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International Electron Devices Meeting (IEDM)

作者： Zefeng Xu Chun-Kuei Chen Hong-Lin Lin Yuan Gao Wei Ke Baochang Xu Pavel Dmitriev Carlan Arbiz Evgeny Zamburg Steven Touzard Xinlun Cai James Lee Suresh Venkatesan Aaron Danner Aaron Voon-Yew Thean Department of Electrical and Computer Engineering National University of Singapore (NUS) Integrative Sciences and Engineering Program NUS Graduate School Singapore Next-Generation Hybrid μ-Electronics Center (SHINE) Singapore School of Electronics and Information Technology Sun Yat-Sen University China 510275 Singapore Centre for Quantum Technologies NUS POET Technologies

We have successfully demonstrated, for the first time, an innovative back-end-of-line (BEOL) compatible electro-optic modulator and memory (EOMM) based on Lithium Niobate on Insulator (LNOI) micro-ring resonator (MRR) integrated with Ferroelectric Hafnium Zirconate Hf 0.5 Zr 0.5 O (HZO) non-volatile analog memory. High non-volatile memory and modulation performances are both achieved in a single compact device, exhibiting high extinction ratio of 13.3 dB, excellent efficiency of 66pm/V, stable nine-state switching, record-high endurance exceeding 10 9 cycles. This is accomplished by utilizing Pockels effect in LNOI, induced by electric-field effect from remnant HZO ferroelectric polarization. We studied the system implementation of reconfigurable chiplet-interposer photonic interconnect, enabled by the EOMM and EOMM with hybrid thermal-optical modulation. Our model shows a potential 70% energy efficiency improvement over conventional electrical interposer interconnect. We have also tested the integration of the EOMM with POET technologies’ 400G Tx/Rx optical interposer chip and studied a limited scale demonstration of the EOMM device.

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Three-phase AC-DC Isolated Rectifier with Single-Transformer Excited by the Common Mode Voltage and ZVS Capability

Three-phase AC-DC Isolated Rectifier with Single-Transformer...

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IEEE Energy Conversion Congress and Exposition, ECCE

作者： Vitor Freire Bezerra Montiê Alves Vitorino Jean Torelli Cardoso Paulo Peixoto Praça Graduate Program in Electrical Engineering (PPgEE–COPELE) Industrial Electronics and Machine Drive Laboratory (LEIAM) Federal University of Campina Grande (UFCG) Campina Grande Brazil Departamento de Engenharia Elétrica (DEE) Universidade Federal do Ceará (UFC) Fortaleza Brazil

ISBN: (数字)9798350376067

ISBN: (纸本)9798350376074

This paper proposes a new three-phase AC-DC isolated rectifier topology with zero-voltage switching capability. The structure is obtained by adding a single transformer that is excited by the common-mode voltage generated by the three-leg converter. It is presented an analysis of the converter's operation, covering modulation concepts and control strategies to maintain the output voltage at the desired value and guarantee unity power factor and very low total harmonic distortions. The experimental results is obtained over a 1kW prototype which provides a power factor of 0.99 and efficiency of 91.7%. The full results are presented and discussed to validate the proposed converter topology.

关键词： Reactive power Total harmonic distortion Simulation Rectifiers Prototypes Zero voltage switching Transformers Topology Voltage control Periodic structures

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FeRAM Recovery up to 200 Periods with Accumulated Endurance 1012 Cycles and an Applicable Array Circuit toward Unlimited eNVM Operations

FeRAM Recovery up to 200 Periods with Accumulated Endurance ...

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Symposium on VLSI Technology

作者： K.-Y. Hsiang J.-Y. Lee F.-S. Chang Z.-F. Lou Z.-X. Li Z.-H. Li J.-H. Chen C. W. Liu T.-H. Hou M. H. Lee Institute and Undergraduate Program of Electro-Optical Engineering National Taiwan Normal University Taiwan Institute of Electronics National Yang Ming Chiao Tung University Taiwan Graduate School of Advance Technology National Taiwan University Taiwan

Asymmetric Field Cycling Recovery (AFCR) with a low E-field is proposed for the first time to extend the endurance cycles of a ferroelectric (FE) capacitor and is experimentally demonstrated for 200 periods and accumulated to 10 12 switching cycles. Positive and negative Asymmetric minor loops (AmL) with AFCR achieve the nondegradation and complete restoration of $\triangle 2 \mathrm{P}_{\mathrm{r}}$ toward the prospect of unlimited operation. Furthermore, an FeRAM array circuit with an inverting amplifier is designed to execute the Write/Read and Recovery procedures simultaneously by AFCR scheme.

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ZeroCAN: Anomaly-Based Zero-Day Attack Detection in Vehicular CAN Bus Networks

ZeroCAN: Anomaly-Based Zero-Day Attack Detection in Vehicula...

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Euromicro Conference on Parallel, Distributed and Network-Based Processing

作者： Jonathan Rendel William Balte Harrison Kurunathan Hazem Ismail Ali Alexandre Dos Santos Roque Wagner Ourique De Morais Mahdi Fazeli Department for Computing and Electronics for Real-time and Embedded Systems (CERES) School of Information Technology (ITE) Halmstad University Halmstad Sweden CISTER/ISEP Polytechnic Institute of Porto Portugal Graduate Program of Electrical Engineering Federal University of Rio Grande do Sul - UFRGS Porto Alegre Brazil

ISBN: (数字)9798331524937

ISBN: (纸本)9798331524944

Zero-day attacks present a significant security threat to vehicular networks, exploiting vulnerabilities at both software and hardware levels within such systems that remain undiscovered. Mitigating these threats is essential to ensuring the safety and security of vehicular systems. Support Vector Machine (SVM) is a good candidate for anomaly detection of zero-day attacks within vehicular networks because it can handle highdimensional data and effectively distinguish between normal and abnormal patterns in complex and dynamic environments. A trained SVM on the normal operation data of in-vehicular network can identify flag deviations, thus making it effective in the detection of any previously unknown attack patterns, which is a common behaviour of zero-day attacks. In this paper, we introduce an anomaly detection method called “ZeroCAN” which models the behaviour of every single electronic control unit on the network with a separate SVM and a set of high-level features that capture the timing and data payload aspects of CANbus traffic. This approach achieves an anomaly detection rate of over $\mathbf{9 9 \%}$ and a false positive rate below $\mathbf{0. 0 1 \%}$ during normal operation in most cases.

关键词： Support vector machines Telecommunication traffic Feature extraction Data models Timing Security Vehicle dynamics Anomaly detection Standards Payloads

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Stability analysis of uncertain discrete-time systems with time-varying delays using Difference-Algebraic Representation

Stability analysis of uncertain discrete-time systems with t...

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European Control Conference (ECC)

作者： Má rcia L. C. Peixoto Gabriela L. Reis Pedro H. S. Coutinho Leonardo A. B. Torres Reinaldo M. Palhares Graduate Program in Electrical Engineering Federal University of Minas Gerais Brazil Graduate Program in Electrical Engineering Federal University of Minas Gerais Department of Technological Education Federal Institute of Southeast Minas Gerais Minas Gerais Brazil Department of Aerospace Engineering California Polytechnic State University CA USA Department of Electronics Engineering Federal University of Minas Gerais Minas Gerais Brazil

ISBN: (数字)9783907144077

ISBN: (纸本)9781665497336

This paper addresses the stability analysis of uncertain discrete-time delayed systems described by Difference-Algebraic Representations (DAR). This kind of representation allows dealing with rational functions of the state as well as uncertain parameters. New delay-dependent Linear Matrix Inequalities based-conditions are obtained with a parameter-dependent Lyapunov-Krasovskii functional jointly with the Wirtinger-based summation inequality and the delay-dependent Moon's inequality with a suitable augmented vector. Numerical examples illustrate the potential and effectiveness of the proposed conditions.

关键词： Discrete-time systems Codes Moon Finance Europe Stability analysis Delays

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Interval state estimation based on constraint propagation for a lithium-ion cell using an equivalent circuit model ⁎

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IFAC-PapersOnLine 2021年第3期54卷 602-608页

作者： D. Locatelli B.S. Rego G.V. Raffo D.M. Raimondo Dept. of Electrical Computer and Biomedical Engineering University of Pavia Italy Graduate Program in Electrical Engineering Dept. of Electronics Engineering Federal University of Minas Gerais Brazil

Battery management systems (BMSs) are responsible for controlling and monitoring battery operations. In order to be effective, BMSs rely on mathematical models. The parameters of these latter are usually obtained through an identification procedure which provides limited accuracy. In addition, only cell current and voltage are usually measurable. For this reason, the model states need to be estimated. In the following, we propose an interval state estimation of a lithium-ion cell when using an equivalent circuit model, taking into account bounded parametric uncertainty and measurement noise. Simulation results show the suitability of the proposed interval estimator to provide a tight enclosure of the states, which is essential for fault detection and model-based control of a lithium-ion cell.

关键词： Lithium-ion batteries battery management system state of charge estimation interval-based nonlinear state estimation

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Goral Detection System using YOLOv4 Object Detection Algorithm

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Transactions of the Korean Institute of Electrical Engineers 2022年第9期71卷 1308-1314页

作者： Lee, Han-Sung Oh, Yu-Jeong Park, Yung-Chul Lim, Sang Jin Cho, Hyun-Chong Dept. of Electronics Engineering and Interdisciplinary Graduate Program for BIT Medical Convergence Kangwon National University Korea Republic of Dept. of Interdisciplinary Graduate Program for BIT Medical Convergence Kangwon National University Korea Republic of Dept. of Electronics Engineering Kangwon National University Korea Republic of Dept. of Forest Science Kangwon National University Korea Republic of Dept. of Forest Science and Institute of Forest Science Kangwon National University Korea Republic of

Global industrialization has made human life comfortable, while causing environmental pollution. Environmental pollution has destroyed wildlife habitats, and as a result, several animals are endangered. In particular, long-tailed goral (Naemorhaedus caudatus) is an international endangered species that must be restored. A huge amount of photographic data has been accumulated through camera trap research for the restoration of endangered species. Until now, analysis of such photo data has only relied on experts, so it took a lot of time to analyze camera trap data. The goral detection system developed in this study, based on goral camera trap data, can enable goral data analysis at a faster than conventional methods. YOLOv4 was used as an object detection algorithm for goral detection. YOLOv4 is a network based on CSPDarknet53 and has improved performance through Bos (Bag of Specials) and BoF (Bag of Freebies). As a result, goral detection was possible with high accuracy and high speed. The performance of the goral detection system can be decreased by luminance at night. In this work, we propose a light invariant goral detection system by appropriately distributing day and night datasets for training YOLOv4. Test results on the night dataset showed an mAP of 0.907 and test results on the day dataset showed an mAP of 0.927. As a result, the goral detection system showed robust detection performance at night. © 2022 Korean Institute of Electrical Engineers. All rights reserved.

关键词： Cameras

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Modified Rainflow Algorithm for Lifetime Estimation of Semiconductors Devices 8

Modified Rainflow Algorithm for Lifetime Estimation of Semic...

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8th Southern Power electronics Conference and the 17th Brazilian Power electronics Conference, SPEC / COBEP 2023

作者： De Sousa, Renata Oliveira De Barros, Rodrigo Cássio Amorim, William Caires Silva Cupertino, Allan Fagner Pereira, Heverton Augusto Universidade Tecnológica Federal Do Paraná Department of Electronics Curitiba Brazil Universidade Federal Do Recôncavo da Bahia Centro de Ciências Exatas e Tecnológicas Cruz das Almas Brazil Universidade Federal de Minas Gerais Graduate Program in Electrical Engineering Belo Horizonte Brazil Universidade Federal de Juiż de Fora Department of Electrical Energy Juiz de Fora Brazil Universidade Federal de Vicosa Department of Electrical Engineering Viçosa Brazil

ISBN: (纸本)9798350321128

Reliable operation is essential for any power electronic system. Nevertheless, power electronic systems include a large number of fragile elements. Among these elements, the semiconductor devices are the most likely to fail. Recent reliability evaluation tools employ a cycle counting algorithm to compute the degradation in semiconductor devices, where the rainflow algorithm is the most popular. However, since the rainflow was first created for fatigue analysis, this algorithm presents some issues when applied for semiconductor devices. Indeed, the rainflow is unable to compute the effective heating time and time-dependent equivalent mean temperature of each thermal cycle. Besides, half-cycles are counted by conventional rainflow. However, apart from the half-cycles at the end of the data, these half-cycles should not be taken into consideration in the life consumption computation. Therefore, this work proposes a modified rainflow for the lifetime estimation of semiconductor devices. This methodology adapts the conventional rainflow to filter half-cycles and compute the effective heating time and the equivalent mean temperature. The impact of the methodology on lifetime estimation is verified in a modular multilevel converter. Besides, analyses with two distinct mission profiles are performed to evaluate the modified impact on lifetime estimation. The results demonstrated that the modified rainflow significantly affects the lifetime computation of all critical joints of an insulatedgate bipolar transistor (IGBT) module for both case studies considered. © 2023 IEEE.

关键词： cycle counting lifetime estimation modified rainflow algorithm semiconductor devices

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An Adaptive Oscillators-Based Approach to Achieve Transparent Control of a Six DoF Lower-Limb Exoskeleton

An Adaptive Oscillators-Based Approach to Achieve Transparen...

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IEEE/ASME International Conference on Mechtronic and Embedded Systems and Applications, MESA

作者： Rafhael Milanezi de Andrade Benito Lorenzo Pugliese Abolfazl Mohebbi Paolo Bonato Graduate Program of Mechanical Engineering Universidade Federal do Espírito Santo Vitória ES Brazil Department of Electronics and Telecommunication Politecnico di Torino Turin Italy Department of Mechanical Engineering Polytechnique Montreal Montreal Canada Department of Physical Medicine & Rehabilitation Harvard Medical School Spaulding Rehabilitation Hospital Boston MA USA

ISBN: (数字)9798331516239

ISBN: (纸本)9798331516246

Lower-limb exoskeletons have been effectively used in rehabilitation to reduce gait impairments. However, making the exoskeleton transparent to provide suitable net interaction torques and assist patient’s movements is yet an open challenge. In this study, we designed a torque control method based on adaptive oscillators (AOs) to reduce interaction forces with a six degree-of-freedom exoskeleton, named the ExoRoboWalker. A synchronization layer was designed with a pool of AOs to estimate user’s gait phase, and a baseline torque controller was introduced to generate a torque profile based on user-robot interaction during the previous gait cycles. A zero-torque controller was used in parallel to the main torque controller with the objective of improving users’ control of the system and their balance. The proposed controller was experimentally evaluated in six healthy subjects who walked with the exoskeleton for 200 gait strides at different walking speeds. A transparent controller we previously implemented based on a zero-impedance model was also evaluated and results were compared with the new controller. The controller based on AOs was able to reduce the average interaction torques by 40% at the highest gait speed of 0.8 m/s relative to the zero-impedance controller we previously implemented.

关键词： Knee Ankle Torque Exoskeletons Torque control Control systems Stability analysis Synchronization Hip Standards

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Single-molecule localization microscopy of expanded mammalian centrioles unravels the ultrastructural constitution of distal appendages

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Biophysical journal 2023年第3S1期122卷 17a页

作者： Chang, Ting-Jui B Hsu, Jimmy C-C Yang, Tony Physics National Taiwan University Taipei City Taiwan Nano Science and Technology Program Taiwan International Graduate Program Academia Sinica Taipei City Taiwan Electrical Engineering National Taiwan University Taipei City Taiwan Electrical Engineering National Taiwan University Taipei City Taiwan Graduate Institute of Biomedical Electronics and Bioinformatics National Taiwan University Taipei City Taiwan

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