Browsing Masters Degrees (Electrical and Electronic Engineering) by Title

Now showing items 419-438 of 556

    • 'n Ondersoek na die geskiktheid van 'n datavloeiverwerker as 'n herstruktureerbare spesiale verwerker 

      Loubser, Nicolas Johan (Stellenbosch : Stellenbosch University, 1984-11)
      AFRIKAANSE OPSOMMING: Hierdie tesis behels 'n ondersoek na die geskiktheid van 'n datavloei-verwerker om as 'n herstruktureerbare spesiale verwerker te dien. Die werking van 'n datavloei-verwerkermodel word aan die ...

    • Natural balancing of the neutral-point-clamped converter 

      Salagae, Isaac Mahijoko (Stellenbosch : Stellenbosch University, 2003-12)
      ENGLISH ABSTRACT: The three-level neutral-point-clamped(NPC) converter, being a widely used multilevel inverter, received a lot of attention recently due to problems associated with de-link capacitor voltage balancing. ...

    • A network traffic analysis tool for the prediction of perceived VoIP call quality 

      Maritz, Gert Stephanus Herman (Stellenbosch : University of Stellenbosch, 2011-12)
      ENGLISH ABSTRACT: The perceived quality of Voice over Internet Protocol (IP) (VoIP) communication relies on the network which is used to transport voice packets between the end points. Variable network characteristics ...

    • Neural network models of slotted waveguide directional couplers 

      Muller, Martinette (Stellenbosch : Stellenbosch University, 2001-12)
      ENGLISH ABSTRACT: The application of artificial neural networks to microwave circuits is investigated. A neural network model is developed for two parallel waveguides coupled by a longitudinal slot in the common broad ...

    • Neutral-point-clamped shunt active filter 

      Van Greunen, Corneluis Erasmus (Stellenbosch : University of Stellenbosch, 2005-03)
      This thesis presents the design and implementation of a Neutral-Point-Clamped (NPC) shunt Active Filter (AF) for non-linear loads. A NPC shunt AF is an attractive solution for AFs at the medium volage level, because it ...

    • Nie-destruktiewe klankonttrekking, restourasie en spraakverheffing van Edison-fonograafsilinders 

      Van der Westhuizen, Ewald (Stellenbosch : Stellenbosch University, 2003-12)
      ENGLISH ABSTRACT: Two non-destructive methods of extracting audio from Edison phonographic cylinders were investigated. A recording device with high accuracy positioning was designed and manufactured. A microscopic image ...

    • Non-acoustic speaker recognition 

      Du Toit, Ilze (Stellenbosch : University of Stellenbosch, 2004-12)
      ENGLISH ABSTRACT: In this study the phoneme labels derived from a phoneme recogniser are used for phonetic speaker recognition. The time-dependencies among phonemes are modelled by using hidden Markov models (HMMs) for ...

    • Non-destructive measurement of internal fruit quality using SQUID-NMR techniques 

      Nturambirwe, Jean Frederic Isingizwe (Stellenbosch : Stellenbosch University, 2012-12)
      ENGLISH ABSTRACT: The SQUID-NMR technique has been increasingly recommended by many researchers as holding a lot of potential, and it is believed it will become an invaluable tool for non-destructive evaluation in the ...

    • Non-destructive testing of capless porcelain line post insulators to detect internal defects 

      Borrill, Leslie (Leslie David) (Stellenbosch : Stellenbosch University, 2003-12)
      ENGLISH ABSTRACT: This project relates to the unexplained failure of 33kV porcelain line post insulators in ESKOM's Southern Region. An initial investigation suggested that the failures could probably be due to a ...

    • An object detection approach for cluttered images 

      Kok, R. (Stellenbosch : Stellenbosch University, 2003-12)
      ENGLISH ABSTRACT: We investigate object detection against cluttered backgrounds, based on the MINACE (Minimum Noise and Correlation Energy) filter. Application of the filter is followed by a suitable segmentation algorithm, ...

    • Object recognition and automatic selection in a Robotic Sorting Cell 

      Janse van Rensburg, Frederick Johannes (Stellenbosch : University of Stellenbosch, 2006-12)
      This thesis relates to the development of an automated sorting cell as part of a flexible manufacturing line, with the use of object recognition. Algorithms for each of the individual subsections creating the cell, ...

    • Occupancy grid mapping using stereo vision 

      Burger, Alwyn Johannes (Stellenbosch : Stellenbosch University, 2015-03)
      ENGLISH ABSTRACT: This thesis investigates the use of stereo vision sensors for dense autonomous mapping. It characterises and analyses the errors made during the stereo matching process so measurements can be ...

    • On the use of WiMAX and Wi-Fi in a VANET to provide in-vehicle connectivity and media distribution 

      Mojela, Lerotholi Solomon (Stellenbosch : Stellenbosch University, 2011-12)
      ENGLISH ABSTRACT: The recent emergence of ubiquitous wireless connectivity and the increasing computational capacity of modern vehicles have triggered immense interest in the possibilities of vehicular connectivity. A ...

    • Onboard image geo-referencing for LEO satellites 

      Van den Dool, Riaan (Stellenbosch : University of Stellenbosch, 2005-12)
      The next generation of small satellites will require significant onboard data processing and information extraction capabilities to keep up with industry demands. The need for value added information products is ...

    • Online system identification for fault tolerant control of unmanned aerial vehicles 

      Appel, Jean-Paul (Stellenbosch : Stellenbosch University, 2013-03)
      ENGLISH ABSTRACT: In this thesis the strategy for performing System Identification on an aircraft is presented. The ultimate aim of this document is to outline the steps required for successful aircraft parameter estimation ...

    • Opportunities for in-line, transistorbased technologies on MV and LV power distribution networks 

      Meyer, Bernard (Stellenbosch : Stellenbosch University, 2000-12)
      ENGLISH ABSTRACT: Once more opportunities exist for innovative technologies to be applied on MV and LV power distribution networks to meet the new challenges set by government through its National Electrification Programme ...

    • Optimal estimation and sensor selection for autonomous landing of a helicopter on a ship deck 

      Irwin, Shaun George (Stellenbosch : Stellenbosch University, 2014-12)
      ENGLISH ABSTRACT: This thesis presents a complete state estimation framework for landing an unmanned helicopter on a ship deck. In order to design and simulate an optimal state estimator, realistic sensor models are ...

    • Optimisation methods applied to compensator placement 

      Burger, I. (Stellenbosch : University of Stellenbosch, 2004-12)
      ENGLISH ABSTRACT: The optimal placement of different types of compensators on electrical networks is a complex task faced by network planners and operations engineers. The successful placement of these devices normally ...

    • Optimisation of a transverse flux linear PM generator using 3D Finite Element Analysis 

      Schutte, Jacques (Stellenbosch : Stellenbosch University, 2011-12)
      ENGLISH ABSTRACT: Several transverse flux and longitudinal flux linear generator topologies exist for freepiston Stirling engine applications. In this thesis the transverse flux permanent magnet linear generators are ...

    • Optimisation of UHF radio SCADA systems for electrical distribution networks 

      Delport, Pierre (Stellenbosch : University of Stellenbosch, 2006-03)
      This thesis presents the results of an investigation to establish methods to improve the performance of area radio based communication systems for Supervisory Control and Data Acquisition (SCADA) systems. The considerable ...