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Optimal sensor locations for nonparametric identification of viscoelastic materials
Division of Systems and Control, Department of Information Technology, Uppsala University.
Division of Solid Mechanics, Department of Engineering Sciences, Ångström Laboratory, Uppsala University.
Karlstad University, Faculty of Technology and Science, Department of Physics and Electrical Engineering.
Division of Systems and Control, Department of Information Technology, Uppsala University.
2008 (English)In: Automatica, ISSN 0005-1098, Vol. 44, no 1, 28-38 p.Article in journal (Refereed) Published
Abstract [en]

The problem of optimal sensor locations in nonparametric identification of viscoelastic materials is considered. Sensor locations have previously been assigned in an ad hoc manner, resulting in a sub-optimal experiment design with a comparatively high variance of the estimates. Different scalar criteria of the covariance matrix, connected to A- and D-optimal experiment design, are considered and evaluated. The results indicate that the accuracy of the estimates can be greatly improved by the use of optimally placed sensors. The theoretical study has been verified by experiments. The presented results can be used to design experiments with improved accuracy of the estimates.

Place, publisher, year, edition, pages
2008. Vol. 44, no 1, 28-38 p.
Keyword [en]
Experiment design, Nonparametric identification, Viscoelastic materials
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Electrical Engineering
Identifiers
URN: urn:nbn:se:kau:diva-22139DOI: 10.1016/j.automatica.2007.04.007OAI: oai:DiVA.org:kau-22139DiVA: diva2:595815
Available from: 2013-01-21 Created: 2013-01-21 Last updated: 2013-11-07Bibliographically approved

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Mossberg, Magnus
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