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Identification of processes in closed loop - identifiability and accuracy aspects
Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Mathematics and Computer Science, Department of Information Technology. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Mathematics and Computer Science, Department of Information Technology, Automatic control. AUTOMATIC CONTROL.
1977 (English)In: Automatica, Vol. 13, 59-75 p.Article in journal (Refereed) Published
Abstract [en]

It is often necessary in practice to perform identification experiments on systems operating in closed loop. There has been some confusion about the possibilities of successful identification in such cases, evidently due to the fact that certain common methods then fail. A rapidly increasing literature on the problem is briefly surveyed in this paper, and an overview of a particular approach is given. It is shown that prediction error identification methods, applied in a direct fashion will given correct estimates in a number of feedback cases. Furthermore, the accuracy is not necessarily worse in the presence of feedback; in fact optimal inputs may very well require feedback terms. Some practical applications are also described.

Place, publisher, year, edition, pages
1977. Vol. 13, 59-75 p.
Identifiers
URN: urn:nbn:se:uu:diva-24870OAI: oai:DiVA.org:uu-24870DiVA: diva2:52644
Note
Survey paper.Available from: 2007-02-08 Created: 2007-02-08 Last updated: 2011-01-16

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Söderström, Torsten

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