Title: Modelling of sprayer boom dynamics by means of maximum likelihood identification techniques, part 2: Sensitivity-based mode shape normalisation
Authors: Parloo, E ×
Guillaume, P
Anthonis, Jan
Heylen, Edward
Swevers, Jan #
Issue Date: Jul-2003
Publisher: Academic press inc elsevier science
Series Title: Biosystems engineering vol:85 issue:3 pages:291-298
Abstract: Output-only modal analysis allows the estimation of modal models for structures in their real in-operation conditions. One of the main drawbacks of this approach is that a part of the modal model can no longer be estimated. As a result, the operational mode shape estimates remain incorrectly scaled, dependent on the unknown level of ambient excitation. This incompleteness somewhat restricts the applicability of in-operation modal models. No techniques were previously available for the normalisation of operational mode shapes purely based on experimental output-only data. Recently, a sensitivity-based normalisation approach, that can be used for output-only data, was proposed and successfully tested on simple laboratory structures. The principle behind the normalisation technique is the interpretation of the shifts in modal parameters induced by well-known structural modifications. In this contribution, the sensitivity-based normalisation approach was experimentally validated on a basis of vibration experiments performed on a tractor-sprayer combination. (C) 2003 Silsoe Research Institute. All rights reserved Published by Elsevier Science Ltd.
ISSN: 1537-5110
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Production Engineering, Machine Design and Automation (PMA) Section
Division of Mechatronics, Biostatistics and Sensors (MeBioS)
× corresponding author
# (joint) last author

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