Browsing Masters Degrees (Electrical and Electronic Engineering) by Title

Now showing items 258-277 of 487

  • A finite element based optimisation tool for electrical machines 

    Gerber, Stiaan (Stellenbosch : University of Stellenbosch, 2011-03)
    ENGLISH ABSTRACT: Knowledge of the magnetic fields in the domain of electrical machines is required in order to model machines accurately. It is difficult to solve these fields analytically because of the complex geometries ...

  • Finite element tearing and interconnecting for the electromagnetic vector wave equation in two dimensions 

    Marchand, Renier Gustav (Stellenbosch : University of Stellenbosch, 2007-03)
    The finite element tearing and interconnect(FETI) domain decomposition(DD) method is investigated in terms of the 2D transverse electric(TEz) finite element method(FEM). The FETI is for the first time rigorously derived ...

  • A fixed-point DSP architecture for software-defined radio 

    Kriegler, Wouter (Stellenbosch : University of Stellenbosch, 2009-03)
    Due to ever evolving wireless communication standards and technologies, the need for more flexible radio terminals are becoming more sought after in order to adapt to these new standards. Software-defined radio offers a ...

  • Flicker mitigation in industrial systems 

    De Wit, Leon (Stellenbosch : University of Stellenbosch, 2006-03)
    This thesis investigates the compensation of voltage flicker in an industrial environment. Industrial loads draw progressively less sinusoidal currents. These currents cause non-sinusoidal voltage drop over the line ...

  • Flight control system for a variable stability blended-wing-body unmanned aerial vehicle 

    Blaauw, Deon (Stellenbosch : University of Stellenbosch, 2009-03)
    This thesis presents the analysis, design, simulation and practical implementation of a novel control system for a variable stability blended-wing-body unmanned aerial vehicle. The aircraft has a moveable centre of mass ...

  • Flight control system for an autonomous parafoil 

    Van der Kolf, Gideon (Stellenbosch : Stellenbosch University, 2013-12)
    ENGLISH ABSTRACT: This thesis presents the development of a flight control system (FCS) for an unmanned, unpowered parafoil and the integration with an existing parafoil system in collaboration with a team at the University ...

  • A fountain code forward error correction strategy for SensLAB applications 

    Du Toit, F. J. (Stellenbosch : Stellenbosch University, 2014-04)
    ENGLISH ABSTRACT: The discovery of sparse graph codes, used in forward error correction strate- gies, has had an unrivaled impact on Information theory over the past decade. A recent advancement in this field, called ...

  • FSK modem modules for SDR using different linux API's 

    Khaile, Patrick (Stellenbosch : Stellenbosch University, 2004-12)
    ENGLISH ABSTRACT: The purpose of this thesis is to implement the Frequency Shift Keying (FSK) modem modules for the Software Defined Radio (SDR), using different Linux sound Application Programming Interfaces (API's). The ...

  • Full scale low-cost ultra wide band antenna for SKA low frequency array 

    Schoeman, Dewald Hermanus (Stellenbosch : Stellenbosch University, 2013-03)
    ENGLISH ABSTRACT: This thesis is about the design, simulation and measuring of ultra wide band antennas for use in the Square Kilometre Array (SKA). The SKA is a radio astronomy project with one of the aims of detecting ...

  • Full state control of a Fury X-Cell unmanned helicopter 

    Van Schalkwyk, Carlo (Stellenbosch : University of Stellenbosch, 2009-03)
    This thesis describes the successful development of an autopilot for an unmanned radio controlled helicopter. It presents a non-linear helicopter model. An adaptive linearised model is derived and used to design a ...

  • Fusion of phoneme recognisers for South African English 

    Strydom, George Wessel (Stellenbosch : University of Stellenbosch, 2009-03)
    ENGLISH ABSTRACT: Phoneme recognition systems typically suffer from low classification accuracy. Recognition for South African English is especially difficult, due to the variety of vastly different accent groups. This ...

  • GaN microwave power FET nonlinear modelling techniques 

    Brooks, Clive Raymond (Stellenbosch : University of Stellenbosch, 2010-03)
    ENGLISH ABSTRACT: The main focus of this thesis is to document the formulation, extraction and validation of nonlinear models for the on-wafer gallium nitride (GaN) high-electron mobility (HEMT) devices manufactured at ...

  • Generalised density function estimation using moments and the characteristic function 

    Esterhuizen, Gerhard (Stellenbosch : University of Stellenbosch, 2003-03)
    ENGLISH ABSTRACT: Probability density functions (PDFs) and cumulative distribution functions (CDFs) play a central role in statistical pattern recognition and verification systems. They allow observations that do not ...

  • Handwritten signature verification : a hidden Markov model approach 

    Le Riche, Pierre (Pierre Jacques) (Stellenbosch : Stellenbosch University, 2000-12)
    ENGLISH ABSTRACT: Handwritten signature verification (HSV) is the process through which handwritten signatures are analysed in an attempt to determine whether the person who made the signature is who he claims to ...

  • Handwritten signature verification using hidden Markov models 

    Sindle, Colin (Stellenbosch : Stellenbosch University, 2003-12)
    ENGLISH ABSTRACT: Handwritten signatures are provided extensively to verify identity for all types of transactions and documents. However, they are very rarely actually verified. This is because of the high cost of ...

  • Harmonic interaction between weak AC systems and VSC-based HVDC schemes 

    Krige, Ernst (Stellenbosch : Stellenbosch University, 2012-12)
    ENGLISH ABSTRACT: The implementation of the Caprivi Link Interconnector (CLI) High Voltage Direct Current (HVDC) scheme in 2010 connecting the weak Namibian and Zambian Alternating Current (AC) transmission networks via ...

  • Harmonic mixer analysis and design 

    Van der Merwe, Marius (Stellenbosch : Stellenbosch University, 2002-03)
    ENGLISH ABSTRACT: Harmonic mixers are capable of extended frequency operation by mixing with a harmonic of the LO (local oscillator) signal, eliminating the need for a high frequency, high power LO. Their output spectra ...

  • High power LDMOS L-band radar amplifiers 

    McIver, Stuart Roderick Arthur (Stellenbosch : University of Stellenbosch, 2010-03)
    ENGLISH ABSTRACT: The thesis details the design, construction and experimental evaluation of 30W, 35W and 250W L-Band LDMOS Radar amplifiers. Each amplifier module contains an integrated high speed power supply in order ...

  • High voltage DC-DC converter using a series stacked topology 

    Van Rhyn, P. D. (Stellenbosch : University of Stellenbosch, 2006-03)
    This thesis presents the design and implementation of a high voltage DC-DC converter using a series stacked topology. The converter’s specifications were set by Spoornet and the converter forms part of a DC-AC inverter ...

  • High-power broadband absorptive waveguide filters 

    Stander, Tinus (Stellenbosch : University of Stellenbosch, 2009-12)
    ENGLISH ABSTRACT: This dissertation presents a synthesis method for broadband high-power absorptive microwave lters by cascading a wide stop-band wa e-iron lter with an absorptive harmonic pad. The classical image ...