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International Conference on Future computer and Communication, ICFCC

作者： Boonchuan Ng Mohammad Syuhaimi Ab-Rahman Rosmawati Ismail Abang Anuar Ehsan Sahbudin Shaari Computer & Network Security Research Group Department of Electrical Electronics & Systems Engineering Faculty of Engineering & Built Environment Universiti Kebangsaan Malaysia Bangi Selangor Darul Ehsan Malaysia Photonic Technology Laboratory Institute of Micro Engineering & Nanoelectronics Universiti Kebangsaan Malaysia Bangi Selangor Darul Ehsan Malaysia

This paper focused on developing a fully passive device prototype named passive in-line monitoring (PIM) device, which used to tap out a small ratio of triple-play signals for monitoring purpose without affecting the transmission in fiber-to-the-home (FTTH) access network. This device will be installed with the main lines in FTTH permanently to allow the field engineers or technicians to simply connect it to a portable tester unit for transmission surveillance and failure detection. The PIM device is used to sharply determine the location of break point before repairing. A passive tapper circuit is required to obtain the optical signals to provide a visual way of monitoring the receiving signal performance. The entire optical components that had been used in the circuit design including connectors, splices, optical isolators, and optical couplers. This device is potentially to improve the service reliability and reduce the repairing cost and time.

关键词： Prototypes Optical fiber subscriber loops Optical network units Optical devices Condition monitoring Optical fiber devices Optical fiber testing Design engineering Circuit testing Surveillance

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In-Service Monitoring and Failure Identifying against Fiber Fault in FTTH with Passive In-Line Monitoring (PIM) Device

In-Service Monitoring and Failure Identifying against Fiber ...

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International Conference on Future Networks, ICFN

作者： Mohammad Syuhaimi Ab-Rahman Boonchuan Ng Rosmawati Ismail Abang Anuar Ehsan Sahbudin Shaari Computer & Network Security Research Group Department of Electrical Electronics & Systems Engineering Faculty of Engineering & Built Environment Universiti Kebangsaan Malaysia Bangi Selangor Darul Ehsan Malaysia Photonic Technology Laboratory Institute of Micro Engineering & Nanoelectronics Universiti Kebangsaan Malaysia Bangi Selangor Darul Ehsan Malaysia

This paper focuses on developing a passive in-line monitoring (PIM) device prototype, which used to tap out a small ratio of triple-play signals for in-service monitoring and failure identifying against fiber fault in fiber-to-the-home (FTTH) access network. This device will be installed with the main lines in FTTH permanently to allow the technicians to simply connect it to a portable tester unit for transmission surveillance and failure detection. The PIM device is used to sharply determine the location of break point before repairing. A passive taper circuit is required to obtain the optical signals to provide a visual way of monitoring the receiving signal performance. This device is potentially to improve the service reliability and reduce the repairing cost and time.

关键词： Condition monitoring Fault diagnosis Optical fiber devices Optical fiber subscriber loops Circuit faults Optical fiber testing Prototypes Signal processing Circuit testing Surveillance

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Intelligent End-To-End Resource Virtualization Using Service Oriented Architecture

Intelligent End-To-End Resource Virtualization Using Service...

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IEEE Globecom Workshops

作者： E. Onur E. Sfakianakis C. Papagianni G. Karagiannis T. Kontos I. Niemegeers I. P. Chochliouros S. Heemstra de Groot P. Sjodin M. Hidell T. Cinkler M. Maliosz D. I. Kaklamani J. Carapinha M. Belesioti E. Fytros Faculty of Electrical Engineering Mathematics and Computer Science Delft University of Technnology Netherlands Laboratories & New Technologies Division Research Programs Section Hellenic Telecommunications Organization S. A. Athens Greece School of Electrical and Computer Engineering National and Technical University of Athens Greece Department of Electrical Engineering Mathematics and Computer Science and CTIT University of Twente Enschede Netherlands Siemens IT Solutions and Services Athens Greece Twente Institute for Wireless and Mobile Communications Enschede Netherlands School of Information and Communication Technology Royal Institute of Technology Stockholm Sweden Department of Telecommunications and Media Informatics Budapest University슠of슠Technology슠and슠Economics Hungary Portugal Telecom Group PT Inovação S A Portugal

Service-oriented architecture can be considered as a philosophy or paradigm in organizing and utilizing services and capabilities that may be under the control of different ownership domains. Virtualization provides abstraction and isolation of lower level functionalities, enabling portability of higher level functions and sharing of physical resources. However, dynamics, environmental conditions and increasing complexity / heterogeneity of underlying resources call for adaptive resource handling. In this view an intelligent distributed architecture that enables dynamic user management and control on network-wide resource sharing by using the service oriented architecture concept is presented. Additionally, the proposed architecture supports trading of resources that will enable the transformation of traditional business models.

关键词： Resource virtualization Service oriented architecture Resource management computer networks Grid computing Cloud computing Mathematics computer science Organizing Hardware

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Droop based control of parallel-connected single-phase inverters in D-Q rotating frame

Droop based control of parallel-connected single-phase inver...

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IEEE International Conference on Industrial technology (ICIT)

作者： Saeed Golestan Mahmood Joorabian Hasan Rastegar Arman Roshan Josep M. Guerrero Faculty of Electrical Engineering Amirkabir University of Technology슠 Tehran Iran Shahid Chamran University Ahvaz Iran Center of Power Electronics Systems Virginia Polytechnic Institute and State University Blacksburg VA USA Department of Automatic Control Systems Computer Engineering Universitat Poliltècnica de Catalunya Barcelona Spain

ISBN: (纸本)9781424435067

In this paper, control of parallel single-phase inverters in direct-quadrature(DQ) rotating frame based on droop method is proposed. For each inverter, a secondary orthogonal imaginary circuit is created to provide the second phase required for the transformation; thus a DQ model of the inverter is obtained. The DQ transformation provides a time-invariant model of the inverter which makes the control design similar to that of dc-dc converters. The recognition of this analogy is important in that all of advanced dc-dc converters control techniques that have been previously developed can be applied to the control parallel inverters. The controller then is designed in DQ frame. Theoretically, infinite loop gain can be achieved in DQ rotating frame resulting in the elimination of the steady state error at the fundamental frequency of the inverter. The output impedance of the inverters is also considered, to ensure the decoupling between active and reactive power control using droop method. Simulation results are provided to prove the concept.

关键词： Inverters Communication system control Circuits DC-DC power converters Uninterruptible power systems Power system reliability Control systems Control design Frequency Reactive power control

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A Fast MPC Algorithm Using Nonfeasible Active Set Methods

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JOURNAL OF OPTIMIZATION THEORY AND APPLICATIONS 2008年第3期139卷 591-616页

作者： Milman, R. Davison, E. J. Faculty of Engineering and Applied Science University of Ontario Institute of Technology Oshawa Canada Department of Electrical and Computer Engineering Faculty of Applied Science and Engineering University of Toronto Toronto Canada

Model predictive control (MPC) is an optimization-based control framework which is attractive to industry both because it can be practically implemented and it can deal with constraints directly. One of the main drawbacks of MPC is that large MPC horizon times can cause requirements of excessive computational time to solve the quadratic programming (QP) minimization which occurs in the calculation of the controller at each sampling interval. This motivates the study of finding faster ways for computing the QP problem associated with MPC. In this paper, a new nonfeasible active set method is proposed for solving the QP optimization problem that occurs in MPC. This method has the feature that it is typically an order of magnitude faster than traditional methods.

关键词： Model predictive control Quadratic programming Active set methods Nonfeasible methods

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Non-daily behavior detection monitoring system for elderly people based on bayesian network representation of omni-directional vision sensor

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IEEJ Transactions on Industry Applications 2008年第8期128卷 11+1052-1059页

作者： Seki, Hirokazu Tadakuma, Susumu Department of Electrical Electronics and Computer Engineering Faculty of Engineering Chiba Institute of Technology 2-17-1 Tsudanuma Narashino 275-0016 Japan

This paper describes an unusual behavior detection system based on an omni-directional vision sensor as one of the important elements in realizing "Sensing and Robotic Support Room" for elderly people. Such support rooms are expected to be further developed in the future with the high performance to automatically recognize elderly people's actions and behavior patterns and detect the unusual patterns using some sensors and to support their daily motions using some robotic manipulator control systems. The proposed monitoring system using an omni-directional vision sensor automatically learns the daily behavior patterns and detects the unusual behavior patterns and actions using Bayesian Network approach. The Bayesian Network is constructed using image feature values such as the area and center of gravity values extracted from the captured image sequence and the respective behavior patterns are represented as the conditional probabilities. Unusual behavior patterns can be automatically detected based on the low generation probability values. Some experiments based on the investigation of elderly people's typical daily behavior patterns show the effectiveness of the proposed system. © 2008 The institute of electrical Engineers of Japan.

关键词： Bayesian networks

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Maximization of system lifetime in body sensor networks

Maximization of system lifetime in body sensor networks

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5th International Conference on electrical and computer engineering, ICECE 2008

作者： Mondal, Md. Nazrul Islam Ahmed, Kazi Mohiuddin Department of Computer Science and Engineering Faculty of Electrical and Computer Engineering Rajshahi University of Engineering and Technology Bangladesh Department of Telecommunications School of Engineering and Technology Asian Institute of Technology Bangkok Thailand

ISBN: (纸本)9781424420155

In this paper, the target is to reduce the energy consumption in the body sensor network as well as maximize the system lifetime of sensor nodes when they will make communication among body sensors and personal communication unit. The best compression technique like LPC is selected for energy saving based on some calculations. Formulation of a linear programming problem where is to maximize the system lifetime which is equivalent to the time until the first node runs out of battery. Maximum system lifetimes are calculated by MATLAB optimization technique using and without using efficient compression algorithm like LPC in various environments. The results show that maximum system lifetimes calculated in different scenarios using efficient compression technique like LPC is better than without using compression technique. © 2008 IEEE.

关键词： Body sensor networks

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Characteristics comparison of motion controllers through experiments

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Journal of institute of Control, Robotics and Systems 2008年第11期14卷 1094-1102页

作者： Jung, Seung Hyun Wang, Jun Han, Chang Wook Park, Jung-Il Automation Technology Senior Researcher Korea Textile Machinery Research Institute Gyeongsan Korea Republic of School of Electronic Engineering University of Electronic Science and Technology of China China School of Electrical Engineering and Computer Science Yeungnam University Korea Republic of Faculty of the School of Electrical Engineering and Computer Science Yeungnam University Korea Republic of

Through the motion control experiment using Industrial Emulator(Model 220 by ECP), the performance comparison of three kinds of controllers such as PID, RIC and LQR was carried out. It was shown that RIC has the best performance in the presence of disturbances such as step one, sinusoidal one and Coulomb friction for the rigid body. LQR using feedback state variables has the best tracking performance for the flexible body. The performance of PID controller is low compared to other controllers, but the design process is simple. The most advanced controller is LQR. In order to attenuate disturbance, an additional state observer should be used to estimate it, making more complex control system. RIC lies between PID and LQR in view of complexity of design. Even though RIC is not complicated, it has good disturbance rejection ability and less tracking error. By considering these aspects, the RIC is suggested as high precision controller to be used in motion control system.

关键词： Disturbance rejection

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Efficient color feature extraction and matching for motion estimation and mapping

Efficient color feature extraction and matching for motion e...

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2008 IEEE/RSJ International Conference on Intelligent Robots and Systems, IROS

作者： Hwang, Hyoseok Kweon, In-So Robotics Program Korea Advanced Institute of Science and Technology Daejon Korea Republic of Faculty of Electrical Engineering and Computer Science Korea Advanced Institute of Science and Technology Daejon Korea Republic of

ISBN: (纸本)9781424420582

Feature extraction and matching is one of the most significant research areas in robot vision. In this paper, we present a new method for motion estimation and mapping using color feature extraction and matching. The proposed method reduces computational cost and has good performance. The experimental result shows that the proposed method not only runs faster but provides accurate result.

关键词： Motion estimation

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A program for distributed laboratories in the ECE CURRICULUM

A program for distributed laboratories in the ECE CURRICULUM

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2008 ASEE Annual Conference and Exposition

作者： Ferri, Bonnie Auerbach, Jill Jackson, Joel Michaels, Jennifer Williams, Douglas Georgia Tech. Graduate Affairs in ECE Georgia Tech. School of Electrical and Computer Engineering Georgia Institute of Technology Center for Signal and Image Processing School of ECE Georgia Tech. Georgia Institute of Technology Faculty of the School of Electrical and Computer Engineering Georgia Tech.

This paper describes a project that seeks to improve undergraduate learning by developing a cohesive program where experiments are introduced into a wide selection of ECE courses that currently do not have labs. Most of the experiments are low cost and portable, which facilitates a decentralized laboratory environment where students perform the experiments at their homes or in the classroom rather than in dedicated laboratories. We will assess our work through the involvement of twelve faculty members teaching ten courses, some of which are offered in distance learning settings. © American Society for engineering Education, 2008.

关键词： Laboratories

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