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Southeastcon '88., IEEE Conference Proceedings

10-13 April 1988

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Displaying Results 1 - 25 of 143
  • Conference Proceedings: 1988 IEEE SOUTHEASTCON (Cat. No.88CH2571-8)

    Publication Year: 1988
    Request permission for commercial reuse | PDF file iconPDF (36 KB)
    Freely Available from IEEE
  • Z-80 CPU Bus Monitor/Analyzer

    Publication Year: 1988, Page(s):181 - 185
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (298 KB)

    The Z-80 CPU Bus Monitor/Analyzer is a custom-designed circuit that was developed to further enhance the capabilities of an 8-bit-microprocessor training system presented at the University of Louisville. Although originally designed to be used with the Z-80 based FOX Microprocessor Training System, the unit can just as easily be used with any 8-bit microprocessor system that supports the popular S... View full abstract»

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  • An expert system for matrix analysis (ExMat)

    Publication Year: 1988, Page(s):533 - 536
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (206 KB)

    A rule-based expert system (ExMat) for analyzing matrices and systems of linear equation is presented. ExMat allow the user to enter a coefficient matrix and the right-hand side vector of the system. Based on rules derived from the subject area of matrix theory and matrix numerical analysis, ExMat provides an expert analysis of the system. The analysis includes solvability of the systems, and the ... View full abstract»

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  • Parameter estimation of delay systems

    Publication Year: 1988, Page(s):50 - 54
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (244 KB)

    An algorithm for parameter estimation of a class of stochastic hereditary systems, including state-space systems and systems with delays, is presented. In particular, the form of a linear input-output operator A is assumed subject to the determination of a vector of parameters γ. Measurements are made of the process x= A(γ)z, where z is a Ga... View full abstract»

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  • Some applications of the current divider principle to physical networks: a network thermodynamic approach to a `biological' circuit theory

    Publication Year: 1988, Page(s):424 - 429
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (412 KB)

    Network thermodynamics is a relatively young field, in which classical network theory is applied to a broader class of systems than those traditionally found in electronics. L. Peusner (1986) has developed a technique for treating chemical reaction kinetics as resistive networks in the steady state and as R-C networks in the transient state. Simulation programs originally designed for circuit simu... View full abstract»

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  • Fast solution techniques in 3D electromagnetic field problems

    Publication Year: 1988, Page(s):322 - 326
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (356 KB)

    A fast Newton-Raphson Technique (FNR) for the computation of nonlinear three-dimensional finite-element magnetic fields in electrical devices is presented. The technique reduces by more than 50% the CPU time required for complete and converged nonlinear three-dimensional magnetic field solutions. This is in comparison with the standard Newton-Raphson (NR) technique. The significant reduction in CP... View full abstract»

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  • Multisignal spectral estimation using an iterative relative entropy method

    Publication Year: 1988, Page(s):45 - 49
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (212 KB)

    A generalization of a method of spectral estimation by M.A. Tzaness, Ch. Moussas, and N.S. Tzannes (1984) is presented. The algorithm extends the method to the multiple signals case while still using an iterative procedure of the relative entropy method for estimating the spectral densities of the multisignal input data. Several current methods of relative entropy spectral estimation which involve... View full abstract»

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  • An instrumentation system for measurement of the electrical insulating properties of materials used on spacecraft power systems

    Publication Year: 1988, Page(s):421 - 423
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (212 KB)

    A test system consisting of three systems to accurately measure DC surface and volume resistivities, capacitance, and dissipation factor of insulating materials used on solar cell arrays on spacecraft power systems, is described View full abstract»

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  • A structured light method for sensing alignment during automated truss assembly

    Publication Year: 1988, Page(s):685 - 689
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (264 KB)

    Visual processing is an important link in the control of an intelligent robotic system. The principle and construction of a structured light pattern for aligning two cylindrical beams axially is described. A TV camera is used to process the light and shadow information to obtain equations of the axes of the cylindrical beams using triangulation. The amount and direction in which the cylindrical be... View full abstract»

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  • An inverse technique for the design of electromagnetic devices

    Publication Year: 1988, Page(s):318 - 321
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (244 KB)

    An inverse finite-element method for the design of nonlinear magnetic devices is presented. The objective of applying the finite-element method in an inverse manner is to yield the optimum geometry while maintaining the operating performance requirements of the device. A nonlinear iron-cored inductance coil, which involves a relatively complex magnetic circuit topology, was used as an application ... View full abstract»

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  • Design and automatic generation of a CMOS NOR-NOR testable programmable logic array (CTPLA)

    Publication Year: 1988, Page(s):1 - 5
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (404 KB)

    A CMOS NOR-NOR testable PLA (CTPLA) which has a universal test set is discussed. Berkeley VLSI tools were used to implement and verify the design. The PLA contains an extra row and a column, along with a shift register and two cascades of exclusive-OR (EXOR) gates, to make it testable. The layout of the CTPLA was implemented such that the inherent regularity of the PLA can be maintained without un... View full abstract»

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  • Reference plane shift considerations for microstrip branch-line couplers

    Publication Year: 1988, Page(s):576 - 578
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (164 KB)

    A design method for microstrip branch-line couplers is investigated. The predominant design goal is to create a couple whose direct coupling and isolation response are centered about the correct frequency. Two separate designs are considered. One design considers the reference plane calculation at each tee junction in the device while another is based on a much less tedious design technique. Accur... View full abstract»

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  • Analysis of energy usage data for water heaters under load control

    Publication Year: 1988, Page(s):273 - 277
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (260 KB)

    The data obtained in load control experiments on water heaters carried out on a distribution system are analyzed and the diversified load patterns and energy usage determined. General conclusions about the effects of load-control strategies on water heaters are made View full abstract»

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  • Beyond vectors-parallelism for other algorithms

    Publication Year: 1988, Page(s):112 - 116
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (228 KB)

    The use of a set of general purpose, readily available and highly portable parallel programming software tools is discussed. The tools, in the form of C macros, may be used in either a shared-memory or a message-passing environment and are available for a variety of multiple-processor computers. The use of the macros in the implementation of parallel versions of the Sieve of Eratosthenes in a shar... View full abstract»

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  • A simulation study of a limited sensing random access algorithm for a local area network with voice users

    Publication Year: 1988, Page(s):40 - 44
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (316 KB)

    Random access algorithms have proven to be very efficient in local area network environments with data users. However, in contrast to data packets, voice packets cannot experience long delays, because of the requirement that a voice data stream must be played out at the receiver. If a voice packet exceeds its established maximum delay, it is discarded. By a simulation, the authors find the number ... View full abstract»

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  • Invisible fluorescent code reader

    Publication Year: 1988, Page(s):417 - 420
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (188 KB)

    An invisible fluorescent code reader which functions as an identification detector and is designed primarily for security purposes is discussed. The identification source is a fluorescent code that cannot be seen in visible light of the spectrum from approximately 400 nm to 800 nm in wavelength. However, this code becomes visible when it is exposed to ultraviolet radiation. The code is then detect... View full abstract»

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  • Fabrication of optical waveguides and determination of their properties

    Publication Year: 1988, Page(s):674 - 678
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (276 KB)

    For the fabrication of optical waveguides, a silver film was vacuum-evaporated onto a glass substrate and then annealed at 300-400°C while applying an external electric field (0-70 V/mm) perpendicular to the substrate surface. The enhancement of the index of refraction (0-0.080) was larger for a stronger electric field. Index profiles of waveguides were determined with a scanning electron micr... View full abstract»

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  • Derivation of redundant wrist manipulators to avoid interior workspace singularities

    Publication Year: 1988, Page(s):403 - 407
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (300 KB)

    Nonredundant manipulators with six joints have interior workspace singular configurations at which the manipulators lose one of their orienting degrees of freedom. Various types of workspaces, configuration space and boundary are defined in order to discuss the cause of manipulator degeneracies. The symbolic Jacobian is used to explore the singularities of a spherical wrist. The redundant spherica... View full abstract»

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  • Magnetic traction force on paramagnetic particles in an HGMS utilizing a single-wire system carrying current

    Publication Year: 1988, Page(s):314 - 317
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (136 KB)

    The magnetic traction force which attracts paramagnetic particles from a fluid towards a single-wire system carrying current is calculated. The equations are developed when an external magnetic field H0 is applied along: the positive x-, the negative x-, the positive y-, and the negative y -directions, respectively View full abstract»

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  • Automatic finite element grid generation in electromagnetics

    Publication Year: 1988, Page(s):571 - 575
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB)

    An automatic two-dimensional finite-element grid generator, which would greatly assist in improving preprocessing operations, and geometry handling, for electromagnetic field computations is presented. The algorithm developed iteratively triangulates a set of points, defining a field region, into optimal finite-element meshes. The mathematical procedures used in developing the algorithm is based o... View full abstract»

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  • An elementary processor for a neural computer

    Publication Year: 1988, Page(s):628 - 632
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    An analysis of a currently available analog neuron model is presented and an elementary processor is developed as a neuron-like element in a digital system. The elementary processors are composed of digital cells which are the most primitive elements in a digital system. A network of digital cells can be used to implement any digital logic functions and the elementary processor is the systematic o... View full abstract»

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  • Optimal load shedding methodologies in power systems

    Publication Year: 1988, Page(s):269 - 272
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (260 KB)

    The current status of research on load shedding techniques is reviewed and the importance of relay setting is discussed. Alternatives for the future are also proposed. Future schemes should be able to precisely identify overload on a system and shed the necessary amount of load. The number of load-shedding steps and the amount of load shed each step should be computed online in the future; it will... View full abstract»

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  • Expert systems and power system planning in developing countries

    Publication Year: 1988, Page(s):551 - 555
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB)

    Expert-system technology is used to assist planning of capacitor installations on a power system. The solution is verified by comparing confidence factors to loss reductions caused by installing capacitors individually on each bus of the power system. The prototype expert system runs on a PC. The application of expert-system technology to power-system planning is then a step further. An expert-sys... View full abstract»

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  • Best regular enclosures for triangles

    Publication Year: 1988, Page(s):368 - 372
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (396 KB)

    An interesting variant of polygon approximation problems is described: for a given convex polygon P, which of the smallest k-gonal enclosures for P, k⩾3, has minimum area? A proof of the finite nature of the value of k which answers this problem (the Kosaraju number of the polygon), as well as several of its other versions, is outlined. The provable... View full abstract»

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  • A parallel architecture graphics processor

    Publication Year: 1988, Page(s):108 - 111
    Cited by:  Patents (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (236 KB)

    A parallel architecture for realizing a graphics system for real-time display of computer-generated images is proposed. The graphics architecture is configured with an arbitrary number of identical channels. The screen display space is partitioned into n2 zones. The implementation algorithms are distributed in three stages of n processors connected by n×n View full abstract»

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