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Model-based supervision of valves in a flotation process
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Signals and Systems.
2003 (English)In: 42nd IEEE International Conference on Decision and Control, Piscataway, NJ: IEEE Communications Society, 2003, 744-749 p.Conference paper (Refereed)
Abstract [en]

An observer based approach for detecting clogging in valves in flotation processes is investigated. Integral action and linear feedback applied to a nonlinear process model constitutes the observer for which local stability is shown. The integral terms give estimates of the clogging in the valves of the process and this estimate is compared to a constant threshold. Experiments on real data from Boliden's flotation series at the Boliden Area Concentrator, Sweden, show no false alarm during any of the two working conditions, PI control and LQ control. It is also shown that cloggings, simulated by manipulating measurement data, are promptly detected. The observer based fault detection algorithm is compared to an algorithm based on parameter estimation and advantages of the two approaches are highlighted.

Place, publisher, year, edition, pages
Piscataway, NJ: IEEE Communications Society, 2003. 744-749 p.
Research subject
Control Engineering
URN: urn:nbn:se:ltu:diva-32180DOI: 10.1109/CDC.2003.1272654Local ID: 69660620-799a-11db-8824-000ea68e967bISBN: 0-7803-7924-1OAI: diva2:1005414
IEEE Conference on Decision and Control : 09/12/2003 - 12/12/2003
Godkänd; 2003; 20060924 (ysko)Available from: 2016-09-30 Created: 2016-09-30Bibliographically approved

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