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43rd International conference on computer-aided design, ICCAD 2024

作者： Bao, Tianyou He, Pengzhou Xie, Jiafeng Department of Electrical and Computer Engineering Villanova University VillanovaPA19085 United States

ISBN: (纸本)9798400710773

The widespread adoption of the FHE (Fully Homomorphic Encryption) CKKS (Cheon-Kim-Kim-Song) encryption algorithm is stunted by its slow software implementation, driving the need for efficient hardware acceleration solutions. This paper presents a novel approach to address the challenge by optimizing a segment of the CKKS encryption and decryption process. Using the Residue Number system (RNS), the inputs are encoded into 32-bit representations and processed through the number theoretic transform (NTT). This innovative strategy reduces the utilities of the hardware resources and also accelerates calculations. This unified calculation methodology is designed to adapt inputs of diverse bit widths, seamlessly decoding them back into their original format after the CRT calculation, thereby significantly enhancing the throughput of calculations. We hope this work advances privacy-preserving computing in resource-constrained environments. © 2024 Copyright is held by the owner/author(s).

关键词： Number theory

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Analysis and Comparison of Isolated High-Gain High-Voltage DC/DC Converters for Offshore Wind Farm Collection and Integration

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ieee TRANSACTIONS ON POWER ELECTRONICS 2024年第7期39卷 8757-8769页

作者： Ye, Yanan Zhang, Xiaotian Gao, Chong Wang, Xianwei Wang, Yue Yang, Xu Xi An Jiao Tong Univ Dept Elect Engn Xian 710049 Peoples R China Xian XJ Power Elect Technol Co Ltd Xian Peoples R China

With the vigorous development of offshore wind energy, two-stage voltage step-up HVdc transmission has become a better choice compared with other transmission methods due to the lower cost and higher efficiency. It is essential to step-up the medium voltage (MV) level at the collection grid to the high voltage (HV) level at the export line. Therefore, the research on HV dc/dc converters has received widespread attention. This article introduces two modular multilevel dc/dc converters with high gain, HV, and galvanic isolation, which can be applied to connect the MVdc grid and HVdc grid in offshore wind energy systems. The topologies, operation principles, and control strategies of the two converters are illustrated in the article. The simulation based on power systems computer aided design/electromagnetic transients including DC (PSCAD/EMTDC) and hardware in loop experiment based on real-time digital simulation (RTDS) is completed. The operation principle and control strategy are validated by the simulation results and experiment results. The comparison results in terms of current stresses, costs, and power losses between these two converters and the two representative topologies previously proposed are presented. Then, the overall performance of each topology is evaluated based on the comparison results.

关键词： Topology Voltage Wind energy HVDC transmission Costs Wind farms Transformers High voltage (HV) dc/dc converter HVdc grid medium voltage dc (MVdc) grid offshore wind energy system

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control of Grid-Connected Inverters Using PLL for Synchronization and Harmonic Mitigation

Control of Grid-Connected Inverters Using PLL for Synchroniz...

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2025 ieee Texas Power and Energy conference, TPEC 2025

作者： Yousefpour, Kamran Yousefpour, Mohammad Molla, Seyyed Javad Hosseini Andani, Mansour Taheri Varnousdaderani, Sepideh Alaei Andani, Hamid Taheri Mississippi State University Department of Electrical and Computer Engineering United States Azad University Iran Babol Noshirvani University of Technology Department of Electrical and Computer Engineering Iran School of Manufacturing Systems and Networks Arizona State University United States Azad University Department of Computer Engineeering Iran Isfahan University of Technology Department of Electronic Engineering Iran

ISBN: (纸本)9798331541125

This paper presents the design and simulation of a single-phase grid-connected inverter control system, focusing on enhancing power quality and dynamic performance. The control system comprises a resonant controller for real and reactive power regulation, ensuring sinusoidal current injection into the grid. Additionally, a Phase-Locked Loop (PLL) is incorporated to improve synchronization with the grid voltage, generating accurate reference signals for current control and mitigating harmonic disturbances. The PLL design leverages specific gain parameters, μ1,μ2, and μ3, optimized for a critically damped response. A comprehensive simulation study evaluates the system's performance under different conditions, including soft-start operation, transient power commands, and grid voltage distortion with low-order harmonics (Sth, 7th, LIth, and 13th). Results highlight the system's robust dynamic response, low total harmonic distortion (THD), and effective harmonic attenuation, demonstrating its suitability for grid-connected distributed energy resource (DER) applications. This work provides a scalable and reliable control framework for next-generation inverter systems operating in modern, complex grid environments. © 2025 ieee.

关键词： Harmonic distortion

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computer-aided integrated design technology of electromechanical products based on meta-action decomposition 2

Computer-aided integrated design technology of electromechan...

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2nd ieee International conference on Power, Electronics and computer Applications, ICPECA 2022

作者： Wang, Yafei Liu, Bing Wang, Lixin Zibo Technician College Shandong Zibo255000 China

ISBN: (纸本)9781665442763

This article focuses on the long-standing quality problems of electromechanical products, such as poor accuracy, short accuracy life, large performance fluctuations, and frequent failures. This article takes electromechanical products as the research object, based on the definition of the meta-action unit system and omni-directional modeling, and the accuracy The predictive control of the four key quality characteristics of, precision life, performance stability and reliability is the core. Based on the actual situation, the main points of the computer-aided integration technology design of mechatronics products are studied, and the development of mechatronics technology is discussed first. Secondly, it analyzes the application of computer-aided technology in mechatronics design. Using large-scale system research methods to systematically study the definition and modeling of meta-action units, the formation mechanism of key quality characteristics, the fusion control mechanism of quality characteristics, and the coupling and decoupling technology of whole machine quality characteristics based on meta-action units, predictive control models and other key sciences For the problem, the numerical control machine tool is used as a typical case for theoretical verification and application, and a set of key quality characteristic analysis and predictive control methods based on meta-action units is proposed for electromechanical products, which provides theoretical and technical support for essentially ensuring the quality of electromechanical products. © 2022 ieee.

关键词： Large scale systems

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design a 4DOFs Delta Parallel Robot for Chili Destemming 4

Design a 4DOFs Delta Parallel Robot for Chili Destemming

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4th International conference on computer, control and Robotics (ICCCR)

作者： Feng, Luojun Xu, Maomao Yan, Jiasheng Niu, Shuxian Wu, Zhizheng Shanghai Univ Shanghai Peoples R China

ISBN: (纸本)9798350373141;9798350373158

Nowadays, chili destemming poses a technical challenge in the chili processing industry, so the research on chili destemming robot holds a significant value. This paper presents the design of the mechanical structure, control system, and visual positioning algorithm of a chili destemming machine. Firstly, a chili destemming machine featuring a (3T1R) Delta parallel robot and an end-effector destemming device is designed. Subsequently, the robot's kinematics and dynamics are analyzed, and a nonlinear-model-predictive-control (NMPC) algorithm is proposed to control the robot system and verify the system's rapid dynamic response characteristics. Finally, a chili stem cutting and positioning algorithm is devised to determine spatial cutting points and directions based on the training outcomes of the Yolact instance segmentation model, and its high accuracy is demonstrated.

关键词： chili destemming (3T1R) Delta robot NMPC control chili stem positioning

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A Hybrid Energy Storage Converter control Method Based on Dual-Loop LADRC 7

A Hybrid Energy Storage Converter Control Method Based on Du...

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7th ieee International conference on Information systems and computer aided Education, ICISCAE 2024

作者： Li, Meng Meng, Xiangrui Dalian Ocean University Dalian China

ISBN: (纸本)9798350350760

Hybrid energy storage converters can enhance photovoltaic power systems’ dynamic response and stability. However, traditional linear controllers exhibit deficiencies when controlling bidirectional DC-DC converters. To address issues such as DC bus voltage sensitivity to nonlinear converter noise, photovoltaic output power, and load disturbances, a control strategy for hybrid energy storage converters based on dual-loop LADRC is proposed. A disturbance model of the main circuit is established by analyzing the operation principles of the hybrid energy storage converters. The design of a voltage-current dual-loop LADRC controller is completed based on this disturbance model, integrated with power division to achieve an overall control strategy for hybrid energy storage converters. Simulation results demonstrate that compared to traditional proportional-integral controllers, the dual-loop LADRC-based control strategy reduces DC bus voltage amplitude fluctuations by 39.4% and decreases settling time by 25.0%, exhibiting superior dynamic response and disturbance rejection capabilities in power response and DC bus voltage support. ©2024 ieee.

关键词： Disturbance rejection

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Trajectory design and Resource Allocation for UAV-Assisted Computation Offloading 7

Trajectory Design and Resource Allocation for UAV-Assisted C...

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7th ieee International conference on Information systems and computer aided Education, ICISCAE 2024

作者： Xu, Yunxin Wang, Jiale Wang, Junhao Que, Xingle Lu, Dandan School of Computer Science and Technology Southwest University of Science and Technology Mianyang China Dept. Engineering Technology Center Southwest University of Science and Technology Mianyang China

ISBN: (纸本)9798350350760

This paper studies air-ground cooperative communication based on unmanned aerial vehicles (UAVs) and device-to-device (D2D) technology. This field has become a research hotspot due to its susceptibility to passive eavesdropping and privacy leakage. To enhance data transmission security, this paper proposes a full-duplex UAV-assisted scheme to address potential ground eavesdropping risks in UAV-assisted computation offloading tasks. The scheme transmits interference signals while receiving computation tasks to counteract eavesdroppers. Given the limited energy of UAVs and the inadequacies of existing energy optimization research, this paper establishes a UAV-assisted mobile edge computing (MEC) communication system model. To address the non-convex optimization problem within the model, a successive convex approximation algorithm is employed for simplification and decomposition. User scheduling, power allocation, and UAV trajectory design subproblems are solved through an alternating iteration method. Simulation results validate that the proposed method can effectively improve the system's secure communication performance even in the presence of uncertain eavesdropper locations. ©2024 ieee.

关键词： Convex optimization

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design and Application of English Vocabulary computer aided Learning system Based on Associative Memory 6

Design and Application of English Vocabulary Computer Aided ...

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6th ieee Eurasian conference on Educational Innovation, ECEI 2023

作者： Chen, Jun English Language Center Fuzhou Melbourne Polytechnic Fuzhou China Business School Universiti Kuala Lumpur Kuala Lumpur Malaysia

ISBN: (纸本)9798350334289

The improvement of students' English and application largely depends on words. Based on similar association law, comparative thinking method, and similar association method, this study is carried out to analyze the mechanism of English word associative memory and design an auxiliary system of English word associative memory using computer software. The experimental teaching results show that the system can effectively improve the students' word memory effect and learning efficiency by 45%. © 2023 ieee.

关键词： Students

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Factor Graph Accelerator for LiDAR-Inertial Odometry (Invited Paper) 22

Factor Graph Accelerator for LiDAR-Inertial Odometry (Invite...

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ieee/ACM 41st International conference on computer aided-design (ICCAD)

作者： Hao, Yuhui Yu, Bo Liu, Qiang Liu, Shaoshan Zhu, Yuhao Tianjin Univ Tianjin Peoples R China PerceptIn Santa Clara CA USA Univ Rochester Rochester MN USA

ISBN: (纸本)9781450392174

Factor graph is a graph representing the factorization of a probability distribution function, and has been utilized in many autonomous machine computing tasks, such as localization, tracking, planning and control etc. We are developing an architecture with the goal of using factor graph as a common abstraction for most, if not, all autonomous machine computing tasks. If successful, the architecture would provide a very simple interface of mapping autonomous machine functions to the underlying compute hardware. As a first step of such an attempt, this paper presents our most recent work of developing a factor graph accelerator for LiDAR-Inertial Odometry (LIO), an essential task in many autonomous machines, such as autonomous vehicles and mobile robots. By modeling LIO as a factor graph, the proposed accelerator not only supports multi-sensor fusion such as LiDAR, inertial measurement unit (IMU), GPS, etc., but solves the global optimization problem of robot navigation in batch or incremental modes. Our evaluation demonstrates that the proposed design significantly improves the real-time performance and energy efficiency of autonomous machine navigation systems. The initial success suggests the potential of generalizing the factor graph architecture as a common abstraction for autonomous machine computing, including tracking, planning, and control etc.

关键词： factor graph autonomous machine computing computer architecture robotics

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Research on Intelligent Oral English Teaching Training system Based on computer Multimedia Technology 6

Research on Intelligent Oral English Teaching Training Syste...

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2023 ieee 6th International conference on Information systems and computer aided Education, ICISCAE 2023

作者： Sun, Lihua Liaoning Petrochemical College Liaoning Jinzhou China

ISBN: (纸本)9798350313444

This paper proposes a feature-based oral English language correction system. The system solves problems that cannot be corrected and fed back to the learner in a timely manner. The whole speech recognition system includes speech feature extraction and correction. Error correction is the key link of the whole equipment. It performs distortion operations on the detected results and identifies inaccurate pronunciations. The effect of speech comparison can be obtained through feedback path and sequential mode. Rough mode is used to control the effect, so as to realize the correction of speech. The experimental results show that this method can quickly and accurately identify correct pronunciation, and can quickly achieve speech correction. It realizes the scientific and accurate pronunciation correction system of spoken English. © 2023 ieee.

关键词： English accent oral training speech feature extraction speech recognition correction

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