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On Gain Design in Virtual Output Feedback for Model Updating

  • Martin Dalgaard Ulriksen
  • , Dionisio Bernal

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

Abstract

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.
Original languageEnglish
Title of host publicationProceedings of the 13th International Conference on Damage Assessment of Structures : DAMAS 2019, 9-10 July 2019, Porto, Portugal
EditorsMagd Abdel Wahab, Zamberi Jamaludin, Mohd Najib Ali Mokhtar
Number of pages8
PublisherSpringer
Publication date2020
Pages372-379
ISBN (Print)978-981-13-8330-4
ISBN (Electronic)978-981-13-8331-1
DOIs
Publication statusPublished - 2020
Event13th International Conference on Damage Assessment of Structures (DAMAS 2019) - Porto, Portugal
Duration: 9 Jul 2019 → 10 Jul 2019

Conference

Conference13th International Conference on Damage Assessment of Structures (DAMAS 2019)
Country/TerritoryPortugal
CityPorto
Period09/07/2019 → 10/07/2019
SeriesLecture Notes in Mechanical Engineering
ISSN2195-4356

Keywords

  • Gain design
  • Model updating
  • Output feedback
  • Virtual implementation

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