Verification of Joint Input-State Estimation by In Situ Measurements on a Footbridge

Conference paper (2013)

Authors

K Maes Katholieke Universiteit Leuven
E. Lourens Katholieke Universiteit Leuven, Offshore Engineering - CEG
K van Nimmen Katholieke Universiteit Leuven
P van den Broeck KAHO Sint-Lieven
P Guillaume Vrije Universiteit Brussel
G de Roeck Katholieke Universiteit Leuven
Research Group
Offshore Engineering (CEG) (TU Delft)
Copyright: © 2013 K Maes, E. Lourens, K van Nimmen, P van den Broeck, P Guillaume, G de Roeck, G Lombaert
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Published Date

2013

Language

English

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Faculty

Civil Engineering & Geosciences

Department

Hydraulic Engineering

Research Group

Offshore 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. The noise statistics are estimated, as they are
essential for the joint input-state estimation and can be used to quantify the uncertainty on the estimated forces and system states. The methodology is illustrated using data from an in situ experiment on a footbridge.