By Topic

Southeastcon '88., IEEE Conference Proceedings

10-13 April 1988

Filter Results

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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Detection of a variable reluctance machine's rotor position using a predictor corrector estimator

    Publication Year: 1988, Page(s):523 - 528
    Cited by:  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (452 KB)

    A technique termed a predictor corrector estimator (PCE), which estimates rotor position by measuring the machine's phase voltage, phase current, and rotor speed is proposed. These measurement are easily accessible, inexpensive, and reliable. The fast convergence properties of the estimation algorithm together with the quick and simple computational requirements suggest it use as a real-time estim... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A self-starting, axial-gap permanent magnet motor and adjustable-speed drive

    Publication Year: 1988, Page(s):518 - 522
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (268 KB)

    A 30-hp, 15,000-4/min, axial-gap permanent magnet motor and adjustable-speed drive have been designed, constructed, and tested. The direct-drive motor has 72 slots and uses a full-pitch winding. The rotor consists of eight 2.8 inch diameter NdFeB magnets which provide for high air-gap flux densities over a large range. The drive system provides for optimum motor efficiency at all speeds and loads ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • New design criteria for the grounded base oscillator

    Publication Year: 1988, Page(s):515 - 517
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (148 KB)

    Design information for the grounded base or Butler oscillator is now available in books but there is still a need for clarification on sizing of the feedback capacitors and design to achieve specified signal levels. A designer must choose a definite set of values and this should be a best choice in some sense. The question is elaborated on using maximum gain as the optimum criterion because this r... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Frequency domain analysis of crosstalk in coupled microstrip lines

    Publication Year: 1988, Page(s):502 - 505
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (196 KB)

    A method for the analysis of coupled transmission lines in the Fourier transform (frequency domain) is presented. This enables an easy interpretation of results along with means of direct comparison of measurements done in the frequency domain. The results obtained are compared with those obtained through computer simulation carried out in the frequency domain using the SPICE simulation package. M... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A miniature DC-DC converter for medical implants

    Publication Year: 1988, Page(s):430 - 434
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (340 KB)

    The design technique for the converter is based on general formulation and solution of the governing electromagnetic field equations utilizing variational methods in conjunction with an inverse procedure to predict the geometries of transformer magnetic circuits. The technique is applicable for both low- and high-frequency designs, and is powerful in handling nonlinear magnetic materials View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Mobile robot survival

    Publication Year: 1988, Page(s):497 - 501
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB)

    Mobile robots designed for use in hazardous environments around nuclear reactors or nuclear power plants are subjected to a number of threats that may severely damage or result in the loss of an expensive robot. A number of threats are examined. Most of the threats can be counteracted by the use of proper sensors and appropriate computer-based artificial intelligence. The best defense is to detect... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • High voltage isolation of thermocouples for ion plating

    Publication Year: 1988, Page(s):511 - 514
    Cited by:  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (204 KB)

    Instrumentation has been developed to isolate part thermocouples from ground by up to 10.6 kV during ion plating. A fiber-optic link provides signal isolation and errors of better than ±0.5% of full scale (485°C with type-K thermocouples). Cold-junction compensation and signal gain are provided. A computer interface to the analog output is connected to a thermocouple linearizer, maximum... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Manufacturing workcell modelling and task facility

    Publication Year: 1988, Page(s):492 - 496
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (356 KB)

    The manufacturing workcell modeling and tasking facility acts as an interface between the physical world of the manufacturing workcell and the database of workcell models and tasks. The modeling and monitoring interface provides an expert manufacturing user with a data definition language for describing instances of manufacturing workcell components. The tasking interface uses the workcell models ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A computerized transcription system for cursive shorthand writing

    Publication Year: 1988, Page(s):336 - 339
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (264 KB)

    A structural recognition approach to the problem of computerized transcription of cursive shorthand (SH) writing is described. Methods of extracting critical points and segmentations of SH outlines are presented. Critical points are cusps, self-intersections, and corners (discontinuities in curvature). The authors have designed a software that recognizes SH words written separately and made up of ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A data flow evaluator for attribute grammars

    Publication Year: 1988, Page(s):373 - 377
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB)

    The attribute evaluation is accomplished in one bottom-up pass and data flow fashion. This results in a fast and parallel evaluation of the attribute instances. The bottom-up evaluator uses one FIFO (first-in, first-out) queue which initially holds the leaf attributes with known values in the reverse dependency graph. The reverse dependency graph shows the dependency of the attributes on each othe... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Integrated robotics control

    Publication Year: 1988, Page(s):488 - 491
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (284 KB)

    An integrated environment for robotics control is presented. A case study using an IBM PC and a Heath Kit Hero-1 robot is discussed. The implementation includes immediate robot online mode and an integrated control mode which allows object recognition results to be communicated to the robot. The integrated environment also offers memory management for the robot's user memory and controls the commu... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A PC-based receiver-decoder for remote sensor monitoring

    Publication Year: 1988, Page(s):332 - 335
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (272 KB)

    A PC-based serial data receiver-decoder that decodes biphase-mark encoded data is described. Its design philosophy, data format, and hardware implementation are described. Two serial-interface board designs as well as the advantages and disadvantages of both are discussed. The important software features implemented for control of this system are described. Some application information is also dis... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A robot control language

    Publication Year: 1988, Page(s):413 - 416
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (236 KB)

    A robot control language (ARCL) which is based on Pascal-like syntax is presented. Language constructs are designed to allow robot motion control with relative and absolute commands to all its motors. In addition, sensory control of robot sensors is allowed by enable and disable commands. Robot speech is programmed using phonemes, and a dictionary of commonly used words facilitates speech programm... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A mixed-modem approach to data isolation on a broadband local area network

    Publication Year: 1988, Page(s):36 - 39
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (300 KB)

    Isolation can be obtained by using equipment from more than one manufacturer to introduce incompatibility between nonassociated users. The basis for isolation is developed and it is postulated that four layers of isolation will exist when the proper equipment is chosen. An experimental broadband local area network (LAN) was constructed to verify isolation. This independent network allowed variatio... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Modeling of crosstalk in coupled microstrip lines

    Publication Year: 1988, Page(s):506 - 510
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (244 KB)

    A computer simulation of the crosstalk between coupled microstrip lines in both the time and frequency domains is presented. A SPICE software package is used to include inductive and capacitive coupling effects. The crosstalk results for various line parameters and line terminations are compared with results published in the literature. A technique for correlating the time- and frequency-domain cr... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Optical signal processing using a Vander Lugt three plane correlator

    Publication Year: 1988, Page(s):327 - 331
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (372 KB)

    Scene matching and object correlation, using a Vander Lugt optical correlator, has recently been found to be very attractive to high-speed image-processing systems. The results of ongoing research concerned with the development and operation of a three-plane optical correlator using spatial light modulators to inject binary-phase-only filter masks into the Fourier plane of the system are presented View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.