The Comparison Investigation of OMA Methods on Time Domain

Dong Di Chen; Luo Wu; Jia Wei Xiang

doi:10.4028/www.scientific.net/AMR.422.443

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 422The Comparison Investigation of OMA Methods on...

The Comparison Investigation of OMA Methods on Time Domain

Abstract:

Operational modal analysis (OMA) is an effective method to identify structural modal parameters from response signal under operational condition. Aiming at the evaluation of different time domain OMA methods in structural modal parameters identification, both numerical simulation and experimental investigation of cantilever beam have been applied to different methods, such as Sparse Time Domain (STD) method, Least Square Complex Exponential (LSCE) method and Eigensystem Realization Algorithm (ERA), etc. The comparison results indicated that ERA is the best one, LSCE method follows and STD method is worst.

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Periodical:

Advanced Materials Research (Volume 422)

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443-447

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.422.443

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Online since:

December 2011

Authors:

Dong Di Chen, Luo Wu, Jia Wei Xiang

Keywords:

Cantilever Beam, Comparsion Investigation, Modal Parameter Identification, OMA

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