenous system. A composite control scheme is then developed by integrating DO-based compensation with a switched event-driven control law, which ensures the stability of the closed-loop Markov jump system while optimizing network resource usage. Using a time-dependent and piecewise-defined Lyapunov function, we establish sufficient conditions for the existence of the desired observer and event-driven controller. Finally, a numerical example is presented to demonstrate the effectiveness of the proposed composite control scheme. © (2025), (International Association of Engineers). All rights reserved.

关键词： Stabilization

来源：评论

学校读者我要写书评

暂无评论

Muli-Quay Combined Berth and Quay Crane Allocation Using the Cuckoo Search Algorithm 10

Muli-Quay Combined Berth and Quay Crane Allocation Using the...

引用

10th International Conference on Vehicle technology and Intelligent Transport Systems, VEHITS 2024

作者： Aslam, Sheraz Michaelides, Michalis P. Herodotou, Herodotos Department of Electrical Engineering Computer Engineering and Informatics Cyprus University of Technology Cyprus

ISBN: (纸本)9789897587030

This study investigates the combined berth allocation problem (BAP) and quay crane allocation problem (QCAP) while considering a multi-quay setting. First, a mixed integer linear programming mathematical model is developed based on various constraints and real port settings. Then, the multi-quay combined BAP and QCAP is solved using both the exact method and a metaheuristic optimization method, namely, the cuckoo search algorithm (CSA). This analysis pertains to a one-week planning scenario, utilizing data from a real port. The results of the comparative analysis show that the proposed CSA can provide a near-optimal solution ( Copyright © 2024 by SCITEPRESS - Science and technology Publications, Lda.

关键词： Integer programming

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：