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Dynamic threshold generators for robust fault detection in linear systems with parameter uncertainty
Luleå tekniska universitet, Institutionen för system- och rymdteknik, Signaler och system.ORCID-id: 0000-0001-8893-4809
2006 (engelsk)Inngår i: Automatica, ISSN 0005-1098, E-ISSN 1873-2836, Vol. 42, nr 7, s. 1095-1106Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The problem of developing robust thresholds for fault detection is addressed. An inequality for the solution of a linear system with uncertain parameters is provided and is shown to be a valuable tool for developing dynamic threshold generators for fault detection. Such threshold generators are desirable for achieving robustness against model uncertainty in combination with sensitivity to small faults. The usefulness of the inequality is illustrated by developing an algorithm for detection of sensor faults in a turbofan engine. The proposed algorithm consists of a state observer with integral action. A dynamic threshold generator is derived under the assumption of parametric uncertainty in the process model. Successful simulations with measurement data show that the algorithm is capable of detecting faults without generating false alarms.

sted, utgiver, år, opplag, sider
2006. Vol. 42, nr 7, s. 1095-1106
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Forskningsprogram
Reglerteknik
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URN: urn:nbn:se:ltu:diva-13499DOI: 10.1016/j.automatica.2006.02.009ISI: 000238829700003Scopus ID: 2-s2.0-33646783329Lokal ID: cb7baa80-ad2b-11db-905c-000ea68e967bOAI: oai:DiVA.org:ltu-13499DiVA, id: diva2:986452
Merknad
Validerad; 2006; 20060924 (ysko)Tilgjengelig fra: 2016-09-29 Laget: 2016-09-29 Sist oppdatert: 2018-07-10bibliografisk kontrollert

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