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Evaluation of modern large-vocabulary speech recognition techniques and their implementation
(Stellenbosch : University of Stellenbosch, 2009-03)
In this thesis we studied large-vocabulary continuous speech recognition.
We considered the components necessary to realise a large-vocabulary speech
recogniser and how systems such as Sphinx and HTK solved the ...
Insulator aging tests with HVAC and HVDC excitation using the tracking wheel tester
(Stellenbosch : University of Stellenbosch, 2009-12)
ENGLISH ABSTRACT: Limited research results are available on the aging impacts of surface discharges for High Voltage Direct Current (HVDC) excitation on practical insulators using the Tracking Wheel Tester (TWT) methodology. ...
Flight control system for a variable stability blended-wing-body unmanned aerial vehicle
(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 ...
Design of a single-sided axial flux PM in-wheel electric vehicle machine with non-overlap stator windings
(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 ...
Design of a haptic controller for excavators
(Stellenbosch : University of Stellenbosch, 2009-03)
The input orientation of the excavators in use today usually comprises
two joysticks that control the actuator links individually. In order to perform
an excavation task, several different combinations of joystick ...
Modelling the EM properties of dipole reflections with application to uniform chaff clouds
(Stellenbosch : University of Stellenbosch, 2009-12)
ENGLISH ABSTRACT: The origin of chaff dates as far back as WWII, acting as a passive EM countermeasure it was used to confuse enemy radar systems and is still in use today. The purpose of this study is, firstly, to build ...
A fixed-point DSP architecture for software-defined radio
(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 ...
An LDPC error control strategy for low earth orbit satellite communication link applications
(Stellenbosch : University of Stellenbosch, 2009-12)
ENGLISH ABSTRACT: Low earth orbit (LEO) satellite communication presents a unique environment
which inherently di ers from most other communication channels.
Due to the varying orbital patterns of LEO satellites the link ...
Fast accurate diphone-based phoneme recognition
(Stellenbosch : University of Stellenbosch, 2009-03)
Statistical speech recognition systems typically utilise a set of statistical models of subword
units based on the set of phonemes in a target language. However, in continuous
speech it is important to consider co-articulation ...
Autonomous docking for a satellite pair using monocular vision
(Stellenbosch : University of Stellenbosch, 2009-03)
Autonomous rendezvouz and docking is seen as an enabling technology. It allows, among
others, the construction of larger space platforms in-orbit and also provides a means for the
in-orbit servicing of space vehicles.
In ...