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Now showing items 11-20 of 345
Efficiency analysis of an induction motor with direct torque and flux control at a hot rolling mill
(Energy Research Centre, University of Cape Town, 2015)
This paper presents an efficiency analysis of an
induction motor with direct torque and flux control
at a hot rolling mill in South Africa. Two scenarios
were evaluated: 1) where the induction motor was
controlled at ...
Ontology goes postmodern in ICT
(ACM Press, 2010)
This paper investigates the move from philosophical ontology to information systems ontologies. Ontology has traditionally been (and still is) a philosophical discipline that studies the nature of existence. In a certain ...
Backup bearing modelling for turbo machines with high axial and radial loads
(s.n, 2014)
The use of active magnetic bearings (AMBs) in turbo
machines is an active research topic and the implementation in
industrial applications is becoming commonplace. This is
especially true when investigating the backup ...
Context-dependent modelling of English vowels in Sepedi code-switched speech
(Pattern recognition association of South Africa (PRASA), 2012)
When modelling code-switched speech (utterances that contain a mixture of languages), the embedded language often contains phones not found in the matrix language. These are typically dealt with by either extending the ...
Delevitation modelling of an active magnetic bearing supported rotor
(s.nCurran Associates, 2010)
For active magnetic bearings (AMBs) to be used with confidence in industrial applications, the safe
failure of the AMB system should be guaranteed. The exact behaviour of the rotor on the backup bearings (BBs)
is relatively ...
Evaluation of bio-char based products as hydrotreating catalysts for the production of renewable fuel
(2017)
Increasing demand for alternative fuel from fossil fuel exists which has led to the development of new technologies for the production of bio-fuels. One such technology involves the hydrotreatment of vegetable oils such ...
Ontwerp van ’n transmissielyn-monteringsoplossing vir ’n onbemande vier-rotor helikopter
(AOSIS, 2014)
A need
exists for a transmission line monitoring system for use by Eskom to inspect transmission
lines. A solution which uses a single board computer, visual and infrared cameras and a
GPS module is described. Real-time ...
A generalized additive neural network application in information security
(Tadbir Operational Research Group, 2014)
Traditionally spam has been considered as an inconvenience requiring workers to sift through and delete large numbers of e-mail messages per day. However, new developments and the Internet have dramatically transformed the ...
Design of an intelligent controller for a renewable energy efficient bulk storage tank
(2015)
The national electricity supplier in South Africa is experiencing difficulty in providing the
required electricity, due to compliance with environmental regulations and the continuous price
increase of commercial fuels. ...
The characterization of the severity of rotor delevitation events: a parametric study
(s.n, 2012)
Active magnetic bearing (AMB) failure and the ensuing rotor behavior is a very important
aspect of AMB safety. A model for this rotor behavior was developed and was used to
characterize the severity of rotor delevitation ...