Research Article
Dec 1982
Identification of Linear Structural Dynamic Systems
Publication: Journal of the Engineering Mechanics Division
Volume 108, Issue 6
Abstract
This paper studies methods of parameter estimation for linear multi-degree-of-freedom structural dynamic systems, based on observed records of the external forces and the structural responses. The auto-regressive and moving-average (ARMA) model is used for this purpose. It is found that the ARMA model is a convenient model representing linear multi-degree-of-freedom structural dynamic systems and that the model is highly compatible with the instrumental variable method and the maximum likelihood method of identification. In order to check the accuracy of the estimation methods, analytical simulation studies are performed on the basis of simulated data dealing with the aerodynamic coefficient matrices that appear in the equations of motion of a two-dimensional model of a suspension bridge. Then, these methods are applied to the same equations to identify the coefficient matrices using the field measurement data yielding good estimates of the system parameters even under large output noise conditions.
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Published In
Journal of the Engineering Mechanics Division
Volume 108 • Issue 6 • December 1982
Pages: 1371 - 1390
Copyright
© 1982 American Society of Civil Engineers.
History
Published in print: Dec 1982
Published online: Feb 3, 2021
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Authors
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Masanobu Shinozuka, M.ASCE
Renwick Prof. of Civ. Engrg., Columbia Univ., New York, N.Y. 10027
Chung-Bang Yun
Research Engr., Amoco Production Co., Tulsa, Okla.
Hiroyuki Imai
Research Assoc., Kyoto Univ., Kyoto, Japan
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.