Identification of multiple localized forces on a footbridge

Conference paper (2013)
Department
Hydraulic Engineering (CEG) (TU Delft)
Copyright: © 2013 The Author(s)
State estimation Force identification Noise statistics Uncertainty interval
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Published Date

13-05-2013

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Source:

IOMAC 2013: 5th International Operational Modal Analysis Conference, Guimaraes, Portugal, 13-15 May 2013

Faculty

Civil Engineering and Geosciences

Department

Hydraulic Engineering

Abstract

An existing joint input-state estimation algorithm is extended for applications in structural dynamics. The estimation of the input and the system states is performed in a minimum-variance unbiased way, based on a limited number of response measurements and a system model. An additional method is proposed to identify the noise statistics, which are needed for the joint input-state estimation procedure and which can be used to quantify the uncertainty on the estimated forces and system states. The proposed methodology is illustrated using data from an in situ experiment on a footbridge.

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