Operational Modal Analysis using Expectation Maximization Algorithm

Cara Cañas, Francisco Javier and Carpio Huertas, Jaime and Juan Ruiz, Jesús and Alarcón Álvarez, Enrique (2011). Operational Modal Analysis using Expectation Maximization Algorithm. In: "8th International Conference on Structural Dynamics, EURODYN 2011", 04/07/2011 - 06/07/2011, Leuven (Bélgica). ISBN 978-90-760-1931-4.

Description

Title: Operational Modal Analysis using Expectation Maximization Algorithm
Author/s:
  • Cara Cañas, Francisco Javier
  • Carpio Huertas, Jaime
  • Juan Ruiz, Jesús
  • Alarcón Álvarez, Enrique
Item Type: Presentation at Congress or Conference (Article)
Event Title: 8th International Conference on Structural Dynamics, EURODYN 2011
Event Dates: 04/07/2011 - 06/07/2011
Event Location: Leuven (Bélgica)
Title of Book: Proceedings of the 8th International Conference on Structural Dynamics, EURODYN 2011
Date: 2011
ISBN: 978-90-760-1931-4
Subjects:
Freetext Keywords: System identification in structures, State Space models, Kalman filter, Operational Modal analysis, Maximum likelihood estimation, Expectation Maximization algorithm
Faculty: E.T.S.I. Industriales (UPM)
Department: Ingeniería de Organización, Administración de Empresas y Estadística
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

This paper presents a time-domain stochastic system identification method based on Maximum Likelihood Estimation and the Expectation Maximization algorithm. The effectiveness of this structural identification method is evaluated through numerical simulation in the context of the ASCE benchmark problem on structural health monitoring. Modal parameters (eigenfrequencies, damping ratios and mode shapes) of the benchmark structure have been estimated applying the proposed identification method to a set of 100 simulated cases. The numerical results show that the proposed method estimates all the modal parameters reasonably well in the presence of 30% measurement noise even. Finally, advantages and disadvantages of the method have been discussed.

More information

Item ID: 26380
DC Identifier: http://oa.upm.es/26380/
OAI Identifier: oai:oa.upm.es:26380
Official URL: http://www.eurodyn2011.org/html/searchresults.html
Deposited by: Biblioteca ETSI Industriales
Deposited on: 22 May 2014 08:56
Last Modified: 22 Sep 2014 11:41
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