By Topic

7-9 March 1995

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Displaying Results 1 - 25 of 73
  • Proceedings of Southcon '95

    Publication Year: 1995
    Request permission for commercial reuse | PDF file iconPDF (163 KB)
    Freely Available from IEEE
  • Electric conversion vehicle air-conditioning project

    Publication Year: 1995, Page(s):315 - 320
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (472 KB)

    This paper examines an air conditioning system for an electric vehicle. A 1985 Ford Lynx is the subject car. The design conditions are Orlando's 1% mean dry and wet bulb temperatures. The cooling load temperature difference method is used to calculate the heat gain using August data at 28° north latitude. To reduce the required power for the compressor, the thermal resistance of the vehicle wa... View full abstract»

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  • An intelligent power supply conditioning system using an embedded microcontroller

    Publication Year: 1995, Page(s):100 - 105
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB)

    Uninterruptible power supplies present a method to quickly detect a loss of power and replace the defective power source before any damage or corruption occurs. Using an inverter circuit to generate a square wave for a DC source can supply a crude approximation of an AC wave form. Obviously, the harmonic content is high and voltage regulation and current limiting are essentially non-existent. The ... View full abstract»

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  • Transport in one-dimensional semiconductor devices

    Publication Year: 1995, Page(s):73 - 78
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB)

    A novel quantum well wire (QWW) realized in a high electron mobility transistor structure is presented. The QWW structure is incorporated in the design of one-dimensional modulation-doped field-effect transistor (1-D MODFET) and one-dimensional quantum interference transistor (1-D QUIT) structures. Transport characteristics of the AlGaAs-GaAs 1-D MODFET and 1-D QUIT are presented and compared with... View full abstract»

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  • Topical overview of soft-switching PWM high frequency converters

    Publication Year: 1995, Page(s):47 - 52
    Cited by:  Papers (6)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (580 KB)

    A topical overview of the field of soft-switching PWM DC-DC converters is presented. Over sixty papers published in the 1993-4 have been reviewed and categorized according to the various resonant techniques, control schemes, application requirements or devices used. Also covered are the zero-current and zero-voltage-transition techniques which are at the forefront of research View full abstract»

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  • Electrathon vehicle design

    Publication Year: 1995, Page(s):309 - 314
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (536 KB)

    Electrathon rallies are multi-vehicle competitions in which aerodynamic, lightweight electric vehicles meeting specific design and safety rules are raced. The objective is to travel the furthest distance in one hour on a limited charge, supplied by deep cycle marine type lead-acid battery packs. The rallies, open to any individual, club or educational institution, have been a popular sport in Grea... View full abstract»

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  • Microprocessor tutorial using toolbook

    Publication Year: 1995, Page(s):132 - 136
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (484 KB)

    In this paper, we describe an MS-Windows based interactive tutorial that provides the students in electrical/computer engineering and/or computer science programs with an easy-to-use reference and overview of a course in microprocessors and their applications. This tutorial is designed to give these students an enhanced understanding of microprocessors and their applications. This multimedia-based... View full abstract»

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  • Intelligent peripheral modules for microcontrollers

    Publication Year: 1995, Page(s):90 - 99
    Cited by:  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (632 KB)

    The modular concept of microcontroller design provides the means whereby each module can have it's own local microengine or state machine. The main CPU communicates with the modules through dual access memory, issuing commands to semi-intelligent state machines or writing directly to registers in the module. Once a module has been given a command sequence, the peripheral can act autonomously from ... View full abstract»

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  • Synchronous DRAM products evolutionize memory system design

    Publication Year: 1995, Page(s):70 - 72
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (228 KB)

    Main memory devices, DRAMs, have traditionally quadrupled in size from one generation to the next with limited speed improvements. High speed SRAM caches have usually filled the bandwidth gap between MPU and DRAMs. Designers have recently realized that with the increased software complexity and MPU speed requirements, SRAM caches alone might not be able to provide the ultimate Performance/Cost sol... View full abstract»

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  • Reducing development time and cost through effective project management

    Publication Year: 1995, Page(s):232 - 235
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (480 KB)

    The more complex a development effort the more difficult it is to reduce or control the project's schedule and cost. The use of concurrent engineering in the development cycle only exacerbates the problem by increasing the number of departments and people involved at any point in the development effort. Breakdowns in the process can have devastating effects on the project schedule and double or ev... View full abstract»

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  • Energy efficient DSP architectures for VSELP speech coder

    Publication Year: 1995, Page(s):176 - 181
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (212 KB)

    One of the primary objectives in the design of digital portable radio is power reduction required to maximize run time and minimize battery size and weight. Available power saving strategies such as dynamic power level control and discontinuous transmission are limited in their scope. A more effective approach is to operate the processors at the lowest supply voltage without incurring reduction in... View full abstract»

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  • Improving generalization by using genetic algorithms to determine the neural network size

    Publication Year: 1995, Page(s):392 - 397
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (468 KB)

    Recent theoretical results support that decreasing the number of free parameters in a neural network (i.e., weights) can improve generalization. The importance of these results has triggered the development of many approaches which try to determine an “appropriate” network size for a given problem. Although it has been demonstrated that most of the approaches manage to find small size ... View full abstract»

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  • Dynamic CPU cache management under the loop model

    Publication Year: 1995, Page(s):279 - 284
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (308 KB)

    Concerns cache designs using replacement strategies to provide the high performance required by fast CPUs. We propose a new replacement technique that uses some heuristic to detect loop structures in the reference patterns. Initially, the proposed technique uses the least recently used (LRU) strategy. Once a loop has been detected, all the references, which would result in poor performance if they... View full abstract»

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  • Improved lead-acid battery management techniques

    Publication Year: 1995, Page(s):41 - 46
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB)

    The consumer and industrial markets are experiencing unprecedented demand for battery management technology. Consumer appetite for the convenience of battery-powered portable equipment such as cellular phones and small form-factor computers is continuing to expand. The industrial market is being besieged by governmental regulations and consumer concerns on environmental pollution. This has increas... View full abstract»

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  • Designing an electric vehicle conversion

    Publication Year: 1995, Page(s):303 - 308
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (456 KB)

    National efforts to improve air quality in heavily populated urban communities-by reducing vehicular tailpipe emissions-have rekindled interest in the development of electric vehicle technology and infrastructure. Electric vehicles make ideal urban-commuter vehicles, for driving to and from, and within a city. However, electric vehicles are currently manufactured only in low volumes, and consequen... View full abstract»

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  • Developing a high efficiency means of propulsion for underwater vehicles

    Publication Year: 1995, Page(s):352 - 356
    Cited by:  Papers (1)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (720 KB)

    Harbor Branch Oceanographic Institution's Engineering Division has developed and patented a highly efficient ring thruster for underwater vehicle propulsion. This brushless electric propulsion device has no seals or motor pressure housings, simplifying maintenance under operating conditions. Light weight and reliability are other design criteria for Harbor Branch's manned submersibles, ROVs and AU... View full abstract»

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  • Adaptive control of open-loop unstable systems with input and state constraints

    Publication Year: 1995, Page(s):127 - 129
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (172 KB)

    The problem of stabilization and null controllability of open loop unstable discrete-time multi-input systems with constraints on the states and the control was addressed in a previous paper (see Proc. 32nd IEEE Conf. Decision and Control, San Antonio, TX, USA, IEEE, p.3473-8, 1994). In the present paper we analyze some of the properties of the suggested quadratically saturating control, and exten... View full abstract»

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  • Vibration analysis of an electronic enclosure using finite element analysis

    Publication Year: 1995, Page(s):328 - 333
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (472 KB)

    Finite element analysis is used to predict the response of a rectangular box electronic enclosure and PWB to a random vibration load. Comparison of results is made for different modeling methodologies, including the effects of mesh size and mass distribution techniques View full abstract»

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  • Using background modes for testing, debugging and emulation of microcontroller

    Publication Year: 1995, Page(s):84 - 89
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (356 KB)

    The background mode of operation for the M68MC16 and M68300 families of microcontrollers has provided a method whereby an external host development system can take control of the microcontroller causing it to execute certain elementary commands. As shown here, a more complex system can be built using the background mode as a base to form an inexpensive, yet capable, emulation system. The addition ... View full abstract»

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  • Negative feedback control design for a PWM-buck converter

    Publication Year: 1995, Page(s):60 - 67
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (268 KB)

    This paper uses a conventional pulse width modulator (PWM) control method to design a negative feedback controller for the PWM-buck converter. The main objective in using the conventional control is to design a stable compensator in the closed loop to provide stability and improve the performance for the power supply for the parameter variations, load changes, and the equivalent series resistance ... View full abstract»

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  • Portable computer based language translation

    Publication Year: 1995, Page(s):141 - 146
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (388 KB)

    This paper discusses a battery operated handheld device for use in translation between different languages. Development and advances in the fields of speech recognition, DSP microprocessors, and memories (especially flash memories) make it possible to design and implement a device that can take words or sentences or even sounds on the input and maps or translate them into synthesized speech on the... View full abstract»

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  • Power electronics education: courses and laboratory

    Publication Year: 1995, Page(s):240 - 245
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (496 KB)

    This paper presents a detailed description of the undergraduate and graduate education in the field of power electronics. Suggested power electronics undergraduate and graduate curriculum along with key course contents are presented. An outline for the simulation and hardware laboratory as a supporting facility for effective power electronics education is also addressed View full abstract»

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  • Selection of transforms including radial basis functions in class 1 filters

    Publication Year: 1995, Page(s):182 - 187
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (388 KB)

    Class 1 filters utilize expected signal, noise, and their correlations to form estimation, detection, correlation, and other types of algorithms. The authors discuss the selection of transforms including radial basis functions in Class 1 filters. These results are used to process EKG signals and demonstrate that transforms and filters must be properly matched View full abstract»

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  • A new dual-bus metropolitan area communication network

    Publication Year: 1995, Page(s):224 - 229
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (348 KB)

    Describes and analyzes a new architecture for metropolitan area networks (MANs). The architecture is based on a slotted unidirectional dual bus structure and is called dual bus R-net. A master station for each bus generates transmission frames that consist of a reservation slot and various information slots. The information slots are reserved by stations using the reservation slot before they can ... View full abstract»

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  • Wavelet modulation: a prototype for digital communication systems

    Publication Year: 1995, Page(s):168 - 171
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (248 KB)

    The wavelet transform has had an explosive development as a powerful tool of signal representation. It has been used successfully in many fields such as image processing, data compression and signal processing. Due to the fact that a wavelet can be chosen from a flexible class of analysis functions with different time-frequency localization properties, its performance surpasses that of the Fourier... View full abstract»

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