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Electrical and Computer Engineering, 2001. Canadian Conference on

Date 13-16 May 2001

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  • Canadian Conference on Electrical and Computer Engineering 2001 [front matter]

    Publication Year: 2001, Page(s):i - xxxiii
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  • Author's Name

    Publication Year: 2001, Page(s):1 - 13
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  • Design of high-speed and flexible controllers in programmable logic devices

    Publication Year: 2001, Page(s):1265 - 1271 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (628 KB) | HTML iconHTML

    Programmable logic devices, PLDs, continue to increase in terms of logic capacity and speed. Although logic capacity is less of an issue given the large devices on the market today, designers are still challenged with meeting timing and flexibility requirements for demanding applications. We demonstrate with an example, cache coherence controllers in the NUMAchine multiprocessor, an approach that ... View full abstract»

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  • Handling complex VHDL semantics with an OO intermediate format

    Publication Year: 2001, Page(s):1273 - 1278 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (372 KB) | HTML iconHTML

    One of the most important problems for integrating CAD tools is the sharing of the design information between various tools and environments. Using a standard intermediate format makes the interfacing and processing very easy so that all the applications may start their own processing from intermediate formats. We have used the CHIRE (Compiled HDL Intermediate Representation with Extensibility) in... View full abstract»

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  • FPGA implementation of PWM pattern generators

    Publication Year: 2001, Page(s):1279 - 1284 vol.2
    Cited by:  Papers (4)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1312 KB) | HTML iconHTML

    Pulse width modulation is used in power converters to modulate a reference signal into gating pulses for IGBT switches. This conversion can be carried out using analog circuits or digital circuits, such as DSPs and microcontrollers. A more efficient and faster solution is the use of field programmable gate arrays (FPGA). This paper demonstrates how to build a variable pulse-width modulation (PWM) ... View full abstract»

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  • Encoding of color still pictures by wavelet transform and vector quantization

    Publication Year: 2001, Page(s):931 - 936 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (756 KB) | HTML iconHTML

    This paper presents research results on color-image compression by the wavelet transform and 3-level quad-tree coding. First a still picture based on an RGB color model is converted to YIQ and YUV color components. At the encoding process each color component is encoded individually. A color component is decomposed to (3×3+1) subband images using the 2-D discrete wavelet transform three time... View full abstract»

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  • A new simple ∞OH neuron model as a principal component analyzer

    Publication Year: 2001, Page(s):981 - 986 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (408 KB) | HTML iconHTML

    A new approach to unsupervised learning in a single-layer neural network is discussed. An algorithm for unsupervised learning based on the Hebbian learning rule is presented. A simple “almost linear” neuron model is analyzed. The adopted neuron model does not perform just simple summation of the weighted inputs but also performs integration. In addition, the adopted structure represent... View full abstract»

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  • Low power multiport memories exploration and design

    Publication Year: 2001, Page(s):1285 - 1290 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (532 KB) | HTML iconHTML

    We describe a multiport memories exploration and design procedure that satisfies area and/or energy constraints. Our procedure consists of use of integer linear program (ILP) models and heuristic-based algorithms to determine (i) the memory configuration with minimum area, given the energy bound, and (ii) the memory configuration with minimum energy, given the area bound. The results obtained by t... View full abstract»

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  • An accurate linear approximation method utilizing a bipartite reciprocal table for a floating point divider

    Publication Year: 2001, Page(s):1199 - 1204 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB) | HTML iconHTML

    With the advent of fast multipliers, the latency of a floating point division is greatly reduced using a multiplicative method rather than a subtractive one. For most multiplicative division algorithms, an initial reciprocal approximation of the divisor is largely obtained by a look-up table method. Once the initial approximation is made, it is refined by the use of a functional iteration method u... View full abstract»

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  • Morphological skeleton algorithm for PDP production line inspection

    Publication Year: 2001, Page(s):1117 - 1122 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (504 KB) | HTML iconHTML

    Morphological skeletonization is an image processing technique that reduces complex, thick-lined images to a series of single pixel lines that accurately represent the original shapes. This procedure is especially useful to simplify automated applications requiring simple shape analysis and continuity checking by reducing the amount of redundant image data. In the semiconductor inspection field, s... View full abstract»

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  • Genetic algorithm for bending process in sheet metal industry

    Publication Year: 2001, Page(s):957 - 962 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (484 KB) | HTML iconHTML

    In sheet metal industries, the required shape has to be bent from the flat 2D sheets. In this bending process, the most complex process is due to the determination of the bend sequence and assigning proper tools for each bend. Finding the best bending sequence is itself a combination problem and this when coupled with tool selection results in a combination explosion, which clearly states that an ... View full abstract»

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  • Measuring the parameters of a cage-rotor reluctance synchronous motor

    Publication Year: 2001, Page(s):775 - 780 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB) | HTML iconHTML

    A three-phase two-pole line-start conventional rotor reluctance synchronous machine that comprises a cage was tested in the laboratory for the determination of its dynamic characteristics. The purpose is to obtain the machine equivalent circuit for synchronous and asynchronous operation modes. The vector diagram is the theoretical approach that is used in this work to get the synchronous performan... View full abstract»

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  • Characterization of a gate drive technique for snubberless operation of gate controlled devices

    Publication Year: 2001, Page(s):1085 - 1089 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (280 KB) | HTML iconHTML

    Several gate drive schemes have been suggested for snubberless operation of high current gate controlled devices. This paper characterizes one such technique which results in an acceptable compromise between switching speed, power dissipation and electromagnetic interferences (EMI). The paper begins with an analysis of the switching waveforms highlighting the device and circuit parameters which af... View full abstract»

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  • The benefits of implementing distribution automation and system monitoring in the open electricity market

    Publication Year: 2001, Page(s):825 - 830 vol.2
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (404 KB) | HTML iconHTML

    In the new business environment, rates for monopoly distribution services (wires), regulators are trying to create a balance between the dollars paid by the consumers and rate of return that the shareholders are allowed to earn. The regulator in Ontario has implemented “performance based regulation” (PBR) to regulate the “wires” part of the distribution system. In PBR, qual... View full abstract»

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  • New job selection and location policies for load distributing algorithms

    Publication Year: 2001, Page(s):1139 - 1144 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (480 KB) | HTML iconHTML

    Load distributing algorithms in distributed systems are used to share the resources by distributing the workload. These algorithms have four components: a transfer policy that determines whether a node is in a suitable state to participate in a task transfer; a selection policy that determines which task should be transferred; a location policy that determines to which node a task selected for tra... View full abstract»

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  • Performance prediction on graphics hardware using software simulation

    Publication Year: 2001, Page(s):1235 - 1240 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (484 KB) | HTML iconHTML

    We describe our work in using software simulation to provide useful chip level performance metrics for our future graphics chips. Because of the deep pipeline and the deep FIFOs, most of the blocks in the graphics chip are expected to be busy most of the time. For this reason, we dropped event-driven simulation and chose a cycle-based approach. We designed an efficient scheduler along with other c... View full abstract»

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  • A method of acquiring and refining a signal depicted on an image

    Publication Year: 2001, Page(s):1291 - 1295 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (520 KB) | HTML iconHTML

    A tool is developed in order to acquire the analytical mathematical form of a signal depicted on an image. The resulting mathematical form can be used for simulation and survey purposes concerning the signal's originating system. The mathematical method, on which the tool is based, is presented in two sections. In the first section the signal's data set extraction algorithm is presented, while in ... View full abstract»

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  • Establishment of an algorithm for detecting the multi-scale contours in the forms of FPGA circuits

    Publication Year: 2001, Page(s):1205 - 1210 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (540 KB) | HTML iconHTML

    The extraction of the contours of a numerical image plays a very important role in image processing. A method of contours extraction utilising a rapid wavelet transforms algorithm is described. This method allows the detection of multi-scale contours and in an optimum way all the details of the contours presented in an image by changing the scales. For real time applications dedicated to the detec... View full abstract»

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  • Radiometric equalization of remote sensing data by utilization of laser scan data

    Publication Year: 2001, Page(s):1111 - 1116 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1032 KB) | HTML iconHTML

    This contribution describes a new approach for detection of shadow areas appearing in remote sensing image data. Identification of objects like streets or vehicles is frequently disturbed by illumination effects like hard shadows or inhomogeneous darkening due to varying tilt angles of the processed terrain. To increase the reliability of the recognition process, we apply a sensor fusion of elevat... View full abstract»

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  • Modeling the correlation structure of images in the wavelet domain

    Publication Year: 2001, Page(s):1123 - 1127 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB) | HTML iconHTML

    In this paper we investigate the correlation structure of the wavelet coefficients corresponding to random fields. The context of this work is the study of Bayesian approaches to wavelet shrinkage for the purposes of image denoising. This paper concentrates on both within-scale and across-scale statistical dependencies for a variety of wavelets and random fields, with examples provided for both 1-... View full abstract»

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  • Study of degradation regimes in the power electronic systems installed in electric vehicles

    Publication Year: 2001, Page(s):759 - 763 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (308 KB) | HTML iconHTML

    This paper shows the interest in the numerical simulation method in the study of degradation regimes in power electronic systems. This method permits the prediction of limiting failures of systems installed in an electric vehicle. A case study is presented, it treats the accidental failures occurring in an inverter supply of an induction machine. The evolution of different sizes of system and comm... View full abstract»

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  • Transient analysis of a wind-driven induction generator

    Publication Year: 2001, Page(s):805 - 809 vol.2
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (200 KB) | HTML iconHTML

    The transient behavior of wind-driven induction generator is analyzed. The generator is assumed to be running at steady-state with a certain real and reactive power flow conditions when a sudden disturbance occurs. An example of the disturbance may be a sudden disconnection from the utility grid. The generator is modeled using the universal machine model and the grid is represented by a constant v... View full abstract»

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  • The sort of fault diagnosis in large synchronous generators by analytic hierarchy process (AHP) method

    Publication Year: 2001, Page(s):715 - 718 vol.2
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (212 KB) | HTML iconHTML

    Generators are the most important and valuable equipment in power systems. Internal faults not only damage the generator but also interrupt electricity generation and cause load rejection. If they are not detected immediately they spread, then repair becomes very long and tedious and the availability of the generator is lost. Unplanned repair costs of different parts of a generator and pertinent c... View full abstract»

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  • Circuit synthesis evolution using a hardware-based genetic algorithm

    Publication Year: 2001, Page(s):963 - 968 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (460 KB) | HTML iconHTML

    We propose a scheme based on a hardware implementation of a genetic algorithm, to evolve the minimized logic solution of a defined input function. The minimization will be one of resource usage, more precisely of look-up tables (LUTs). The design aids in the difficult issue of technology mapping, as well as multi-level logic synthesis. The approach undertaken in this research involves intrinsic ha... View full abstract»

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  • Counter-flow in a deregulated power system network and its effect on transmission loss allocation

    Publication Year: 2001, Page(s):1047 - 1051 vol.2
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB) | HTML iconHTML

    In a deregulated electrical power system network, every transaction of electricity between a generator and a customer involves some loss. In some cases, a generator while supplying its load however, may, actually decrease the transmission loss by opposing an initial flow. This flow is commonly termed as counter-flow. An algorithm has been developed to trace counter-flow in a deregulated power syst... View full abstract»

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