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Influence of correlation estimation methods on damping estimates
University of Southern Denmark, Denmark.
University of Southern Denmark, Denmark.ORCID iD: 0000-0003-2025-7842
2013 (English)In: Proceedings of the 5th International Operational Modal Analysis Conference (IOMAC), Guimarães, Portugal, May 13 – 15, 2013, 2013Conference paper, Published paper (Refereed)
Abstract [en]

In this paper we compare two commonly used methods for estimation of correlation functions, the periodogram (or correlogram) method and the Welch’s method, and show that they are statistically equal. The random error in the correlation estimate is then illustrated and the effect it has on damping estimates is demonstrated by using Prony’s method on data for a simulated single-degree-of-freedom system. It is demonstrated that adding more correlation lag values does not necessarily improve the damping estimate.

Place, publisher, year, edition, pages
2013.
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:lnu:diva-56966OAI: oai:DiVA.org:lnu-56966DiVA: diva2:1039881
Conference
5th International Operational Modal Analysis Conference (IOMAC), Guimarães, Portugal, May 13–15, 2013
Available from: 2016-10-25 Created: 2016-09-28 Last updated: 2016-10-25Bibliographically approved

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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
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  • Other locale
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Output format
  • html
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