Parameter study of statistics of modal parameter estimates using automated operational modal analysis

Silas S. Christensen*, Anders Brandt

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Abstrakt

For any modal parameter estimation (MPE) method, there are a few control inputs that can have an impact on the modal parameter estimates. These control inputs are typically involving parameters like the maximum model order and how many time values or frequency lines that should be included in the MPE. In this paper, a comprehensive study on the influence of these parameters is conducted using the multi-reference Ibrahim Time Domain algorithm (similar to the cov-SSI method). Data from a laboratory Plexiglas plate are investigated, and an automated Operational Modal Analysis (OMA) algorithm is used to systematically select physical poles. The effect of each of the various control parameters are discussed in the paper.

OriginalsprogEngelsk
TitelDynamics of Civil Structures, Volume 2 - Proceedings of the 37th IMAC, A Conference and Exposition on Structural Dynamics, 2019
RedaktørerShamim Pakzad
ForlagSpringer
Publikationsdato2020
Sider243-254
ISBN (Trykt)978-3-030-12114-3
ISBN (Elektronisk)978-3-030-12115-0
DOI
StatusUdgivet - 2020
Begivenhed37th IMAC, A Conference and Exposition on Structural Dynamics, 2019 - Orlando, USA
Varighed: 28. jan. 201931. jan. 2019

Konference

Konference37th IMAC, A Conference and Exposition on Structural Dynamics, 2019
LandUSA
ByOrlando
Periode28/01/201931/01/2019
NavnConference Proceedings of the Society for Experimental Mechanics Series
ISSN2191-5644

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Citationsformater

Christensen, S. S., & Brandt, A. (2020). Parameter study of statistics of modal parameter estimates using automated operational modal analysis. I S. Pakzad (red.), Dynamics of Civil Structures, Volume 2 - Proceedings of the 37th IMAC, A Conference and Exposition on Structural Dynamics, 2019 (s. 243-254). Springer. Conference Proceedings of the Society for Experimental Mechanics Series https://doi.org/10.1007/978-3-030-12115-0_34