Browsing Faculty of Engineering by Title

Now showing items 356-375 of 1611

  • Design of a reluctance synchronous machine for an electric vehicle with a multi speed gearbox 

    Vorster, Christiaan Willem (Stellenbosch : Stellenbosch University, 2014-12)
    ENGLISH ABSTRACT: Conventional electrical vehicles (EVs) favour mostly permanent magnet machines with single speed gearboxes. This is understandable, the PM machine has a high power density making the electrical machine ...

  • Design of a Self Regulated and Protected Electrification Transformer 

    Beckers, Peter C. (Stellenbosch : University of Stellenbosch, 2007-03)
    Electrification of rural areas is one of the biggest challenges faced by ESKOM and methods are required to extend medium voltage distribution lines to these often remote areas. As loads increase due to line-extension, ...

  • The design of a single rotor axial flow fan for a cooling tower application 

    Bruneau, Phillippe Roger Paul; Von Backstrom, T. W. (Stellenbosch : University of Stellenbosch, 1994-12)
    ENGLISH ABSTRACT: A design methodology for low pressure rise, rotor only, ducted axial flow fans is formulated, implemented and validated using the operating point specifications of a 1/6th scale model fan as a reference. ...

  • Design of a single-sided axial flux PM in-wheel electric vehicle machine with non-overlap stator windings 

    Kierstead, Harold Junior (Stellenbosch : University of Stellenbosch, 2009-12)
    ENGLISH ABSTRACT: With the current worldwide energy problems electric vehicles are set to replace conventional combustion engine vehicles. Electric vehicles with gearless in-wheel mounted brushless permanent magnet motors ...

  • The design of a telemetry system for Grumeti reserves 

    Labuschagne, Adriaan S. (Stellenbosch : University of Stellenbosch, 2006-03)
    This thesis covers the design and development of a radio telemetry system to assist in management of the Grumeti reserves. This was accomplished through the integration of a digital data transmission system into the ...

  • The design of a two-element correlation interferometer operating at L-band 

    Jansen van Rensburg, Juan-Pierre (Stellenbosch : Stellenbosch University, 2012-12)
    ENGLISH ABSTRACT: This thesis describes the design and construction of a two-element digital correlation interferometer operating at 1.42 GHz. This instrument consists of two 92cm off set-parabolic reflectors arranged ...

  • Design of an ad hoc wireless network for wildlife telemetry tracking in the Cederberg 

    Brits, Johan George (Stellenbosch : University of Stellenbosch, 2011-03)
    ENGLISH ABSTRACT: This thesis involves research on wildlife telemetry tracking for the Cape Leopard Trust (CLT). The CLT needed a network to transfer GPS data and single frame photos from remote locations in the Cederberg ...

  • Design of an aerodynamic attitude control system for a CubeSat 

    Auret, Jacoba (Stellenbosch : Stellenbosch University, 2012-03)
    ENGLISH ABSTRACT: The Cape Peninsula University of Technology, in collaboration with Stellenbosch University, is developing a 3-unit CubeSat for a low earth polar orbit. The two main payloads are a camera and a radio ...

  • The design of an analogue class-D audio amplifier using Z-domain methods 

    Kemp, Pieter Stephanus (Stellenbosch : Stellenbosch University, 2012-03)
    ENGLISH ABSTRACT: The class-D audio power amplifier has found widespread use in both the consumer and professional audio industry for one reason: efficiency. A higher efficiency leads to a smaller and cheaper design, ...

  • The design of an FM-CW proximity radar 

    Kellerman, Robert A. (Stellenbosch : Stellenbosch University, 2004-04)
    ENGLISH ABSTRACT: The development of a small, cost effective short range FM-CW radar as well as the design and optimization of a double helix antenna is discussed. The FM-CW radar operates at Sband (2450 - 2550 MHz) and ...

  • Design of an impedance guided intra-arterial catheter 

    Schwartz, Paul (Stellenbosch : Stellenbosch University, 2013-03)
    ENGLISH ABSTRACT: This thesis entails the stages of the development of an arterial catheter capable of being guided by the impedance of human tissue. Such a device would be desired in cases where it is not possible to ...

  • The design of an optimal, dynamic, multi-hop telemetry network 

    Nicholson, Gareth Andrew (Stellenbosch : University of Stellenbosch, 2006-12)
    The basic concepts of wide band mobile ad hoc networking are used in this thesis to extend the functionality of a typical low-speed telemetry system. Although most efforts related to wireless networking are driven by the ...

  • Design of an RF ion thruster 

    Botha, Johannes Rudolf (Stellenbosch : Stellenbosch University, 2014-04)
    ENGLISH ABSTRACT: Recent years have seen a decline in the rate of space exploration due to the inefficiency of chemical rockets. Therefore alternative fuel efficient propulsion methods are being sought to enable cost ...

  • Design of an Underwater Object Detection and Location System using Wide-Beam SONAR 

    Du Pisani, Renaldo Murray (Stellenbosch : Stellenbosch University, 2014-04)
    ENGLISH ABSTRACT: This thesis describes the second project relating to the development of a SONAR (SOund Navigation And Ranging) object detection and collision avoidance system for use on an AUV (Autonomous Underwater ...

  • Design of equal division microwave power dividers 

    Strydom, M. L. (Stellenbosch : Stellenbosch University, 2003-12)
    ENGLISH ABSTRACT: Equal division microwave power dividers are investigated in this study. A wideband Wilkinson power divider and a wideband directional coupler with a centre frequency of 10 GHz were built. The design ...

  • Design of medium pressure nozzles for cooling towers 

    Thacker, John Edward (Stellenbosch : Stellenbosch University, 1997-05)
    ENGLISH ABSTRACT: This project concerns the investigation of parameters controlling the behaviour of full-cone spray nozzles of the type used in cooling towers. In the present study large medium pressure hollow and full ...

  • Design of tapered and straight stator pole switched reluctance machines 

    Sitsha, Lizo M. M. (Stellenbosch : Stellenbosch University, 2000-04)
    ENGLISH ABSTRACT: This thesis deals with the design and optimisation of medium power traction switched reluctance machines with tapered and straight stator poles. Only the prototype of the tapered stator pole machine ...

  • Design of the dual-shaped triple layer pillbox antenna 

    Baard, Charl Wynand (Stellenbosch : Stellenbosch University, 2013-03)
    ENGLISH ABSTRACT: The triple layer pillbox antenna is an antenna topology well suited for use as a stackable "plank" element in radar applications. Its suitability arises from the folding which makes it compact, and from ...

  • Design of tissue leaflets for a percutaneous aortic valve 

    Smuts, Adriaan Nicolaas (Stellenbosch : University of Stellenbosch, 2009-03)
    In this project the shape and attachment method of tissue leaflets for a percutaneous aortic valve is designed and tested as a first prototype. Bovine and kangaroo pericardium was tested and compared with natural human ...

  • Design Procedures for Series and Parallel Feedback Microwave DROs 

    Alaslami, Nauwaf (Stellenbosch : University of Stellenbosch, 2007-12)
    Clear procedures for designing dielectric resonator oscillators (DROs) are presented in this thesis, including built examples to validate these design procedures. Both series and parallel feedback DROs are discussed and ...