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

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Abstract:

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.

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Periodical:

Key Engineering Materials (Volumes 321-323)

Pages:

273-277

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.321-323.273

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Online since:

October 2006

Authors:

Soon Jung Kwon, Hae Sung Lee, Soo Bong Shin

Keywords:

Optimal Accelerometer Location, Structural Health Monitoring (SHM), System Identification

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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References

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