On Gain Design in Virtual Output Feedback for Model Updating

Martin Dalgaard Ulriksen, Dionisio Bernal

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Abstrakt

The set of equations to be solved for parameter estimation in model updating has no unique solution when, as will typically be the case in structural applications, the dimensionality of the model exceeds the number of target parameters estimated from experiments. One approach for enlarging the target space is to create multiple closed-loop systems that, in addition, can be designed with pole sensitivities favorable for updating the model. The present paper will focus on designing gains for model updating using a recently proposed virtual implementation of output feedback, which allows computation of several closed-loop systems from a single open-loop realization and removes the constraint of closed-loop stability. The gains are designed through an eigenstructure assignment procedure, in which the model parameters to be updated are divided into two different classes; one where the pole sensitivities with respect to the parameter are to be enhanced and one where they are to be reduced. A numerical examination with a structural system is presented that demonstrates the merit of the proposed gain design procedure.
OriginalsprogEngelsk
TitelProceedings of the 13th International Conference on Damage Assessment of Structures : DAMAS 2019, 9-10 July 2019, Porto, Portugal
RedaktørerMagd Abdel Wahab, Zamberi Jamaludin, Mohd Najib Ali Mokhtar
Antal sider8
ForlagSpringer
Publikationsdato2020
Sider372-379
ISBN (Trykt)978-981-13-8330-4
ISBN (Elektronisk)978-981-13-8331-1
DOI
StatusUdgivet - 2020
Begivenhed13th International Conference on Damage Assessment of Structures (DAMAS 2019) - Porto, Portugal
Varighed: 9 jul. 201910 jul. 2019

Konference

Konference13th International Conference on Damage Assessment of Structures (DAMAS 2019)
LandPortugal
ByPorto
Periode09/07/201910/07/2019
NavnLecture Notes in Mechanical Engineering
ISSN2195-4356

Citationsformater

Ulriksen, M. D., & Bernal, D. (2020). On Gain Design in Virtual Output Feedback for Model Updating. I M. A. Wahab, Z. Jamaludin, & M. N. Ali Mokhtar (red.), Proceedings of the 13th International Conference on Damage Assessment of Structures: DAMAS 2019, 9-10 July 2019, Porto, Portugal (s. 372-379). Springer. Lecture Notes in Mechanical Engineering https://doi.org/10.1007/978-981-13-8331-1_26