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Identification for control: L-2 and L-infinity methods
KTH, Superseded Departments, Signals, Sensors and Systems. (Reglerteknik)ORCID iD: 0000-0002-9368-3079
KTH, Superseded Departments, Signals, Sensors and Systems. (Reglerteknik)
2001 (English)In: PROCEEDINGS OF THE 40TH IEEE CONFERENCE ON DECISION AND CONTROL, 2001, 2701-2706 p.Conference paper, Published paper (Refereed)
Abstract [en]

Identification of restricted complexity models for linear time-invariant systems is considered. A method, with ties to model reduction and the extended instrumental variable method, which uses a cost function based on cross-correlations between the prediction error and some auxiliary variable such as the input is presented. In open loop and under linear feedback, this method is able to asymptotically approximate the underlying system in L-2 or L-infinity norm without an explicit noise model under noisy conditions. Arbitrary frequency weighting, also depending on the true frequency function, can be used. The method is applied to identification of models suited for control design. It is shown that some model free methods can be fit into this framework. It is also pointed out that closed loop stability is not taken into account in the bias tuning due to the fact that L-norms are used.

Place, publisher, year, edition, pages
2001. 2701-2706 p.
Series
IEEE CONFERENCE ON DECISION AND CONTROL - PROCEEDINGS, ISSN 0191-2216
National Category
Control Engineering
Research subject
SRA - ICT
Identifiers
URN: urn:nbn:se:kth:diva-26595DOI: 10.1109/.2001.980679ISI: 000178362200493ISBN: 0-7803-7061-9 (print)OAI: oai:DiVA.org:kth-26595DiVA: diva2:376370
Conference
40th IEEE Conference on Decision and Control ORLANDO, FL, DEC 04-07, 2001
Funder
Swedish Research Council, 621-1999-179
Note
QC 20101210 NR 20140804Available from: 2010-12-10 Created: 2010-11-25 Last updated: 2012-01-13Bibliographically approved

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Hjalmarsson, Håkan

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
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  • Other locale
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Output format
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