Optimal Accelerometer Locations for Structural Health Monitoring Using Time-Domain System Identification

Abstract:

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The paper presents two algorithms for determining optimal accelerometer locations for structural health monitoring when structural condition is assessed by a system identification scheme in time-domain. The accelerometer locations are determined by ranking the components of an effective independent distribution vector computed from a Fisher information matrix. One of the proposed algorithms formulates a Fisher information matrix by multiplying acceleration matrix with its transpose and the other as a Gauss-Newton Hessian matrix composed of acceleration sensitivities with respect to structural parameters. Since the structural parameters cannot be known exactly in an actual application, a statistical approach is proposed by setting an error bound between the actual and the baseline values. To examine the algorithm, simulation studies have been carried out on a two-span planar truss. The results using locations selected by the two algorithms were compared.

Info:

Periodical:

Key Engineering Materials (Volumes 321-323)

Edited by:

Seung-Seok Lee, Joon Hyun Lee, Ik Keun Park, Sung-Jin Song, Man Yong Choi

Pages:

273-277

DOI:

10.4028/www.scientific.net/KEM.321-323.273

Citation:

S. J. Kwon, H. S. Lee, S. B. Shin, "Optimal Accelerometer Locations for Structural Health Monitoring Using Time-Domain System Identification", Key Engineering Materials, Vols. 321-323, pp. 273-277, 2006

Online since:

October 2006

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Price:

$35.00

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