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IEEE WESCANEX 95. Communications, Power, and Computing. Conference Proceedings

15-16 May 1995

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  • IEEE WESCANEX 95. Communications, Power, and Computing. Conference Proceedings

    Publication Year: 1995
    Request permission for commercial reuse | PDF file iconPDF (758 KB)
    Freely Available from IEEE
  • List of keywords

    Publication Year: 1995
    Request permission for commercial reuse | PDF file iconPDF (222 KB)
    Freely Available from IEEE
  • List of authors

    Publication Year: 1995
    Request permission for commercial reuse | PDF file iconPDF (113 KB)
    Freely Available from IEEE
  • Synthesizing testability features into a design with the Synopsys Test Compiler

    Publication Year: 1995, Page(s):462 - 467 vol.2
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (420 KB)

    In this paper, we present a methodology for synthesizing testability features in a design described using Hardware Description Language (HDL) and the Synopsys Test Compiler tool. Because an HDL described design of an IC device can be automatically transformed into a gate-level implementation for a given technology with Synopsys Synthesis Tools, adding internal scan test circuitry or boundary scan ... View full abstract»

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  • A digital signal processor based atomic force microscope controller

    Publication Year: 1995, Page(s):456 - 461 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (472 KB)

    This article describes the hardware architecture and software algorithms of a digital AFM controller that is built upon a digital signal processor DSP56001 from Motorola. The hardware of the digital controller includes a DSP board, a host-PC and a custom design analog/digital interface circuit board. The system has 0.4 Å/bit resolution in the vertical direction and 130 nm to 7000 nm field of... View full abstract»

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  • Effect of DC capacitance of a STATCON on the dynamic performance at a weak HVDC terminal

    Publication Year: 1995, Page(s):289 - 293 vol.2
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (308 KB)

    This paper investigates the effect of the DC capacitance of an advanced static VAr compensator or STATCON on the dynamic performance at a high voltage direct current (HVDC) inverter terminal where the AC system has a very low short circuit ratio (SCR). The simulation results show that the STATCON behaves almost equally well under severe AC disturbance while the DC capacitance of the inverter is va... View full abstract»

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  • Ray-tracing studies in a perturbed atmosphere

    Publication Year: 1995, Page(s):386 - 391 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (512 KB)

    We report the development of a new ray-tracing simulation tool having the potential of the full characterization of a radio link through the accurate study of the propagation path of the signal from the transmitting to the receiving antennas across a perturbed atmosphere. The ray-tracing equations are solved, with controlled accuracy, in three dimensions (3D) and the propagation characteristics ar... View full abstract»

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  • A hybrid architecture for Hopfield neural networks and its GaAs implementation using CCDs as storage elements

    Publication Year: 1995, Page(s):445 - 450 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (444 KB)

    A hybrid architecture for Hopfield artificial neural networks and its GaAs implementation are described in this paper. This approach merges parallel summation and multiplication and serial neuron state updating. For a N×N network, only N multipliers and one neuron activation function are needed View full abstract»

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  • A new positive sequence directional element for numerical distance relays

    Publication Year: 1995, Page(s):334 - 339 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (500 KB)

    This paper describes a new positive sequence directional element for use in numerical distance relays. Results are shown for the performance of the element in relays on the Manitoba Hydro network during disturbances and from tests on the Real Time Digital Simulator (RTDS) in the Power Systems Laboratory at the University of Manitoba View full abstract»

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  • Using a VHF positioning system to map a native Indian reserve

    Publication Year: 1995, Page(s):451 - 455 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB)

    This paper discusses the use of Accutrak system's Agtrak 2020, a VHF radio based precise positioning and navigation system, to map the ThunderChild Native Indian Reserve in Saskatchewan, Canada. The VHF positioning system operates at the bottom of the VHF spectrum at 44 MHz, and has the advantage of bending and penetrating obstacles as compared to higher frequencies. This paper also highlights the... View full abstract»

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  • Application of electromagnetic transient simulation for the solution of HVDC control problems

    Publication Year: 1995, Page(s):283 - 288 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (416 KB)

    The paper describes how an electromagnetic transient simulation program (EMTPDC) was used in the design of modifications to the controls of an HVDC converter that was experiencing commutation failures from AC voltage disturbances. These events were reviewed by the valve supplier and two control modifications were proposed. The purpose of the simulation study was first to reproduce measurements rec... View full abstract»

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  • Optical fibre alignment using micromachines

    Publication Year: 1995, Page(s):371 - 376 vol.2
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (568 KB)

    This paper discusses the use of micromachined actuators for aligning optical fibres. A number of test actuators including comb structures, magnetic fluid positioners, piezoelectric fibre positioners and electrostatic micro-relays have been designed. Some of these structures were post-processed using the anisotropic etchants EDP and TMAH. Experiments with etchants revealed that multilayer aluminum/... View full abstract»

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  • Autonomous power management system for a small satellite

    Publication Year: 1995, Page(s):312 - 317 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (580 KB)

    An argument that a fuzzy system design methodology is better suited for the design of autonomous power systems than the currently used classical expert system methodology is presented. An architecture that incorporates fuzzy systems is developed for designing autonomous power management systems. The architecture was designed to meet both present and projected future technological requirements for ... View full abstract»

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  • A wireless CMOS implantable receiver for neuromuscular microstimulators

    Publication Year: 1995, Page(s):383 - 385 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (188 KB)

    Describes an integrated CMOS power supply and demodulator for electromagnetic coupling dedicated for biotelemetry applications. The device receives a 40-MHz carrier RF signal carrying digital information. This signal is rectified and regulated to 5V-DC voltage. Digital information is extracted from the rectified signal. This circuit is completely integrated in CMOS 1.2-μm technology except for ... View full abstract»

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  • HVDC transmission system models for power system reliability evaluation

    Publication Year: 1995, Page(s):501 - 507 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (460 KB)

    High voltage direct current transmission (HVDC) systems are finding increased use for long distance transmission of electrical energy from remote hydro electric generating stations to the load centers. The area of reliability evaluation of HVDC transmission systems has not attracted much attention in the past. The situation is changing as more and more DC links are being built, the need to develop... View full abstract»

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  • Implementation of a fuzzy logic-based seeding depth control system

    Publication Year: 1995, Page(s):489 - 494 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (468 KB)

    An implementation of a seeding depth control system utilizing fuzzy logic is presented. The control system presented here utilizes a microprocessor-based fuzzy logic control process in combination with a novel seeding depth gauge system and electrohydraulic control. The fuzzy algorithm is modelled upon expert human control by means of linguistic variables that describe the error between the measur... View full abstract»

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  • FDTD applications to electromagnetic interference and shielding

    Publication Year: 1995, Page(s):478 - 482 vol.2
    Cited by:  Patents (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (308 KB)

    The finite difference time domain method (FDTD) is applied to two electromagnetic interference (EMI) problems. The technique is used to simulate fields to wire coupling. Two types of excitation are used in this simulation: a plane wave excitation and a dipole antenna. The effect of the shield (enclosure) presence on the strength of penetrated field is studied via the calculation of the shielding e... View full abstract»

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  • Application of modern power electronics in power tapping from HVDC transmission systems

    Publication Year: 1995, Page(s):306 - 311 vol.2
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (372 KB)

    In this paper, the problem of small power tapping from HVDC transmission systems is presented, and a practical solution, based on the solid state devices currently available in the market, is proposed. The proposed scheme, is then digitally simulated with the aid of the EMTDC/PSCAD software package. Simulation results prove the practicality of the proposed scheme. The performance of the control sy... View full abstract»

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  • Multifractal texture classification of images

    Publication Year: 1995, Page(s):438 - 444 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (544 KB)

    This paper presents a method for measuring the generalized information content in grey level images. This measure involves the use of a multifractal distribution function. The multifractal measure is based on the generalized entropy and correlation functions to determine the entropy distribution. The multifractal distribution function partitions the image into subsets, each of which has a differen... View full abstract»

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  • A Faraday effect based clamp-on magneto-optical current transducer for power systems

    Publication Year: 1995, Page(s):329 - 333 vol.2
    Cited by:  Papers (1)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    A new type of Faraday effect based magneto-optical current transducer (MOCT) has been developed. This paper presents the theoretical background, engineering design, and test results of this clamp-on MOCT. The sensor consists of two separate clamp-on parts. This design avoids the need to break the current carrying circuit in order to have the conductor enclosed by the optical path while keeping the... View full abstract»

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  • An algebraic construction method for cellular neural networks

    Publication Year: 1995, Page(s):427 - 431 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (276 KB)

    An algebraic method for construction of a cellular neural network (CNN) is derived. Using this method, CNNs for connected component detection and the maze problem are given in detail. Because the transition of states is included in the algebraic equations during the construction of the network, the network arrives at a unique solution in either a synchronous or an asynchronous operation process, a... View full abstract»

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  • Birdsong recognition with DSP and neural networks

    Publication Year: 1995, Page(s):409 - 414 vol.2
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB)

    Analysis of speech often begins with study of the vocal tract that created it. Bird vocalizations and human speech are generated by similar processes. This suggests that LPC coefficients extracted from birdsong samples could retain enough information to permit identification of species. In this paper we train a back-propagation neural network to recognize bird songs. We generated test and training... View full abstract»

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  • Phase-domain induction motor model for power system simulators

    Publication Year: 1995, Page(s):276 - 282 vol.2
    Cited by:  Papers (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (356 KB)

    Traditional induction motor models are either 60-Hz models for steady-state operation or dq0 models for transient analysis. This paper presents a general induction-motor model based directly on phase coordinates. Stator and rotor windings are seen as coupled coils, much like a transformer. For transient analysis, this model is basically the same (apart from the mechanical equations) as the standar... View full abstract»

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  • Guiding principles in controlling small automated vehicles

    Publication Year: 1995, Page(s):366 - 370 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (356 KB)

    This paper describes the principles of a control program that was used to drive a self-propelled, 25 HP lawnmower. The course to follow was predetermined and an integral part of the software program. It consisted of straight lines, 90 and 180 degree turns. The two critical pieces of information were the offset error and the angle the mower was, relative to the desired course. Determination of the ... View full abstract»

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  • Tools for rapid prototyping and microelectronic system design

    Publication Year: 1995, Page(s):468 - 472 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (432 KB)

    Microelectronic system design is undergoing rapid changes that dramatically affect the way microelectronic systems are designed and implemented. These changes are also having a direct impact on the way microelectronic design is taught in technical study programs such as engineering. We have been involved in a project over the past year to develop an environment for the design and rapid prototyping... View full abstract»

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