A Comparative Study of System Identification Techniques Under Ambient Vibration

  • Muhammad S. Rahman
  • David T. Lau
Conference paper
Part of the Conference Proceedings of the Society for Experimental Mechanics Series book series (CPSEMS)


This paper presents the dynamic properties of the Confederation Bridge extracted by four output-only system identification algorithms applied to vibration monitoring data. The purpose of this study is to evaluate the efficiency and accuracy of different modal identification methods, particularly in the presence of high level of uncertainty and noise related to field measurement data. The modal estimates obtained using these alternative approaches are compared and verified against the modal properties from the finite element model.


Ambient vibration Operational modal analysis Structural health monitoring System identification Continuous monitoring 



The financial support for this research provided by the Natural Science and Engineering Research Council and the technical assistance provided by the maintenance and operation staff of the Strait Crossing Bridge Ltd are gratefully acknowledged.


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Copyright information

© The Society for Experimental Mechanics, Inc. 2013

Authors and Affiliations

  1. 1.Department of Civil and Environmental EngineeringOttawa-Carleton Bridge Research Institute, Carleton UniversityOttawaCanada

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