Browsing Electrical Engineering by Issue Date
Now showing items 1-20 of 177
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Real-time interactive multiprogramming.
(1978)This thesis describes a new method of constructing a real-time interactive software system for a minicomputer to enable the interactive facilities to be extended and improved in a multitasking environment which supports ... -
The lightning ground flash : an engineering study.
(1979)The thesis is concerned with a study of the electrical engineering parameters of the lightning ground flash - i.e. the statistical distributions of peak current amplitudes, discharge current waveform characteristics, and ... -
A software speech recognition system using a phonetic approach.
(1985)Computer speech recognition techniques were investigated. This investigation included a study of the hearing and speech process. An algorithm was developed that used nine features to identify the phonemes in speech signals. ... -
Modelling and analysis of turbogenerators in single machine and multi- machine subsynchronous resonance studies.
(1987)Subsynchronous Resonance (SSR) is a condition which occurs when turbogenerators are connected to series capacitively compensated transmission systems and it can cause large scale damage to the turbogenerators. The ... -
Colour measurement and colour reproduction systems.
(1987)Techniques of colour measurement and colour reproduction are important in a wide range of commercial and social activities in most modern economies. Their study thus constitutes one of the major areas of interest to the ... -
A graphic rasterizer IC.
(1987)A single chip line-rasterizer that overcomes the major bottleneck in graphics display systems has been designed by the author on a 4408 element gate array marketed by Plessey Semiconductors limited. The rasterizer was ... -
The Analysis of computer systems for performance optimisation.
(1987)The project investigated the problem of performance optimisation of computer systems at the systems level. It was ascertained that no generally accepted technique for approaching this problem exist. A theoretical approach ... -
Data base optimisation for an I.C. design layout package on the VAX.
(1987)The performance of an interactive graphics/computer aided design system, such as the IC layout and rule checking package implemented as part of the schematic drawing application on the Gerber Systems Technology IDS-80, ... -
Implementation of a proprietary CAD graphics subsystem using the GKS standard interface.
(1989)This project involved porting a Graphical Software Package (GSP) from the proprietary IDS-BO Gerber CAD system onto a more modern computer that would allow student access for further study and development. Because of the ... -
Numerical alogrithms for PWM modulators.
(1989)The development of a simple efficient Pulse Width Modulation (PWM) modulator has been a goal for many research workers. In general three techniques have been used, namely; the analogue triangular wave technique; the use ... -
Quantitative feedback design and construction of a two by two system with large disturbances.
(1989)The quantitative feedback theory (QFT) of Horowitz is theoretically well developed for multivariable systems but there is not sufficient knowledge on its application to practical problems. A "flying machine" consisting ... -
A gridless, variable perveance Pierce electron gun.
(1994)This thesis covers the design and development of a modulated Pierce electron gun used in the construction of experimental travelling wave tube (TWT) amplifiers. The gun incorporated an open aperture switching electrode, ... -
Performance, models and topologies of common channel signalling system number seven.
(1998)An Intelligent Network (IN) can be visualised as a central computer interconnected to the telecommunication network that allows the creation and deployment of services as consumer demand arises. Messages or information ... -
Multiple ring networks in clustered traffic environments.
(1998)Ring networks are appropriate for the full range of network levels, including multiprocessor systems, local area computer networks and high speed backbones. The most well known and widely implemented examples are the IBM ... -
The application of controllable inverter-based series compensation to power oscillation damping.
(2000)Poorly damped oscillations that occur between the generators in large interconnected power systems often limit the amount of power that can be transmitted through a transmission corridor and are a threat to secure system ... -
A low cost, high performance pc based integrated real-time motion control development system.
(2000)The control of electrical drives, or motion control, is important in modern industry. In order to satisfy the requirements of industry, it is important for tertiary institutions to produce graduates skilled in this field. ... -
Performance analysis of cellular networks.
(2000)Performance analysis in cellular networks is the determination of customer orientated grade-of-service parameters, such as call blocking and dropping probabilities, using the methods of stochastic theory. This stochastic ... -
The design of an HF band direct sequence point-to-point link for rural telecommunications.
(2000)The following work documents the design of an HF band direct sequence point-to-point link as used in a rural environment. The dissertation begins with a description of the overall document layout. An introduction into ... -
Feasibility study of a neural network current controller for a boost rectifier.
(2000)During the past two decades, Quality of Supply has become a serious problem for Variable Speed Drives in the industrial and commercial sectors. Quality of Supply problems can trip Variable Speed Drives, which results in ... -
Power control in multimedia CDMA cellular networks.
(2000)Wireless mobile communication is witnessing a rapid growth in, and demand for, improved technology and range of information types and services. Further, third generation cellular networks are expected to provide mobile ...