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Evaluating some Gain Scheduling Strategies in Diagnosis of a Tank System
Linköping University, Department of Electrical Engineering, Vehicular Systems. Linköping University, Faculty of Science & Engineering.
1999 (English)Report (Other academic)
Abstract [en]

In model-based diagnosis the problem of finding all the relations that can be used to detect and isolate different faults, is solved for linear systems, with e.g. “The Minimal Polynomial Basis Method”. However, for nonlinear systems the situation is much more complicated. Here an approach will be taken using the linear method above together with gain scheduling. Linear residual generators are designed at a number of stationary points. The approach is based on using a nominal selector matrix, using null-space redesign dependent on the scheduling variable, and using a proposed optimization method. Two different gain scheduling strategies are applied to form the residual generators between design points, namely nearest neighbour approximation and linear interpolation. The approach is applied to a simple nonlinear system consisting of two coupled water tanks. The simulations show that the performance of the residual generators are good under steady state conditions. It is also shown that linear interpolation has better performance than nearest neighbour approximation, especially during transients.

Place, publisher, year, edition, pages
Linköping: Department of Electrical Engineering , 1999. , p. 51
Series
LiTH-ISY-R, ISSN 1400-3902 ; 2183
Keywords [en]
Linear Residual Generators, Diagnosis
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:liu:diva-139764ISRN: LiTH-ISY-R-2183OAI: oai:DiVA.org:liu-139764DiVA, id: diva2:1131602
Available from: 2017-08-15 Created: 2017-08-15 Last updated: 2017-08-16Bibliographically approved

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Evaluating some Gain Scheduling Strategies in Diagnosis of a Tank System(1000 kB)9 downloads
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Klein, Markus

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf