检索结果-内蒙古大学图书馆

IEEE Frontiers in Education Conference 2008

作者： Pastor, Rafael Ros, Salvador Hernandez, Roberto Read, Timothy Castro, Manuel National Distance Learning University of Spain (UNED) Spain Centre for Technological Innovation and Development National Distance Learning University of Spain (UNED) Spain Computer Science Faculty National Distance Learning University of Spain (UNED) Spain Electrical Engineering Electronic and Control Department National Distance Learning University of Spain (UNED) Spain

ISBN: (纸本)9781424419692

Eight years on from the start of the development of the aLF (active Learning Framework) platform, by the Innova group (in the LINED, Spain), we have approximately 100,000 users grouped in more than 500 virtual learning communities. The development of an integrated space of communities and courses has provided a unified model adapted to the new European Higher Education Area (EHEA). In the first part of the paper the fundamentals of aLF are discussed, and the service model provided based on the concept of virtual community. Following the description of aLF, how the official digital repository (based on an application of Fedora) has been integrated into aLF to allow professors and students to search for (and retrieve) digital content (audio and video generated from more than 30 years of LINED activity and references from papers) is described. The paper will discuss the application developed together with the advantages of using it: recorded classes reused in the courses, access to institutional library material in a distance education model and a simple way of consulting related content to help students in their learning activities.

关键词： Digital content E-learning Federated Repositories Virtual communities

来源：评论

学校读者我要写书评

暂无评论

Measurement-based Small Signal Modeling for the Smart Power IC

Measurement-based Small Signal Modeling for the Smart Power ...

引用

11th International Conference on electrical Machines and Systems(第11届国际电机与系统会议)

作者： Hee-Jun Kim Hai Xu Hoon Kim School of Electrical Engineering and Computer Science Hanyang University Ansan-si 426-791 Korea Department of Electronics Electrical Control and Instrumentation Engineering Hanyang University

The small signal model of a smart power IC is one of the most important elements for a power system design. This paper presents a measurement-based small signal modeling method for the smart power IC. This method is referred to as sampling the duty cycle output and the control signal input of the smart power IC with the IC's switching frequency. The duty ratio and the control signal are converted into digital data and the data are then transferred into a computer for processing. The smart power IC's transfer function and dynamic model are finally synthesized from measurement data. The result of the modeling experiment is presented for the continuous conduction mode. The practicality and effectiveness are verified through the experiment.

关键词： Power measurement Integrated circuit modeling Power integrated circuits Power system modeling Power system measurements Signal design Frequency measurement Signal sampling Switching frequency Signal processing

来源：评论

学校读者我要写书评

暂无评论

Smartphone, PDA and mobile embedded device clients of biotelemetric system for monitoring of life functions

Smartphone, PDA and mobile embedded device clients of biotel...

引用

International Conference on Innovations in Information Technology

作者： Ondrej Krejcar Jindrich Cernohorsky Petr Fojcik Dalibor Janckulik Jan Martinovic Centre for Applied Cybernetics Faculty of Electrical Engineering and Computer Science Department of Measurement and Control Technical University of Ostrava Ostrava Czech Republic Centre for Applied Cybernetics Faculty of Electrical Engineering and Computer Science Department of Computer Science Technical University of Ostrava Ostrava Czech Republic

Existence of software platform, which will allow us to monitor the patients' bio-parameters and provide us with services which help with full health care, is more than relevant these days. The aim of our project is to provide solution which can be used in different spheres of health care and which will be available through PDA (Personal Digital Assistant), web or desktop clients. Practically developing system works with an ECG sensor connected to mobile equipment, such as PDA/Embedded, based on Microsoft Windows Mobile operating system. The whole system is based on the architecture of .NET Compact Framework, and SQL Server. The project was tested in real environment in cryogenic room (-136degC).

关键词： Personal digital assistants Patient monitoring Data visualization Medical services Hospitals Biomedical monitoring computerized monitoring computer science control systems Electrocardiography

来源：评论

学校读者我要写书评

暂无评论

Vision-based nighttime vehicle detection and range estimation for driver assistance

Vision-based nighttime vehicle detection and range estimatio...

引用

IEEE International Conference on Systems, Man and Cybernetics

作者： Yen-Lin Chen Chuan-Tsai Lin Chung-Jui Fan Chih-Ming Hsieh Bing-Fei Wu Department of Computer Science and Information Engineering Asia University Taichung Taiwan Department of Electrical and Control Engineering National Chiao Tung University Hsinchu Taiwan

This paper presents a real-time vision system for assisting driver during nighttime driving. The proposed system provides the following features: 1) effectively detection and tracking of oncoming and preceding vehicles based on image segmentation and pattern analysis techniques. 2) Robust and adaptive vehicle detection under various illuminated conditions at nighttime urban environments benefited by a novel automatic object segmentation scheme. 3) Providing beneficial information for assisting the driver to perceive surrounding traffic conditions outside the car during nighttime driving. 4) Providing a versatile control strategy for in-vehicle facilities of the autonomous vehicles. 5) Offering real-time traffic event-driven video surveillance machinery for recording evidences of possible traffic accidents. Experimental results demonstrate the feasibility and effectiveness of the proposed system on nighttime driver assistance issues.

关键词： Vehicle detection Real time systems Vehicle driving Mobile robots Machine vision computer vision Object detection Image segmentation Pattern analysis Robust control

来源：评论

学校读者我要写书评

暂无评论

Annual business and news:: Beginning the 31st year of the Journal of Guidance, control, and Dynamics

引用

JOURNAL OF GUIDANCE control AND DYNAMICS 2008年第1期31卷 1-1页

作者： Schmidt, George T. Aeronautics and Astronautics Massachusetts Institute of Technology (MIT) AIAA Institute of Electrical and Electronics Engineers Russian Federation Academy of Navigation and Motion Control Department of Mechanical and Aerospace Engineering and Engineering Mechanics University of Missouri-Rolla(UMR) Lockheed Electronics Company Center for Space Research University of Texas Austin United States Wright Laboratory Eglin Air Force Base UMR AIAA Guidance Navigation and Control Technical Committee American Automatic Control Council Lockheed Martin Aeronautics Company Palmdale CA United States C4ISR and Unmanned Air Vehicle (UAV) Programs for Air Vehicle Sciences and Systems Accreditation Board Engineering and Technology Inc./Aeronautical National Technical Committee on Guidance Navigation and Control Department of Mechanical and Aerospace Engineering University at Buffalo State University of New York (SUNY) AIAA Technical Committee on GN and C Air Vehicles Directorate Air Force Research Laboratory (AFRL) Wright-Patterson Air Force Base Space Access and Hypersonic Vehicle Guidance and Control Group Control Science Center of Excellence AFRL AIAA Technical Committee on Guidance Navigation and Control Department of Mechanical and Aeronautical Engineering University of California (UC) Davis United States Boeing Company Modernized Flight Control System for the Apache Longbow AIAA Institute of Electrical and Electronics Engineers AHS Jet Propulsion Laboratory California Institute of Technology Boeing Company Flight Sciences and Advanced Design Group Guidance Navigation and Control (GN and C) Systems Engineer Distributed Space Systems NASA Goddard Space Flight Center (GSFC) AIAA GN and C Technical Committee Department of Aerospace Engineering and Engineering Mechanics University of Texas Austin United States Institute of Navigation American Astronautical Society AIAA Guidance Navigation (GN and C) and Control Technical Committee Department of Aerospace Engineering Iowa State University Iowa

来源：评论

学校读者我要写书评

暂无评论

Multimedia Support of Education Biomedical engineering

Multimedia Support of Education Biomedical Engineering

引用

computer Information Systems and Industrial Management Applications (CISIM)

作者： Radovan Hajovsky Faculty of Electrical Engineering and Computer Science Department of Measurement and Control VSB-Technical University of Ostrava Ostrava Poruba Czech Republic

This paper describes experience with creation and using multimedia for education support of Biomedical engineering. In this paper the methodology of creation multimedia education materials from begining to final distribution is described. Also created multimedia titules and education programs made in cooperation with University Hospital Ostrava and other specialized workplaces are presented.

关键词： Biomedical engineering Educational programs Graphics Biomedical imaging HTML computer science education Biological materials Biomedical materials Employment control engineering education

来源：评论

学校读者我要写书评

暂无评论

Design of the adaptive Smith Predictor for the time-varying network control system

Design of the adaptive Smith Predictor for the time-varying ...

引用

SICE Annual Conference

作者： Chien-Liang Lai Pau-Lo Hsu Bor-Chyun Wang Department of Electrical and Control Engineering National Chiao Tung University Hsinchu Taiwan Department of Computer Science and Information Engineering China University of Technology Hukou Taiwan

ISBN: (纸本)9784907764302

This paper integrates Ethernet and control area network (CAN) with the TCP/IP communication gateway. The developed system has been applied to a remote control system for an AC 400 W servo motor to verify the proposed adaptive Smith Predictor control method with the time-delay estimation algorithm. The time delay effect, defined as the round-trip time (RTT), between the application layer of the server and the application layer of the client, has been measured and analyzed. Moreover, results indicate that NCS performance is degraded, and may even become unstable mainly due to the serious network time delay in a stochastic nature mainly occurred in the Ethernet. The Smith predictor is adopted to eliminate the constant time delay. However, the delay in a commercial network is time varying and it depends on the number of end users. An adaptive Smith predictor control scheme is developed in this paper by applying the on-line estimation to further improve control performance of the proposed NCS with the integrated Ethernet and CAN buses. Experimental results indicate that the time delay is drifting in both bounded and random natures for the integrated Ethernet+CAN network and the proposed control approach significantly improves motion accuracy as in the NCS for an AC motor-based motion system.

关键词： NCS Time delay Adaptive Smith predictor Integration Ethernet CAN Ethernet networks Smith predictors application layer time delay NUCLEOPORIN, 214-KD calcium ammonium nitrate End users DNA Integration integration Networked control systems control area network Remote control systems kinematic accuracy Time varying networks

来源：评论

学校读者我要写书评

暂无评论

Towards a generic control system for actuated car doors with arbitrary degrees of freedom

Towards a generic control system for actuated car doors with...

引用

IEEE Symposium on Intelligent Vehicle

作者： Michael Strolz Quirin Muhlbauer Christian Scharfenberger Georg Farber Martin Buss Department of Electrical Engineering and Information Technology Institute of Automatic Control Engineering Technische Universität München Munich Germany Institute of Real-Time Computer Systems Department of Electrical Engineering and Information Technology Technische Universität München Munich Germany

Actuated car doors with more than one degree of freedom are a desirable means to boost the convenience of the access to cars. This paper outlines the problems connected with providing an intuitive, comfortable and safe operation of such doors. An advanced control system is proposed that overcomes these problems. First, a vision system for the monitoring of the workspace of the door is described. The data gathered is utilized by a collision avoidance method, which enables a safe operation of the car door. Second, a method for the support of the manual handling of the door is provided, which is based on predefined convenient paths for the specific kinematics of the door. Finally, the proposed control system is applied to a virtual car door, with successful results.

关键词： Vehicles

来源：评论

学校读者我要写书评

暂无评论

Intelligent control of high-speed sensorless brushless DC motor for intelligent automobiles

Intelligent control of high-speed sensorless brushless DC mo...

引用

IEEE International Conference on Systems, Man and Cybernetics

作者： Jung-Sheng Wen Chi-Hsu Wang Ying-De Chang Ching-Cheng Teng Department of Computer and Communication Engineering Technology and Science Institute of Northern Taiwan Taipei Taiwan Department of Electrical and Control Engineering National Chiao Tung University Hsinchu Taiwan

For the last decade, the need for electric driven vehicle has risen rapidly due to the global warming problem. A high efficient motor need to be developed to replace traditional engine. In this paper, the authors present a fuzzy logic controller (FLC) for sensorless brushless dc (BLDC) motor. The proposed FLC is based on the terminal voltage measurement as the sensorless method for BLDC motor control. There are two modules designed in the speed control of BLDC motor, i.e. command and regulating modules. Command module is to find and issue commutation period and PWM duty cycle to the BLDC motor for desired speed. The regulating module is designed by applying a FLC with sensorless technology and is used to regulate the speed of BLDC motor under various disturbances, such as loading effect. Two resistances are adopted to detect the zero-crossing point (ZCP) of back-EMF signal on the unexcited phase instead of using the expensive Hall sensors. The regulating module can regulate accurately and quickly the PWM duty cycle by fuzzy reasoning which makes the BLDC motor rotate smoothly at desired rotation speed even there exists an external disturbance. In order to reduce the computational load of real-time FLC for the microcontroller C8051F330, we can perform the FLC computation off-line to cover nearly all cases. These data will be recorded and organized as a Look-Up Table (LUT). This paper shows that a regulating module designed by FLC is better than a none regulation module or a regulating module with a P controller.

关键词： Intelligent control Brushless DC motors Intelligent sensors Intelligent vehicles Automobiles Pulse width modulation DC motors Sensorless control Table lookup Electric vehicles

来源：评论

学校读者我要写书评

暂无评论

A new artificial intelligence approach for 2D path planning for underwater vehicles avoiding static and energized obstacles

A new artificial intelligence approach for 2D path planning ...

引用

Congress on Evolutionary Computation

作者： S. Khanmohammadi G. Alizadeh J. Jassbi M. Pourmahmood Control Engineering Department Faculty of Electrical and Computer Engineering University of Tabriz Tabriz Iran Industrial Management Department Azad University Science and Research Branch Tehran Iran

Optimal trajectories in energetic environment for underwater vehicles can be computed using a numerical solution of the optimal control problem (OCP). An underwater vehicle is modeled with the six dimensional nonlinear and coupled equations of motion, controlled by DC motors in all degrees of freedom. An energy performance index that should be minimized may be considered. This leads to a two point boundary value problem (TPBVP). The resulting TPBVP is generally solved using iterative methods. In this paper, the applications of two different intelligent algorithms are briefly studied and compared versus the generally acceptable conjugate gradient penalty (CGP) method for the OCP. Genetic algorithm (GA) and particle swarm optimization (PSO) methods are applied to solve OCP. Two approaches for performance index minimization, using GA and PSO, are proposed. CGP method is used to solve the TPBVP, by applying Euler-Lagrange equation. The simulation results show that the trajectories obtained by the intelligent methods were better than that of conjugate gradient penalty. After analyzing the simple path planning problem, the problem energetic environments consisting some energy sources is propounded. The optimal paths are found using GA and PSO algorithms. The problem of collision avoidance in an energetic environment is solved and energy avoidance paths are computed.

关键词： Underwater vehicles Trajectory Optimal control Mathematical model Propellers Damping Gallium

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：