dc.contributor.author |
Oosthuizen, Dirk Johannes Jacobus
|
|
dc.contributor.author |
Craig, Ian Keith
|
|
dc.contributor.author |
Jämsä-Jounela, Sirkka-Liisa
|
|
dc.contributor.author |
Sun, Bei
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|
dc.date.accessioned |
2018-03-14T11:13:07Z |
|
dc.date.issued |
2017-12 |
|
dc.description.abstract |
Despite significant effort in modelling and simulating flotation circuits, comprehensive model based control and optimisation implementations on industrial circuits remain scarce. In this paper, the factors preventing more widespread implementation of model-based control and optimisation applications are investigated by focussing on three aspects. Firstly, the critical variables required in a simplified flotation model are identified. Models that are currently used in control, optimisation and supervisory applications are thereafter analysed to determine to what extent the required variables are modelled. Finally, online instrumentation available to support these models are investigated, also including instrumentation that is still under development and not commonly available in commercial applications. Although models used in control applications tend to focus on subsections of the flotation process, there seem to be a good agreement between the required and modelled variables. Model fitting however often relies on extensive sampling campaigns that will need to be repeated regularly to maintain model accuracy. A number of online measurements of sufficient accuracy are still not available to support these models, compromising the long term reliable use of models in online applications. The fact that flotation processes are in many instances not extensively instrumented, constrains online maintenance and adaption of model based solutions further. |
en_ZA |
dc.description.department |
Electrical, Electronic and Computer Engineering |
en_ZA |
dc.description.embargo |
2018-12-01 |
|
dc.description.librarian |
hj2018 |
en_ZA |
dc.description.sponsorship |
The National Research Foundation of South Africa (IRC grant number 103666). |
en_ZA |
dc.description.uri |
https://www.journals.elsevier.com/ifac-papersonline |
en_ZA |
dc.identifier.citation |
Oosthuizen, D.J., Craig, I.K., Jämsä-Jounela, S.-L. & Sun, B. 2017, 'On the current state of flotation modelling for process control', IFAC-PapersOnLine, vol. 50, no. 2, pp. 19-24. |
en_ZA |
dc.identifier.issn |
1474-6670 |
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dc.identifier.other |
10.1016/j.ifacol.2017.12.004 |
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dc.identifier.uri |
http://hdl.handle.net/2263/64251 |
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dc.language.iso |
en |
en_ZA |
dc.publisher |
Elsevier |
en_ZA |
dc.rights |
© 2017 IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved. Notice : this is the author’s version of a work that was accepted for publication in IFAC papers online. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. A definitive version was subsequently published in IFAC papers online, vol. 50, no. 2, pp. 19-24, 2017. doi : 10.1016/j.ifacol.2017.12.004. |
en_ZA |
dc.subject |
Flotation modelling |
en_ZA |
dc.subject |
Process control |
en_ZA |
dc.subject |
Optimisation |
en_ZA |
dc.subject |
Model based control |
en_ZA |
dc.subject |
Identification (control systems) |
en_ZA |
dc.subject |
Optimisation |
en_ZA |
dc.subject |
On-line measurement |
en_ZA |
dc.subject |
On-line applications |
en_ZA |
dc.subject |
Industrial circuits |
en_ZA |
dc.subject |
Comprehensive model |
en_ZA |
dc.subject |
Commercial applications |
en_ZA |
dc.title |
On the current state of flotation modelling for process control |
en_ZA |
dc.type |
Postprint Article |
en_ZA |