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Proceedings of 1996 Canadian Conference on Electrical and Computer Engineering

26-29 May 1996

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  • 1996 Canadian Conference on Electrical and Computer Engineering

    Publication Year: 1996
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    Freely Available from IEEE
  • Robotics and control R&D in the Canadian Space Station program

    Publication Year: 1996, Page(s):482 - 485 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (387 KB)

    The Canadian Space Agency has chosen space robotics as one of its key niche areas, and currently more than 75% of the space robotic program resources is for the International Space Station. As a result of this the Canadian Space Station Program has invested considerable research and development effort in the field of robotics and control. This R&D effort is occurring both in the main mobile servic... View full abstract»

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  • Dynamic analysis of a high performance permanent magnet synchronous motor drive

    Publication Year: 1996, Page(s):611 - 614 vol.2
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (376 KB)

    In this paper, a complete model is developed to examine the dynamic behaviors of a high-performance vector controlled permanent magnet synchronous motor (PMSM) drive. The d,q axis model of the PMSM is used to simulate and analyze the complete drive system. Based on the vector control principle and current feedback control, the nonlinear dynamic model of the PMSM drive can be simplified and lineari... View full abstract»

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  • Harmonic reduction in three phase unbalanced systems

    Publication Year: 1996, Page(s):663 - 666 vol.2
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (346 KB)

    Active power filters are becoming more and more economically viable as a solution to reduce harmonics generated by nonlinear loads. In the shunt connected conventional three-phase topology, interactions between phases are experienced. This problem points to the necessity of having per phase based current controllers and power converters. The three half-bridge topology presented in this paper is a ... View full abstract»

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  • Author index

    Publication Year: 1996
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    Freely Available from IEEE
  • Non destructive monitoring of the curing process of epoxy in situ by way of a fiber acoustic sensor

    Publication Year: 1996, Page(s):880 - 883 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB)

    In this paper the experimental model of the nondestructive monitoring of the curing process of epoxy in situ by way of an embedded fiber optic acoustic sensor is given and the sensing principles of this intensity modulation fiber acoustic sensor are theoretically analyzed. The highlight is focused on the study of how the amplitude of the nonideal guided mode L01 in the acoustic fiber ch... View full abstract»

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  • Robust performance analysis of a controlled synchronous machine

    Publication Year: 1996, Page(s):591 - 594 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (280 KB)

    In this work we investigate the robust performance of a controller which was originally proposed by M. Araki et al. (see Eighth IFAC World Congress, Kyoto, Japan, p.3123-35, 1981) to control a synchronous machine connected to an infinite bus through a transmission line. The objectives of the design by Araki et. al. were to ensure (1) satisfactory voltage regulation in the pre-fault state and (2) s... View full abstract»

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  • Mechanical vibration analysis using an optical sensor

    Publication Year: 1996, Page(s):876 - 879 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB)

    A laser-based contactless displacement measurement system developed at the National Optics Institute is used for data acquisition to analyze the mechanical vibrations exhibited by vibrating structures and machines. The analysis of these vibrations requires a number of signal processing operations which include the determination of the system conditions through a classification of various observed ... View full abstract»

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  • The converging flows protocol: design and analysis using SDL

    Publication Year: 1996, Page(s):972 - 975 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB)

    This paper demonstrates the use of Specification and Description Language (SDL) to design the converging flows protocol (CFP). The converging flows problem arises when several sources transmit simultaneously to a destination and the sum of all the flows is greater than the processing rate of the destination. The CFP is designed to throttle the sources to ensure that buffers at a destination do not... View full abstract»

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  • Representation and automatic organization of picture knowledge bases

    Publication Year: 1996, Page(s):700 - 703 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB)

    Methods are described for using human perceptions of pictures to represent the semantic content of these pictures in frame knowledge bases. A pictorial knowledge base management system is presented that uses a conceptual clustering algorithm for organizing a frame knowledge base into groups of semantically similar pictures. The conceptual clustering algorithm is based on the theory of gestalt. App... View full abstract»

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  • Developing a logic for effective engineering management of energy issues

    Publication Year: 1996, Page(s):907 - 910 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (420 KB)

    This paper presents a heuristic model which can assist electric utility managers in identifying, classifying, and responding to stakeholder concerns. After presenting the model and its origins, the paper demonstrates its use in detailing the concerns facing a regional electric utility and discusses the potential usefulness of this logic in guiding managerial decision-making View full abstract»

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  • Frequency dependent network equivalent algorithm for AC power systems

    Publication Year: 1996, Page(s):639 - 642 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB)

    In electromagnetic transients studies, only a small part of an AC power system can be modeled in detail. The remaining parts of the system should be reduced to equivalent networks. Different methods have been developed to generate frequency dependent network equivalent (FDNE) models. These FDNE models consist of simple R,L and C branches that reproduce the impedance frequency characteristic of the... View full abstract»

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  • A 3-D animated simulator for robot manipulators

    Publication Year: 1996, Page(s):574 - 577 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (548 KB)

    The 3-D animated simulator emulates an actual robot manipulator in a simulation space. The simulator is intended for use in teleoperation, where the graphical image represents the actual remote manipulator. The robot is viewed from a “camera position”. The motion of the tip of the manipulator can be traced out in the simulation space as a continuous 3-D line. The interface has the capa... View full abstract»

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  • Comparative simulation study of two three-phase active single-switch topologies for power factor correction

    Publication Year: 1996, Page(s):984 - 987 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB)

    This work compares two economical three-phase power factor correction topologies. It is original in showing the isolated contribution of each part (active switch, input filter and output filter) of the circuits studied to their overall performance. Attention is also drawn to the influence of the output filter on the harmonics of the line current, often overlooked in the literature. A reduction of ... View full abstract»

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  • SPICE3 simulation techniques in power electronics

    Publication Year: 1996, Page(s):651 - 654 vol.2
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (296 KB)

    This paper describes numerous SPICE3 techniques appropriate for power electronics. The recent updates made to SPICE at the University of Berkeley has made obsolete various SPICE simulation techniques often used in power electronics systems. Many new features have also been added to SPICE3 that allow many new circuit design oriented tasks to be performed. The introduction of the “B-statement&... View full abstract»

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  • Multi-input multi-output feedback linearization of a synchronous generator

    Publication Year: 1996, Page(s):586 - 590 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (364 KB)

    This paper investigates the application of a MIMO nonlinear controller to a system comprising a hydraulic turbine and a synchronous generator connected to an infinite bus. The controller proposed is based on a feedback linearization scheme. Its main goal is to control the rotor angle as well as the terminal voltage, to improve the stability properties and to obtain good dynamic performance. The re... View full abstract»

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  • Performance evaluation of hierarchical routing in ATM networks

    Publication Year: 1996, Page(s):818 - 821 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (204 KB)

    The hierarchical routing model was proposed for ATM networks to reduce the amount of storage as well as communication overheads that would result if flat routing is used. This is achieved by having each node store and transmit only a partial set of information about the network status instead of a complete one. However this may result in a degradation of the performance of these networks due to th... View full abstract»

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  • Faraday effect optical current sensor

    Publication Year: 1996, Page(s):871 - 875 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (348 KB)

    Based on the classical electromagnetic theories, the Faraday magnetooptic effect in a diamagnetic medium is independent of temperature. In this study the geometric compensation methods is adopted and closed loop current sensor with frame structure is designed and fabricated based on the Faraday effect in diamagnetic media using SF6 glass. With the closed loop optical current sensor the experimenta... View full abstract»

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  • Blocking analysis and optimized design of a class of circuit-switched multicast networks

    Publication Year: 1996, Page(s):966 - 971 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (428 KB)

    We present a blocking analysis and optimized design method for a wide-area multicast videoconferencing service which interconnects subscriber locations via circuit-switched DS-1 multicast control units (MCUs). Optimization leads to a configuration of MCUs in which the end-to-end blocking of random multicast traffic meets a target specification with a minimum total number of MCUs. The analytical mo... View full abstract»

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  • Improving the classification accuracy of automatic text processing systems using context vectors and back-propagation algorithms

    Publication Year: 1996, Page(s):696 - 699 vol.2
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (380 KB)

    We analyze some of the benefits of combining the context-vector representation of documents with the back-propagation paradigm for document classification. We discuss an implementation of this architecture, called NeuroFile, which combines automatic document classification with similarity-based, as well as Boolean retrieval facilities in a single electronic filing system. The quality of performanc... View full abstract»

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  • Five and seven phase current convertors: a feasibility study

    Publication Year: 1996, Page(s):1000 - 1003 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (348 KB)

    This study covers a new generation of polyphase power convertors in which the semiconductors are rearranged into a double parallel assembly of five (or seven) branches, and the conversion transformers are three/five or three/seven-phase connections derived from Leblanc and Scott assemblies or from a series rearrangement of single-phase transformers. The number of secondary electrical phases being ... View full abstract»

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  • Image/video indexing in the compressed domain

    Publication Year: 1996, Page(s):903 - 906 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (380 KB)

    Visual database systems require efficient indexing to enable fast access to the images and video sequences in the database. Since image and video data are voluminous, compression is essential for storage and transmission. The International Standards Organization has proposed the JPEG and MPEG standards for image and video compression, respectively. In order to avoid the unnecessary decompression a... View full abstract»

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  • Power system measurements based on fuzzy linear regression algorithm for power system protection

    Publication Year: 1996, Page(s):1020 - 1026 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB)

    This paper presents a new technique for power system voltage measurements based on fuzzy linear regression. The voltage signal is assumed to have a linear relation with the voltage magnitude and the phase angle. The coefficients of this linear relation are considered as fuzzy numbers with given middle and spread values. The spread defines the fuzziness of the function. The proposed technique uses ... View full abstract»

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  • Iterative least squares design of perfect reconstruction QMF banks

    Publication Year: 1996, Page(s):762 - 765 vol.2
    Cited by:  Papers (7)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    A simple and efficient algorithm to design M-band perfect reconstruction (PR) quadrature mirror filter (QMF) banks is presented. The originality of our approach is that the design does not rely on a computationally intensive, nonlinear optimization method but rather on an iterative least squares method. The algorithm is simple to implement and rapidly converging. Design examples and a MATLAB progr... View full abstract»

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  • Modeling of medium voltage smart motor controllers (MV SMC) in PSPICE

    Publication Year: 1996, Page(s):635 - 638 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (208 KB)

    Computer-aided analysis and synthesis of power electronics circuits provides a powerful and economic insight into MV smart motor controllers. Although the PSPICE software contains a library of specific semiconductor devices including SCRs, the programmability of a thyristor model is required. A thyristor model featuring programmable on-resistance and reverse recovery time was proposed by Losic (19... View full abstract»

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