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Identification of performance limitations in control
KTH, School of Electrical Engineering (EES), Automatic Control.ORCID iD: 0000-0002-9368-3079
KTH, School of Technology and Health (STH), Medical Engineering, Medical sensors, signals and systems.
2001 (English)In: 2001 European Control Conference, ECC 2001, IEEE conference proceedings, 2001, 1446-1451 p.Conference paper (Refereed)Text
Abstract [en]

Non-minimum phase zeros and poles of a process put upper and lower constraints on the bandwidth of a closed loop system. It is thus of great interest to be able to identify these quantities. In this contribution it is shown that non-minimum phase zeros and unstable poles can be identified using high order models without the standard o(n) (n is the model order) variance penalty for over modeling. An asymptotic, in the model order and the number of data, expression for the variance of non-minimum phase zeros is derived. This result shows that the problem of determining the performance limits of a system from experimental data is considerably easier than identifying the complete system. As a direct application of this an optimal experiment design problem for identification of performance limits is posed and solved.

Place, publisher, year, edition, pages
IEEE conference proceedings, 2001. 1446-1451 p.
Keyword [en]
experiment design, performance limitations, poles and zeros, System identification, Closed loop systems, Identification (control systems), Complete system, High order model, Non-minimum phase zero, Number of datum, Optimal experiment design, Performance limits, Poles
National Category
Control Engineering
Identifiers
URN: urn:nbn:se:kth:diva-181628ScopusID: 2-s2.0-84947466325ISBN: 9783952417362OAI: oai:DiVA.org:kth-181628DiVA: diva2:909017
Conference
6th European Control Conference, ECC 2001, 4 September 2001 through 7 September 2001
Note

QC 20160304

Available from: 2016-03-04 Created: 2016-02-02 Last updated: 2016-03-04Bibliographically approved

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Hjalmarsson, HåkanLindqvist, Kristian
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ReferencesLink to record
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