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Verification of Experimental Component Mode Synthesis in the Sierra Analysis Framework Read chapter Read first chapter

2016 | OriginalPaper | Chapter

4. Force Identification Based on Subspace Identification Algorithms and Homotopy Method

Authors : Zhenguo Zhang, Ph.D., Xiuchang Huang, Ph.D., Zhiyi Zhang, Hongxing Hua

Published in: Dynamics of Coupled Structures, Volume 4

Publisher: Springer International Publishing

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Abstract

This paper addresses an inverse problem to determine dynamic forces acting on a structure from response data. Data-driven subspace algorithms and the linear regression are used to facilitate the estimation of the state sequences and system parameters. The force identification model is then reasonably established on the basis of the estimated system model. A weighted algorithm based on the homotopy analysis method is employed to discretize the well-known ill-posed problems. Moreover, a criterion based on L-curves is adopted for choosing the level of regularization. Finally, laboratory experiments are presented to demonstrate robustness and effectiveness of the proposed solution technique.

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Metadata
Title
Force Identification Based on Subspace Identification Algorithms and Homotopy Method
Authors
Zhenguo Zhang, Ph.D.
Xiuchang Huang, Ph.D.
Zhiyi Zhang
Hongxing Hua
Copyright Year
2016
Book
Dynamics of Coupled Structures, Volume 4

Print ISBN: 978-3-319-29762-0

Electronic ISBN: 978-3-319-29763-7

Copyright Year: 2016

DOI
https://doi.org/10.1007/978-3-319-29763-7_4

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