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Robust time-varying thresholds for supervision of valves in a flotation process
Luleå tekniska universitet, Institutionen för system- och rymdteknik, Signaler och system.ORCID-id: 0000-0001-8893-4809
2004 (engelsk)Inngår i: 2004 43rd IEEE Conference on Decision and Control: Nassau, Bahamas, 14 - 17 December 2004, Piscataway, NJ: IEEE Communications Society, 2004, s. 4305-4310Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

Robust thresholds for observer-based residuals are developed for the purpose of detecting clogging in the valves of a flotation process. The observer in the residual generator is a linear model of the flotation process extended with integrators and corrected with a linear feedback term. The integral states in the observer constitute the residual. Contribution to the residual comes not only from the faults but also from uncertainties in measurements, estimates and working point To avoid false alarms generated by these uncertainties, robust time-varying thresholds depending on the uncertainties are derived. Experiments on a froth flotation process with four cascade coupled tanks are carried out successfully. The data was provided by Boliden Area Concentrator in Boliden, Sweden.

sted, utgiver, år, opplag, sider
Piscataway, NJ: IEEE Communications Society, 2004. s. 4305-4310
HSV kategori
Forskningsprogram
Reglerteknik
Identifikatorer
URN: urn:nbn:se:ltu:diva-33009DOI: 10.1109/CDC.2004.1429428ISI: 000226745603159Lokal ID: 7b9a1e20-5146-11db-9592-000ea68e967bISBN: 0-7803-8682-5 (tryckt)OAI: oai:DiVA.org:ltu-33009DiVA, id: diva2:1006244
Konferanse
IEEE Conference on Decision and Control : 14/12/2004 - 17/12/2004
Merknad
Godkänd; 2004; 20060925 (ysko)Tilgjengelig fra: 2016-09-30 Laget: 2016-09-30 Sist oppdatert: 2018-07-10bibliografisk kontrollert

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