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IEEE Conference on Electromagnetic Field Computation

作者： Hidenori Sasaki Kazuhisa Iwata Takahiro Sato Yuki Sato Department of Electrical and Electronic Engineering Hosei University Koganei JAPAN Graduate School of Science and Engineering Hosei University Koganei JAPAN Graduate School of Engineering Muroran Institute of Technology Muroran JAPAN Department of Electrical Engineering and Electronics Aoyama Gakuin University Sagamihara JAPAN

ISBN: (数字)9798350348958

ISBN: (纸本)9798350348965

A novel deep learning model that predicts motor characteristics using a deep operator network and convolutional neural networks is proposed. The proposed method accurately predicts motor characteristics under various currents and rotation angles. The proposed method improves the prediction accuracy by 43.5% compared to the conventional method.

关键词： Deep learning Accuracy Neural networks Predictive models Motors Electromagnetic fields Convolutional neural networks

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Independent Field Excitation Control of an In-Wheel Wound-Field Flux-Switching Machine for Micro-Hybrid Applications

Independent Field Excitation Control of an In-Wheel Wound-Fi...

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IEEE Annual Southern Power electronics Conference (SPEC)

作者： Diogo Pereira Vilela Galo Thales Alexandre Carvalho Maia Braz de Jesus Cardoso Filho Graduate Program in Electrical Engineering UFMG Belo Horizonte Brazil Department of Electrical Engineering UFMG Belo Horizonte Brazil

The tightening global emission regulations are com-pelling original equipment manufacturers and researchers to prioritize electrified solutions. In developing countries, fossfl fuel-powered vehicles are expected to continue being the primary choice for light-duty passenger vehicles in the medium term. It is crucial to recognize that micro and mild hybrid electric vehicles can make a significant contribution to reducing emissions and mitigating environmental impact. Electric machine designs with fewer or no rare-earth permanent magnets will play an important role in the widespread adoption of hybrid solutions. In this context, doubly salient reluctance machines exhibit a simple structure, robust mechanical strength, excellent fault tolerance, and a wide speed regulation range, making them well-suited for in-wheel applications. Particular emphasis should be placed on flux-switching ma-chines, which offer great operating flexibility, efficient heat dissipation, and power density of up to 4.8 kW/kg. This paper introduces a wound-field flux-switching machine designed for in-wheel applications, featuring individual field current control. Firstly, the machine is reconfigured to enable independent control of field currents, with a dedicated test bench equipped for precise current control. The primary objective of this research is to enhance the machine's operational versatility by facilitating electronic adjustment of the number of poles, promoting balanced operation” and auamentina field-weakenina capabilities.

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Low Routing Complexity Multiframe Pipelined LDPC Decoder Based on a Novel Pseudo Marginalized Min-Sum Algorithm for High Throughput Applications

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IEEE Transactions on Very Large Scale Integration (VLSI) Systems 2023年第1期31卷 29-42页

作者： Davila, HenryLopez Wu, Tsung-Han Jou, Shyh-Jye Jerry Chen, Sau-Gee Tsai, Pei-Yun National Chiao Tung University Eecs International Graduate Program Hsinchu30010 Taiwan National Yang Ming Chiao Tung University Institute of Electronics Hsinchu30010 Taiwan National Central University Electrical Engineering Department Taoyuan32001 Taiwan

This article presents a high throughput and low routing complexity multiframe pipelined low-density parity check (LDPC) decoder design based on a novel pseudo marginalized min-sum (PMMS) message passing approach. The proposed PMMS approach reduces the required number of interconnections in the routing network allowing the design to be implemented with reduced hardware complexity, low power consumption and high throughput capability while supporting multiple coding rates with short and long codewords as defined in many application standards. Implementation results for IEEE802.11ad/ay standards show that the proposed design satisfies a target bit error rate (BER) requirement of 3× 10-7 with 64 quadrature amp mod (QAM) targeting high throughput applications. Furthermore, the proposed design is able to achieve a throughput of 62 and 101.8 Gb/s with two pipelining stages under 28-nm CMOS and 16-nm FinFET CMOS process, respectively. As compared to the existing NMS algorithm, the proposed design based on the PMMS approach reduces the number of wires in the routing network by 45.5%, and the wirelength of the overall decoder by 17%. The area and power consumption are also reduced by 9.4% and 12%, respectively, as compared to the conventional normalized min-sum (NMS) algorithm. © 1993-2012 IEEE.

关键词： Message passing

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Verification of the Inactivation Effect of Near-UV LEDs using a Pulsed Lighting System on Staphylococcus aureus

Verification of the Inactivation Effect of Near-UV LEDs usin...

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Sustainable Smart Lighting World Conference & Expo (LS18), IEEE

作者： Hiroki Nomura Seiji Kihara Akinori Zukeran Jun Sawai Takayuki Misu Graduate School of Engineering Master's Degree Program in Electrical and Electronic Engineering Kanagawa Institute of Technology Atsugi Kanagawa Japan Department of Electrical and Electronic Engineering Faculty of Engineering Kanagawa Institute of Technology Atsugi Kanagawa Japan Department of Nutrition and Life Science Faculty of Health and Medical Sciences Kanagawa Institute of Technology Atsugi Kanagawa Japan

ISBN: (数字)9798331540197

ISBN: (纸本)9798331540203

The purpose of this study is to investigate the disinfection effect of Near-UV LED light, which is pulsed using PWM control, on Staphylococcus aureus. To evaluate the disinfection effect of Near-UV LED light, three types of Near-UV LEDs with wavelengths of 395 nm, 385 nm, and 365 nm were installed within a sealed space inside an incubator and energized with a forward current of 1000 mA and a forward voltage of 3.6 V, and the disinfection rate under each type of light was assessed. Additionally, the disinfection effect was evaluated when the same three types of Near-UV LEDs were pulsed with a 50% duty cycle. As a result, 100% disinfection was achieved with 365 nm Near-UV LED direct-current irradiation for 120 seconds, and a 93% disinfection rate was obtained with pulsed irradiation for 150 seconds.

关键词： Radiation effects Power demand Lighting Pulse width modulation Aerospace electronics Light emitting diodes

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electrical Characteristic and Power Fluctuations of GAA Si NS CFETs by Simultaneously Considering Six Process Variation Factors

IEEE Open Journal of Nanotechnology

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IEEE Open Journal of Nanotechnology 2023年 4卷 229-238页

作者： Kola, Sekhar Reddy Li, Yiming National Yang Ming Chiao Tung University Parallel and Scientific Computing Laboratory Electrical Engineering and Computer Science International Graduate Program Hsinchu300093 Taiwan Parallel and Scientific Computing Laboratory National Yang Ming Chiao Tung University Hsinchu300093 Taiwan National Yang Ming Chiao Tung University Institute of Communications Engineering Hsinchu300093 Taiwan National Yang Ming Chiao Tung University Institute of Biomedical Engineering Hsinchu300093 Taiwan National Yang Ming Chiao Tung University Department of Electronics and Electrical Engineering Hsinchu300093 Taiwan

Characteristic variability induced by process variation effect (PVE) is one of technological challenges in semiconductor industry. In this work, we computationally study electrical characteristic and power fluctuations induced by six factors of PVE of the gate-all-around (GAA) silicon (Si) nanosheet (NS) complementary field-effect-transistors (CFETs) which are formed by vertically stacking n-FET on top of p-FET. Among the six factors, NS thickness (TNS), NS width (WNS), and gate length (LG) are identified as crucial factors contributing to large variations in device characteristics. The p-FET exhibits substantial off-state current fluctuation (about 151%) due to the bottom parasitic channel leakages. Compared with the magnitudes of dynamic and short circuit powers, the static power is marginal, but it possesses the largest fluctuation (up to 148%). If we assume that each factor of PVE has the same probability distribution as the others and all are mutually independent, the statistical sum of their power fluctuations will exhibit more than 50% overestimations, compared with the results when all factors are considered simultaneously. © 2020 IEEE.

关键词： III-V semiconductors

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Learning-based identification of malicious circuits for trustworthy IoT systems 5

Learning-based identification of malicious circuits for trus...

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5th International Symposium on Instrumentation Systems, Circuits and Transducers, INSCIT 2021

作者： Coelho, Frederico Alves, Evandro Arias-Garcia, Janier Torres, Frank Sill Graduate Program in Electrical Engineering Department of Electronic Engineering MG Belo Horizonte31270-901 Brazil Department of Electronic Engineering MG Belo Horizonte31270-901 Brazil Institute for the Protection of Maritime Infrastructures of German Aerospace Center Germany Graduate Program in Electrical Engineering MG Belo Horizonte31270-901 Brazil

ISBN: (纸本)9781728197265

Trustworthiness is an important aspect for systems for IoT application, especially when it comes to solutions in the domains of security or privacy. Integrated circuits are an essential element of IoT systems, and thus, an attractive target. Therefore, one has to assure over the complete design and fabrication cycle, that no harmful changes have been made to the circuits. This motivated several researchers to focus on the subject of reverse engineering to search for malicious circuits, also known as hardware Trojans, which have been added during design or fabrication processes. Other purposes are the identification of patent violations or the support of existing verification solutions. Having in mind the complexity of this task, this work proposes an approach towards a fully automated solution that focuses on analog circuits. Therefore, an approach for identifying analog circuit structures in netlists extracted from random layouts is presented. Its feasibility is shown at the hand of current mirror circuits with varying architecture. The results indicate that the algorithm has an average accuracy of above 80%, with a maximum detection rate of 100%. © 2021 IEEE.

关键词： Machine learning

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Evaluation of Photosynthetic Rate using Bioelectric Potential Response of Plants to Blinking Illumination Stimulus

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IEEJ Transactions on Sensors and Micromachines 2021年第11期141卷 378-385页

作者： Sumiya, Tomoki Ando, Ki Department of Electrical and Electronic Engineering Graduate School of Engineering Tokyo Denki University 5 Senjyu Asahi-cho Adachi-ku Tokyo120-8551 Japan Department of Electrical and Electronic Engineering Chiba Institute of Technology 2-17-1 Tsudanuma Narashino Chiba275-0016 Japan

We are attempting to establish an evaluating and monitoring method of photosynthesis using bioelectric potential of plants. In this study, we focused on a rapid biopotential response caused by the photochemical reaction in the first and speedy part of photosynthetic reactions. We propose an active method to evaluate intensity of the photochemical reaction that controls photosynthetic rate by using a frequency response of biopotential to blinking illumination. We have investigated the relation between the frequency responses of biopotential and the intensity of the photochemical reaction evaluated by a chlorophyll fluorescence measurement of leaves. The results showed that the frequency responses of biopotential to blinking illumination correlated with the amount of photon absorption calculated from the quantum yield by the chlorophyll fluorescence measurement. Finally, we concluded that the blinking illumination induced the rapid biopotential response that was mainly attributed to the photochemical reaction. Therefore, our proposed method could be available to evaluate the photosynthetic rate with higher accuracy than conventional method using bioelectric potential response of plants. © 2021 The Institute of electrical Engineers of Japan.

关键词： Photosynthesis

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Effect of Surface Roughness on the Magnetism, Nano-indentation, Surface Energy, and electrical Properties of Co60Fe20Dy20 Films on Si (100) Substrate

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Journal of electronic Materials 2024年第4期53卷 1752-1762页

作者： Liu, Wen-Jen Chang, Yung-Huang Chiang, Chia-Chin Chen, Yuan-Tsung Lin, Chih-Chien Chen, Pei-Ling Lin, Shih-Hung Department of Materials Science and Engineering I-Shou University Kaohsiung840 Taiwan Bachelor Program in Industrial Technology National Yunlin University of Science and Technology 123 University Road Section 3 Yunlin Douliou64002 Taiwan Department of Mechanical Engineering National Kaohsiung University of Science and Technology Kaohsiung City80778 Taiwan Graduate School of Materials Science National Yunlin University of Science and Technology 123 University Road Section 3 Yunlin Douliou64002 Taiwan Department of Electronic Engineering National Yunlin University of Science and Technology 123 University Road Section 3 Yunlin Douliou64002 Taiwan

In this study, we focused on depositing a target material, cobalt-iron-dysprosium (Co60Fe20Dy20), onto silicon (Si) (100) substrates with thickness varying from 10 nm to 50 nm through a direct-current (DC) magnetron sputtering technique. The subsequent step involved subjecting the samples to an hour-long annealing process in a vacuum annealing furnace at temperatures of 100°C, 200°C, and 300°C. To assess the elemental composition of the CoFeDy films, energy-dispersive X-ray spectroscopy (EDS) was employed. An observed trend indicated an increase in low-frequency alternating-current magnetic susceptibility (χac) with the increasing thickness. Remarkably, the CoFeDy films exhibited their peak χac following annealing at 300°C, with an optimal resonance frequency of 50 Hz. After annealing at 300°C, the CoFeDy film’s surface energy peaked at 50 nm. The magnetic, electrical, and adhesive properties of the CoFeDy films were notably influenced by surface roughness at different annealing temperatures. Atomic force microscopy (AFM) analysis revealed a gradual reduction in film roughness post-annealing, corresponding to smoother surfaces indicative of a weaker domain wall pinning effect, heightened carrier conductivity, and increased liquid spreading. Collectively, these outcomes contributed to diminished χac, reduced electrical resistance, and enhanced adhesion. Graphical Abstract: (Figure presented.) © The Minerals, Metals & Materials Society 2024.

关键词： Adhesion

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Design and Evaluation of Magnetic Induction Spectroscopy Probe for pH Measurement in Fetal Hypoxia Using COMSOL Multiphysics Simulation 3rd

Design and Evaluation of Magnetic Induction Spectroscopy Pro...

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3rd International Conference on Control, Instrumentation and Mechatronics engineering, CIM 2022

作者： Halim, S. F. Abdul Zakaria, M.H. Zakaria, Z. Ahmed, A.A. Norali, A.N. Noor, A. Mohd Pusppanathan, J. Rahiman, M. H. Fazalul Muji, S. Z. Mohd Rahim, R. Abdul Biomedical Electronic Engineering Faculty of Electronic Engineering Technology Universiti Malaysia Perlis Perlis Arau02600 Malaysia Universiti Teknologi Malaysia Johor Skudai81310 Malaysia Mechatronic Engineering Program Faculty of Electrical Engineering Technology Universiti Malaysia Perlis Perlis Arau02600 Malaysia Electronic Engineering Department Faculty of Electrical and Electronic Engineering Universiti Tun Hussein Onn Johor Batu Pahat Parit Raja86400 Malaysia School of Electrical Engineering Faculty of Engineering Universiti Teknologi Malaysia Johor Skudai81310 Malaysia

ISBN: (纸本)9789811939228

Fetal Blood Sampling (FBS) is the term used to describe the current method of monitoring the foetal condition within the mother’s womb. FBS required the medical officer to make a small incision on the foetus’s head in order to collect blood for analysis of the blood pH level in order to prevent acidosis or foetal hypoxia. The FBS method, on the other hand, is invasive and increases the risk of infection for both mother and child. Magnetic Induction Spectroscopy (MIS) is a novel method for diagnosing the foetus’s pH level that is non-invasive and non-intrusive. A single channel MIS system is composed of a transmitter (TX), a receiver (RX), and an electrical circuit that generates and receives magnetic fields in response to the conductivity of the sample (blood) due to the presence of weak electrolytes (H+ and OH-). The purpose of this research is to develop and evaluate five different designs of TX-RX coils. The coils are designed using the Planar Zero Flow Coil (PZFC) concept, which allows for multiple coil configurations and input-output configurations. The results show that Design 2 open set model was the optimal coil design for MIS system probe, as well as some contributions to the pH evaluation process. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Spectroscopy

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Double Emitting Layer Structure for high efficiency and ultra-stable blue Triplet-Triplet Annihilation OLED

Double Emitting Layer Structure for high efficiency and ultr...

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SID International Symposium Digest of Technical Papers, 2023

作者： Chu, Chun-Chieh Zhuang, Yuan-Zhen Chen, Chia-Hsun Chu, Chen-Chum Lin, Bo-Yen Liu, Han-Kang Tsai, Yung-Cheng Yuan, Chih-Hsien Leung, Man-Kit Chiu, Tien-Lung Lee, Jiun-Haw Graduate Institute of Photonics and Optoelectronics and Department of Electrical Engineering National Taiwan University Taipei10617 Taiwan Department of Chemistry National Taiwan University Taipei10617 Taiwan Department of Opto-Electronic Engineering National Dong Hwa University Hualien974 Taiwan Tetrahedron Technology Corporation Taiwan WiseChip Semiconductor Inc Taiwan Department of Electrical Engineering Yuan Ze University Chungli Taoyuan32003 Taiwan

By using the double emitting layer (DEML) structure in a blue triplet-triplet annihilation organic light-emitting diode (TTA-OLED), maximum external quantum efficiency (EQEmax) of 16.1% with CIE coordinates of (0.135, 0.188) and half-lifetime of 224,000 hours at initial luminance of 1,000 cd/m2was achieved. The degradation mechanism of TTA-OLEDs was also investigated by conducting photoluminescence degradation experiment. © 2023, John Wiley and Sons Inc. All rights reserved.

关键词： Efficiency

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