Electrical and Computer Engineering, 1997. Engineering Innovation: Voyage of Discovery. IEEE 1997 Canadian Conference on

25-28 May 1997

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  • CCECE '97. Canadian Conference on Electrical and Computer Engineering. Engineering Innovation: Voyage of Discovery. Conference Proceedings

    Publication Year: 1997
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  • Trajectory Control Of Robotic Manipulators Using The Optimal Control Method

    Publication Year: 1997, Page(s):458 - 461
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  • Ship Predictor System (SPS)

    Publication Year: 1997, Page(s):524 - 525 vol.2
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (498 KB)

    Summary form only given. Manoeuvring and docking ships in confined waterways is difficult, time consuming and potentially dangerous. Disturbances caused by changing water currents, wind and waves, the rapidly changing effects of the sea bed, and by the approach of other ships add to manoeuvring difficulty. A ship's master or pilot can do little to counter these factors until their effect on the co... View full abstract»

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  • Authors index

    Publication Year: 1997, Page(s):1 - 6
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  • An updating service for Canadian electronic navigational charts

    Publication Year: 1997, Page(s):858 - 861 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB)

    In October 1990 the Canadian Public Review Panel on Tanker Safety and Marine Spills Response Capability identified oil spill prevention as the highest priority for protecting the coastal and marine environment. Specifically, it recommended that the Canadian Hydrographic Service (CHS): expedite development of electronic charting technology and the required infrastructure, then introduce regulations... View full abstract»

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  • Machine intelligence realised in a FPGA for smart sensor research

    Publication Year: 1997, Page(s):672 - 675 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB)

    This paper explores the concept of machine intelligence required for the smart sensor environment. The increasing complexity of the hardware requirements for smart sensor applications has led to the inclusion of field programmable gate arrays, FPGA, in the design of these systems. Two main advantages can be capitalized on with this approach, based on the characteristics of the FPGAs. Firstly, the ... View full abstract»

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  • Benefits of an integrated navigation system: US Coast Guard cutter JUNIPER leads the way

    Publication Year: 1997, Page(s):854 - 857 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (292 KB)

    USCGC JUNIPER is the first of a new class of US Coast Guard ships being built to replace the aging fleet of buoy tenders. Among the more advanced systems is a state-of-the art integrated navigation system (INS). Key components include, an electronic chart display and information system (ECDIS), a dynamic positioning system (DPS), and the use of a local-area network (LAN) that provides information ... View full abstract»

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  • Time-integrating acousto-optic correlation in Gaussian noise

    Publication Year: 1997, Page(s):666 - 671 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (476 KB)

    An acousto-optic time-integrating correlator with center frequency of 80 MHz, bandwidth of 40 MHz, a time aperture of 10 μs and a signal bandwidth of 20 MHz was designed and assembled. The influence of additive Gaussian noise on the correlation peak was measured and analyzed for varying SNR levels. A novel electronic method for estimating the overall optical misalignment in the processor was de... View full abstract»

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  • An improved gating technique for the synchronous rectifier MOSFETs in the forward converter topology

    Publication Year: 1997, Page(s):552 - 555 vol.2
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (280 KB)

    In this paper self-driven gating techniques for the synchronous rectifiers in a forward converter topology are discussed. Conventional implementations of gatings are investigated and their drawbacks are identified. An improved gating implementation is presented, which forces longer drain to source conduction of the rectifying MOSFET, protects it from excessive negative gate-source voltage stress, ... View full abstract»

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  • Hibernia oil production platform enhances safety and efficiency with on-line electronic documentation

    Publication Year: 1997, Page(s):850 - 853 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB)

    Through the implementation of an on-line document retrieval and viewing system, the Hibernia Management and Development Company Ltd. is fulfilling its commitment to safety, the environment and responsible operation of the Hibernia asset. Quick and easy access to critical technical documentation ensures Hibernia employees have the most up to date information available to them for troubleshooting, m... View full abstract»

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  • Low cost broadband ultrasonic transducers

    Publication Year: 1997, Page(s):662 - 665 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (260 KB)

    The design of a broadband wetted transducer involves stacking a piezoelectric device in layers of adhesives, electrodes and protective coatings. The frequency response of the transducer is heavily influenced by the electrodes, adhesives and protective coatings. A relatively new piezoelectric material, polyvinylidene fluoride, has a very flat linear phase response over a broad frequency band. This ... View full abstract»

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  • A back-up power supply for residential applications

    Publication Year: 1997, Page(s):646 - 649 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (316 KB)

    This paper presents a back-up power supply for residential applications. The proposed converter topology integrates battery charge/discharge functions and provides a controlled output voltage. The proposed circuit topology is analyzed and designed. A design example of a 300 W back-up power supply is given. A prototype converter is built and the experimental results show an overall rated efficiency... View full abstract»

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  • Ocean clutter suppression for an HF ground wave radar

    Publication Year: 1997, Page(s):512 - 515 vol.2
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB)

    At HF frequencies, the sea echo or clutter return is quite significant and can mask signals from targets travelling at or near the same Doppler of the resonant (Bragg) ocean waves. This paper presents a systematic method of reducing clutter signals so as to enable detection of targets travelling at speeds near the Bragg Doppler. The algorithm uses a Hankel rank reduction method that assumes that t... View full abstract»

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  • Analysis of a bi-directional DC-DC converter topology for low power application

    Publication Year: 1997, Page(s):548 - 551 vol.2
    Cited by:  Papers (12)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (340 KB)

    This paper describes a bidirectional DC-DC converter for use in low power applications. The converter is based on a half-bridge in the primary side and on a current fed push-pull in the secondary of a high frequency isolation transformer. In the presence of the DC mains (provided by the AC mains), the converter essentially operates in the buck mode charging the battery. On failure of DC mains the ... View full abstract»

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  • A shipboard system for remote real-time data collection and monitoring

    Publication Year: 1997, Page(s):847 - 849 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (228 KB)

    This paper describes a system for collecting data from a ship utilising the MSAT mobile satellite communications network. The system was extensively tested during the period from January-March 1997 on board a Canadian Coast Guard vessel. The results of these tests and future enhancements to the system are presented in this paper View full abstract»

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  • Optimal approximation of nonlinear functions by fuzzy systems

    Publication Year: 1997, Page(s):781 - 784 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (272 KB)

    This paper presents a novel approach to the optimal approximation of nonlinear functions employing fuzzy systems. The proposed approach, which is based on a genetic algorithm, also illustrates the underlying design principles of different parts of a fuzzy system. This insight is facilitated by our definition of characteristic points. To appreciate this concept, an illustrative example is employed.... View full abstract»

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  • Elimination of harmonics of multiconverters

    Publication Year: 1997, Page(s):419 - 422 vol.2
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    The suppression of higher harmonics is realised due to the increase of the pulsation index p of multiconverters. Two principal methods are known of the increase of p: the method of introducing the angle of phase difference between the primaries and secondaries of the transformer feeding the converters, and the increase of the number of phases q connected to the parallel double connections. The cla... View full abstract»

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  • Analysis and design of a near unity power factor single phase trapezoidal AC power supply

    Publication Year: 1997, Page(s):658 - 661 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (192 KB)

    Single phase AC power supplies used for powering optical fiber/coax cable are required to generate trapezoidal-shaped waveform. The proposed converter topology has the following main features: (a) a small DC bus capacitor resulting in a DC bus having a very large 120 Hz component; (b) an on-line instantaneous voltage controlled feedforward PWM pattern generator, based on reset integral control tec... View full abstract»

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  • Connection level priority/pre-emption service for ATM based defence networks

    Publication Year: 1997, Page(s):590 - 594 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (460 KB)

    Future military defence networks will use asynchronous transfer mode (ATM) technology. This paper defines the requirement for a connection level priority/pre-emption service in ATM to meet the needs of defence networks and presents the factors affecting its implementation. A solution for the addition of the service to the control plane of the ATM protocol reference model is presented, followed by ... View full abstract»

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  • A new model for constructing DCVS trees

    Publication Year: 1997, Page(s):641 - 645 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (280 KB)

    In this paper we introduce a new decision diagram based model, the 123-decision diagram, which can be used to efficiently synthesize DCVS circuits. We compare our approach to traditional DCVS synthesis techniques based on ordered binary decision diagrams(OBDDs) and show that our approach is guaranteed to perform as well as or better than OBDD based methods View full abstract»

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  • FPGA reconfigurability in the presence of logic and I/O faults

    Publication Year: 1997, Page(s):740 - 743 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (404 KB)

    The SRAM FPGA's reconfigurability is investigated with a view to addressing the problems of reparability through the utilization of a device's unused logic and routing resources. This is done by remapping the design such that the faulty logic is bypassed. This paper addresses the issue of mapping designs onto FPGAs with single and multiple logic and I/O block faults subject to the constraint that ... View full abstract»

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  • Image compression using adaptive lapped transforms

    Publication Year: 1997, Page(s):508 - 511 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (848 KB)

    A new lapped block transform coding method is proposed which adapts on a block-by-block basis across an image. It is an extension of the mixture of principal components (MPC) method. Instead of a non-overlapping blocking projection, an overlapping projection is used to partition the image into blocks. When applied to image compression, the use of the adaptive lapped MPC method results in better ra... View full abstract»

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  • Implementation issues for half-bridge and full-bridge active filters in single phase applications

    Publication Year: 1997, Page(s):544 - 547 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    Active filters are becoming a more and more effective means of eliminating harmonic currents generated by nonlinear loads in distribution systems. In single phase applications two topologies are available: (a) half-bridge, and (b) full-bridge. This paper focuses on the relative merits of both topologies. The performance of each topology is investigated. A detailed analysis is included to highlight... View full abstract»

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  • A method of tracking organ motion in medical CT systems

    Publication Year: 1997, Page(s):578 - 581 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (364 KB)

    Motion artifacts have been identified as a problem in medical tomography systems. This paper describes an approach which tracks the motion and allows the artifacts to be isolated. Two sources are utilized so that two sets of projections are generated that are identical in space but separated in time View full abstract»

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  • Site-specific, real-time forecasting system

    Publication Year: 1997, Page(s):526 - 527 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (96 KB)

    The RadarLink project proposes to develop an optimal system architecture, which will implement and demonstrate an information service tailored to meet the needs of Canada's Earth observation community. RadarLink will use the resulting real time stream of data to promote the development of three marine surveillance and monitoring applications which have identified commercial and social benefit. COR... View full abstract»

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