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A universal Chow-Willsky scheme and detectability criteria
Linköping University, The Institute of Technology. Linköping University, Department of Electrical Engineering.
Linköping University, The Institute of Technology. Linköping University, Department of Electrical Engineering.
2000 (English)In: IEEE Transactions on Automatic Control, ISSN 0018-9286, Vol. 45, no 1, 152-156 p.Article in journal (Refereed) Published
Abstract [en]

An important issue in diagnosis research is design methods for residual generation. One method is the Chow-Willsky scheme. Here, the Chow-Willsky scheme is extended as it becomes universal in the sense that, for both discrete and continuous linear systems, it Is shown to be able to generate all possible parity functions. This result means it can also be used to design all possible residual generators. It is shown previous extensions to the Chow-Willsky scheme are not universal, which is the case when dynamics controllable from fault exist, but not from the inputs or disturbances. Also included here are two new conditions on the process for fault detectability and strong fault detectability. A general condition for strong fault detectability has not been presented elsewhere.

Place, publisher, year, edition, pages
2000. Vol. 45, no 1, 152-156 p.
Keyword [en]
fault detectability, fault detection, fault diagnosis, residual generation
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-49831OAI: oai:DiVA.org:liu-49831DiVA: diva2:270727
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2011-01-14

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Nyberg, MattiasNielsen, Lars

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