检索结果-内蒙古大学图书馆

IEEE International Symposium on Multimedia

作者： Michael G. Adam Sebastian Eger Martin Piccolrovazzi Maged Iskandar Joern Vogel Alexander Dietrich Seongjien Bien Jon Skerlj Abdeldjallil Naceri Eckehard Steinbach Alin Albu-Schaeffer Sami Haddadin Wolfram Burgard Department of Computer Engineering School of Computation Information and Technology Chair of Media Technology Technical University of Munich Munich Germany Institute of Robotics and Mechatronics German Aerospace Center (DLR) Wessling Germany Department of Computer Engineering School of Computation Information and Technology Technical University of Munich Chair of Robotics and Systems Intelligence Munich Institute of Robotics and Machine Intelligence (MIRMI) Munich Germany Engineering Department University of Technology Nuremberg Nuremberg Germany

As labor shortage increases in the health sector, the demand for assistive robotics grows. However, the needed test data to develop those robots is scarce, especially for the application of active 3D object detection, where no real data exists at all. This short paper counters this by introducing such an annotated dataset of real environments. The captured environments represent areas which are already in use in the field of robotic health care research. We further provide ground truth data within one room, for assessing SLAM algorithms running directly on a health care robot.

关键词：

来源：评论

学校读者我要写书评

暂无评论

A Fuzzy Logic Controller for a Photovoltaic System Relying on a Closed-Loop DC-DC Converter

A Fuzzy Logic Controller for a Photovoltaic System Relying o...

引用

International Conference on Science Technology engineering and Management (ICONSTEM)

作者： B. Chandrashekar Jayarama Pradeep Muthukumaran. M M. Sivasubramanian K. Lakshmi Khandan Joshuva Arockia Dhanraj Department of Computer Science Engineering St Martin's Engineering College Hyderabad Telangana India Department of Electrical and Electronics Engineering St. Joseph's College of Engineering Chennai Tamil Nadu India Department of Electrical and Electronics Engineering Karpagam college of Engineering Coimbatore Tamil Nadu Department of Electrical and Electronics Engineering Srivenkateswara College of Engineering and Technology Thiruvallur Tamil Nadu India Department of Electrical and Electronics Engineering Madanapalle Institute of Technology and Science Madanapalle Andhra Pradesh India Department of Mechatronics Engineering Centre for Automation and Robotics (ANRO) Hindustan Institute of Technology and Science Chennai Tamil Nadu India

ISBN: (数字)9798350365092

ISBN: (纸本)9798350365108

A DC-DC converter that can handle a lot of different power changes. The experts in this study discovered that adding a fuzzy logic circuit helped the system work better. It makes a big difference in how well and consistently the PV system works that the FLC controls the output power of the converter. Because the FLC works with Microsoft Excel, more people can use this powerful tool for less money and with less trouble. The FLC cuts down on “overshoot,” “settling time,” and steady-state error, as shown in simulations that test how well the controller works. This study may have made it easier for people to start making “fuzzy logic controllers” and make them better. This will have a big effect on how far we get in making energy systems that work better and are more stable. Further investigation could be conducted to determine whether or not these concepts are feasible and how they would enhance the FLC in different types. These DC-DC converters have closed loops in their circuitry.

关键词： Fuzzy logic Photovoltaic systems DC-DC power converters Control systems Energy efficiency Steady-state Spreadsheet programs

来源：评论

学校读者我要写书评

暂无评论

Controller Verification of a Smart-Grid Compatible 200 kHz Single-stage Photovoltaic Microinverter

Controller Verification of a Smart-Grid Compatible 200 kHz S...

引用

Annual IEEE Conference on Applied Power Electronics Conference and Exposition (APEC)

作者： Daniel Zakzewski Rakesh Resalayyan Arafat Hasnain Chanaka Singhabahu Alireza Khaligh Department of Electrical and Computer Engineering Maryland Power Electronics Laboratory The Institute for Systems Research University of Maryland College Park United States

This paper presents control system design, implementation, and experimental validation of a single-stage 400 W, 200 kHz solar photovoltaic (PV) microinverter using hardware-in-the-loop (HIL) and hardware testing. The selected circuit topology is based on a Gallium Nitride (GaN) direct-matrix based dual active bridge (DAB) converter with a low voltage active power decoupler (APD) circuit. Control performance is verified, smart-grid compatibility is tested, and circuit operation is confirmed. Controller HIL (CHIL) is shown to aid in a complex power electronics system design by 1) enabling detailed control development prior to hardware implementation, 2) expanding the use of automated testing, and 3) increasing confidence in control performance prior to prototype testing. Altogether, these factors make HIL a valuable tool in complex power electronic designs.

关键词：

来源：评论

学校读者我要写书评

暂无评论

A Moving Target DDoS Defense Approach in Consortium Blockchain

引用

IEEE Transactions on Dependable and Secure Computing 2025年

作者： Gai, Keke Zhang, Guolei Jiang, Peng Zhu, Liehuang Choo, Kim-Kwang Raymond Beijing Institute of Technology School of Cyberspace Science and Technology Beijing100081 China Beijing Institute of Technology School of Computer Science and Technology Beijing100081 China University of Texas at San Antonio Department of Information Systems and Cyber Security Department of Electrical and Computer Engineering San AntonioTX78249 United States

Although consortium blockchain has an identification mechanism, the captured internal clients are potentially threatening internal blockchain nodes. Internal Distributed Denial-of-Service (DDoS) attacks threaten the specific nodes in consortium blockchain, e.g., the executor, consensus, and committer nodes. Typical attack methods may include SYN Flooding and ACK Flooding and deny normal transaction service by sending many invalid transactions and blocks. In this work, we have proposed an organization collaboration-based DDoS defense approach and a Deep Q-learning (DQN)-based Moving Target Defense (MTD) for changing attack surface of victims in consortium blockchain. On one hand, contracts are used to synchronize attack information obtained from organizations, e.g., bots' IP addresses and public keys. On the other hand, we have developed a DQN-based MTD defense mechanism for organizations to change the attack surface of victims in order to mitigate the malicious traffic, in the case of missing detections of bots. Our approach applies a multi-stage game to reflect interactions between attackers and defenders. The evaluation results have demonstrated that our approach could effectively mitigate DDoS attacks in consortium blockchain. © 2025 IEEE.

关键词： Denial-of-service attack

来源：评论

学校读者我要写书评

暂无评论

Vision-based indoor localization of nano drones in controlled environment with its applications

arXiv

引用

arXiv 2024年

作者： Singh, Simranjeet Kumar, Amit Chemban, Fayyaz Pocker Fernandes, Vikrant Penubaku, Lohit Arya, Kavi Electrical Engineering Department Indian Institute of Technology Bombay Mumbai India Embedded Real-Time Systems e-Yantra Lab Indian Institute of Technology Bombay Mumbai India Computer Science and Engineering Department Indian Institute of Technology Bombay Mumbai India

Navigating unmanned aerial vehicles in environments where GPS signals are unavailable poses a compelling and intricate challenge. This challenge is further heightened when dealing with Nano Aerial Vehicles (NAVs) due to their compact size, payload restrictions, and computational capabilities. This paper proposes an approach for localization using off-board computing, an off-board monocular camera, and modified open-source algorithms. The proposed method uses three parallel proportional-integral-derivative controllers on the off-board computer to provide velocity corrections via wireless communication, stabilizing the NAV in a custom-controlled environment. Featuring a 3.1cm localization error and a modest setup cost of 50 USD, this approach proves optimal for environments where cost considerations are paramount. It is especially well-suited for applications like teaching drone control in academic institutions, where the specified error margin is deemed acceptable. Various applications are designed to validate the proposed technique, such as landing the NAV on a moving ground vehicle, path planning in a 3D space, and localizing multi-NAVs. The created package is openly available at https://***/simmubhangu/eyantra drone to foster research in this field. © 2024, CC BY.

关键词： Drones

来源：评论

学校读者我要写书评

暂无评论

Trust-Aware Resilient Control and Coordination of Connected and Automated Vehicles

Trust-Aware Resilient Control and Coordination of Connected ...

引用

International Conference on Intelligent Transportation

作者： H.M. Sabbir Ahmad Ehsan Sabouni Wei Xiao Christos G. Cassandras Wenchao Li Department of Electrical & Computer Engineering Division of Systems Engineering Boston University Boston MA USA Computer Science & Artificial Intelligence Laboratory Massachusetts Institute of Technology Cambridge MA USA

We address the security of a network of Connected and Automated Vehicles (CAVs) cooperating to navigate through a conflict area. Adversarial attacks such as Sybil attacks can cause safety violations resulting in collisions and traffic jams. In addition, uncooperative (but not necessarily adversarial) CAVs can also induce similar adversarial effects on the traffic network. We propose a decentralized resilient control and coordination scheme that mitigates the effects of adversarial attacks and uncooperative CAVs by utilizing a trust framework. Our trust-aware scheme can guarantee safe collision free coordination and mitigate traffic jams. Simulation results validate the theoretical guarantee of our proposed scheme, and demonstrate that it can effectively mitigate adversarial effects across different traffic scenarios.

关键词：

来源：评论

学校读者我要写书评

暂无评论

GaN-Based 400V/48V DC-DC Converter with 97% Efficiency and PCB Magnetics for Automotive Applications

GaN-Based 400V/48V DC-DC Converter with 97% Efficiency and P...

引用

Annual IEEE Conference on Applied Power Electronics Conference and Exposition (APEC)

作者： Pranav Raj Prakash Ahmed Nabih Shuo Wang Pham Phu Hieu Yizhi Ruan Qiang Li Center for Power Electronics Systems The Bradley Department of Electrical and Computer Engineering Virginia Polytechnic Institute and State University Blacksburg VA USA

Electric vehicles are attracting great attention with their 48V electrification system. In this paper, the design of a two-stage 400V/48V automotive DC-DC converter based on PCB magnetics is presented. A two-phase buck converter with a coupled inductor is used as the first stage to perform voltage regulation and guarantee good load transient performance. The second stage is an LLC resonant converter with a matrix transformer which provides isolation and behaves as a step-down DC transformer (DCX). The switching frequency is pushed to 500kHz to help reduce converter size and weight. By pushing the operation to high frequencies, the windings of the transformer of the LLC converter and those of the coupled inductor of the buck converter are integrated and built into the PCB. This not only improves the power density, but also minimizes the use of labor-intensive components/processes to enable truly automated manufacture. The thermal management for such converters is especially challenging due to the harsh environments it is situated in. This is accomplished using a custom-engraved aluminum baseplate to provide low thermal resistivity and increase converter reliability. The converter can achieve an efficiency of 97% and a power density of 5 kW/L.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Flicker Visibility With Different Spectra of White Light

引用

IEEE Transactions on Industry Applications 2025年

作者： Kukacka, Leos Hergesel, Jan Necasek, Jakub Bilek, Petr Vik, Michal Stiegler, Robert Pourarab, Morteza Meyer, Jan Drapela, Jiri Technical University of Liberec Faculty of Mechatronics Informatics and Interdisciplinary Studies Institute-of Mechatronics and Computer Engineering Liberec Czech Republic Technical University of Liberec Faculty of Textile Engineering Department of Material Engineering Czech Republic Technische Universität Dresden Institute of Electrical Power Systems and High Voltage Engineering Chair of Electrical Power Supply Dresden01069 Germany Brno University of Technology Faculty of Electrical Engineering and Communications Brno61600 Czech Republic

The standard flickermeter (voltage flickermeter) algorithm commonly used for the evaluation of flicker severity in current electromagnetic compatibility standards originates from the 1980 s. It was developed to mimic irritation of an average human observer by flickering incandescent lamp as a reference light source and optimized to voltage fluctuations caused by arc furnaces. However, the algorithm is questionable as the situation in the grid changed since the 1980 s;many modern devices are being connected to the grid, creating voltage distortion patterns which are not properly recognized by the voltage flickermeter. In addition, incandescent lamps have been largely replaced by discharge lamps and later by LEDs. Transitioning the algorithm from incandescent lamp light to LED light requires detailed revision of every part of the algorithm. This paper is concerned with verifying the frequency weighting function of the average human observer which is one of the bases of the voltage flickermeter, as well as of the derived light flickermeter. Flicker sensitivity of 34 human observers is measured with two different light sources (LED warm and neutral white, incandescent lamp) and compared with the frequency weighting function used in the current specification of the flickermeters in standards. Finally, an optimization of the weighting function is proposed based on the findings. © 1972-2012 IEEE.

关键词： Flickering

来源：评论

学校读者我要写书评

暂无评论

Wireless Federated Learning With Hybrid Local and Centralized Training: A Latency Minimization Design

引用

IEEE Journal on Selected Topics in Signal Processing 2023年第1期17卷 248-263页

作者： Huang, Ning Dai, Minghui Wu, Yuan Quek, Tony Q. S. Shen, Xuemin State Key Lab of Internet of Things for Smart City China University of Macau Department of Computer and Information Science China University of Macau State Key Laboratory of Internet of Things for Smart City The Department of Computer and Information Science China Zhuhai Um Science and Technology Research Institute Zhuhai519031 China Singapore University of Technology and Design Information Systems Technology and Design Pillar 487372 Singapore National Cheng Kung University Taiwan University of Waterloo Department of Electrical and Computer Engineering WaterlooONN2L 3G1 Canada

Wireless federated learning (FL) is a collaborative machine learning (ML) framework in which wireless client-devices independently train their ML models and send the locally trained models to the FL server for aggregation. In this paper, we consider the coexistence of privacy-sensitive client-devices and privacy-insensitive yet computing-resource constrained client-devices, and propose an FL framework with a hybrid centralized training and local training. Specifically, the privacy-sensitive client-devices perform local ML model training and send their local models to the FL server. Each privacy-insensitive client-device can have two options, i.e., (i) conducting a local training and then sending its local model to the FL server, and (ii) directly sending its local data to the FL server for the centralized training. The FL server, after collecting the data from the privacy-insensitive client-devices (which choose to upload the local data), conducts a centralized training with the received datasets. The global model is then generated by aggregating (i) the local models uploaded by the client-devices and (ii) the model trained by the FL server centrally. Focusing on this hybrid FL framework, we firstly analyze its convergence feature with respect to the client-devices' selections of local training or centralized training. We then formulate a joint optimization of client-devices' selections of the local training or centralized training, the FL training configuration (i.e., the number of the local iterations and the number of the global iterations), and the bandwidth allocations to the client-devices, with the objective of minimizing the overall latency for reaching the FL convergence. Despite the non-convexity of the joint optimization problem, we identify its layered structure and propose an efficient algorithm to solve it. Numerical results demonstrate the advantage of our proposed FL framework with the hybrid local and centralized training as well as our proposed alg

关键词： Information management

来源：评论

学校读者我要写书评

暂无评论

A Novel Tactile Sensing Skin for Surface Perception

引用

IEEE Sensors Journal 2025年

作者： Das, Subham Thiyagarajan, Karthick Kodagoda, Sarath Krishnan, Athul Bhattacharjee, Mitradip Indian Institute of Science Education and Research Bhopal i-Labs Electrical Engineering and Computer Science Department Madhya Pradesh 462066 India Centre for Advanced Manufacturing Technology School of Engineering Design and Built Environment PenrithNSW2751 Australia UTS Robotics Institute University of Technology Sydney Australia SydneyNSW2007 Australia

Humans employ a fusion of pressure and temperature signals to perceive tactile stimuli. While replicating the complexity of human tactile sensing poses challenges, advancements in artificial tactile sensing skins play a crucial role in the progress of robotics and prosthetics. Here, we present a novel tactile sensing skin designed for the perception of diverse surfaces. It utilizes a microstructured porous tactile sensor, exhibiting notable sensitivity at 21.5 kPa-1 under low-pressure conditions and 2.5 kPa-1 in high-pressure scenarios. The sensor also boasts an impressively low detection limit of 2.5 Pa, allowing for discernment of subtle pressure variations. Simultaneously, we utilize a flexible temperature sensor exhibiting a sensitivity of 0.58 % ∘C-1 and swift response attributes to facilitate the detection of radiated heat from diverse surfaces. The incorporation of a multilayer perceptron algorithm into the developed glove-like system, equipped with tactile and temperature sensors, achieves 87% accuracy in classifying eleven distinct surfaces. © 2001-2012 IEEE.

关键词： Tactile sensors

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：