Browsing Masters Degrees (Electrical and Electronic Engineering) by Title

Now showing items 558-577 of 578

    • A unified strategy for windup prevention in control systems with multiple saturating actuators 

      Browne, Michael John (Stellenbosch : Stellenbosch University, 2000-12)
      ENGLISH ABSTRACT: A unified method is proposed to treat saturation in both Multi-Input-Multi-Output MIMO and Single-Input-Single-Output controllers. This method offers superior performance over existing MIM 0 anti-saturation ...

    • An unmanned aircraft system for maritime search and rescue 

      Meredith, Andre Paul (Stellenbosch : University of Stellenbosch, 2011-03)
      ENGLISH ABSTRACT: Search and Rescue is an essential service provided by States and Militaries to search for, locate and rescue survivors of accidents and incidents. Civil Search and Rescue utilizes a system of well-trained ...

    • Unsupervised clustering of audio data for acoustic modelling in automatic speech recognition systems 

      Goussard, George Willem (Stellenbosch : University of Stellenbosch, 2011-03)
      ENGLISH ABSTRACT: This thesis presents a system that is designed to replace the manual process of generating a pronunciation dictionary for use in automatic speech recognition. The proposed system has several stages. The ...

    • Upgrading of a radar system to implement a firmware based pulse compressor 

      Rust, Johannes Stephanus Warnich (Stellenbosch : Stellenbosch University, 2007-03)
      ENGLISH ABSTRACT: This project investigates the improvement of an existing radar system by means of currently available technologies and signal processing techniques. Upgrades are aimed to improve the system's speci cations ...

    • USB telephony interface device for speech recognition applications 

      Muller, J. J. (Stellenbosch : University of Stellenbosch, 2005-12)
      Automatic speech recognition (ASR) systems are an attractive means for companies to deliver value added services with which to improve customer satisfaction. Such ASR systems require a telephony interface to connect the ...

    • Using ad hoc wireless networks to enable intelligent transport systems: the design and analysis of the TH(O)RP routing protocol 

      Morrison, Daniel Weich (Stellenbosch : University of Stellenbosch, 2007-03)
      With the rapid advancement of communication technologies and broadband communication, an era is starting to emerge where everything and everyone is always connected, regardless of geography. No other technology has made ...

    • Using Micro-Doppler radar signals for human gait detection 

      Alzogaiby, Adel (Stellenbosch : Stellenbosch University, 2014-04)
      ENGLISH ABSTRACT: This work entails the development and performance analysis of a human gait detection system based on radar micro-Doppler signals. The system consists of a tracking functionality and a target classifier. ...

    • Variable speed scissored pair dual gimbal Control Moment Gyro for nano-satellites 

      Steyn, Douw (Stellenbosch : Stellenbosch University, 2015-12)
      ENGLISH ABSTRACT: The work presented in this thesis describes the development of an attitude control actuator for use in CubeSats. This actuator uses novel Control Moment Gyro technology to perform slew manoeuvres. The ...

    • Video camera design and implementation for telemedicine application 

      Behaimanot, Kibreab Ghebrehiwet (Stellenbosch : Stellenbosch University, 2005-04)
      ENGLISH ABSTRACT: Primary health care telemedicine services require the acquisition and transmission of patient data including high quality still and video images via telecommunication networks. The objective of this ...

    • Visual servo control for a human-following robot 

      Burke, Michael Glen (Stellenbosch : University of Stellenbosch, 2011-03)
      ENGLISH ABSTRACT: This thesis presents work completed on the design of control and vision components for use in a monocular vision-based human-following robot. The use of vision in a controller feedback loop is referred ...

    • Voltage control of medium to high power three-phase inverter supply systems 

      Jacobs, D. M. (Danver Maxwill) (Stellenbosch : Stellenbosch University, 2001-12)
      ENGLISH ABSTRACT: In this thesis a new voltage control method is developed for a three-phase inverter supply system. The inverter supply system consist of a Permanent Magnet Generator, a three-phase rectifier, a three-phase ...

    • Volumetric data throughput optimisation by dynamic FEC bearing frame length adaptation 

      Christelis, Christian (Stellenbosch : University of Stellenbosch, 2010-03)
      ENGLISH ABSTRACT: The telecommunications link between a LEO satellite and a rural ground station with a non-tracking antenna, has a strongly varying link quality and a short communications window. The satellite acts as ...

    • Waveguide antenna feed for the Square Kilometre Array 

      Schoeman, Karla (Stellenbosch : University of Stellenbosch, 2011-03)
      ENGLISH ABSTRACT: The aim of this thesis is to investigate the suitability of TEM (Transverse Electromagnetic) horn antennas for use as feed structures for the Square Kilometre Array (SKA) radio telescope, in particular with ...

    • Wavelet-based speech enhancement : a statistical approach 

      Harmse, Wynand (Stellenbosch : University of Stellenbosch, 2004-12)
      ENGLISH ABSTRACT: Speech enhancement is the process of removing background noise from speech signals. The equivalent process for images is known as image denoising. While the Fourier transform is widely used for speech ...

    • Wide band, low-noise amplifiers for the mid-range SKA 

      Botes, Dewald Alewyn (Stellenbosch : Stellenbosch University, 2015-03)
      ENGLISH ABSTRACT: This thesis presents the design, construction and measurement of two wide-band LNA’s for the SKA-Mid range (350-1200 MHz). The first wide-band LNA involves the investigation of classic low noise amplifier ...

    • Wide-band modelling of an air-core power transformer winding 

      Van Jaarsveld, Barend Jacobus (Stellenbosch : Stellenbosch University, 2013-12)
      ENGLISH ABSTRACT: The objective of this project is to develop an electromagnetic model that can be used to accurately calculate the voltage distribution in a transformer winding structure when excited with standard impulse ...

    • Wideband coaxial cable transfer impedance for Karroo Array Telescope 

      Andriambeloson, Joely Andrianina (Stellenbosch : Stellenbosch University, 2011-12)
      ENGLISH ABSTRACT: Through the Karoo Array Telescope, and its extension MeerKAT, South Africa is demonstrating its capabilities to host the most powerful radio telescope ever, the Square Kilometre Array (SKA). This new ...

    • A wideband monopole antenna design 

      Lourens, Jako (Stellenbosch : Stellenbosch University, 2013-03)
      ENGLISH ABSTRACT: The successful operation of a man-pack VHF jamming system requires a compact and efficient antenna operating over a wide bandwidth. The design of such an antenna is the focus of this thesis. The antenna ...

    • A wideband signal conditioning system for high voltage measurements using a transconductance topology 

      Agjee, F. M. D. E. (Faatima, Moosa, Dawood, Ebrahim) (Stellenbosch : Stellenbosch University, 2000-03)
      ENGLISH ABSTRACT: Recent research has shown that standard substation capacitive voltage transformers (CVTs) and current transformers (CTs) can be used for the measurement of wideband high voltage phenomena by employing ...

    • Wind-electric pump system design 

      Lemmer, Edward Charles (Stellenbosch : University of Stellenbosch, 2009-03)
      The aim of this study is to analyse the operation of a wind-electric pumping system (WEPS) as an alternative to conventional mechanical wind pumps for application in stand-alone water-pumping schemes. The steady-state as ...