Identification of modal parameters from ambient vibration data using eigensystem realization algorithm with correlation technique

Dar Yun Chiang, Chang Sheng Lin

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)

Abstract

An effective identification method is developed for the determination of modal parameters of a structure based on the measured ambient response data. In this study, modification to Eigensystem Realization Algorithm with Data Correlation is proposed for modalparameter identification of structural systems subjected to stationary white-noise ambient vibration. By setting up a correlation -function matrix of stationary responses, as well as by introducing an appropriate matrix factorization, modal parameters of a system can be identified effectively through singular -value decomposition and eigenvalue analysis. Numerical simulations using practical excitation data confirm the validity and robustness of the proposed method in identifying modal parameters from stationary ambient vibration data under noisy conditions.

Original languageEnglish
Pages (from-to)2377-2382
Number of pages6
JournalJournal of Mechanical Science and Technology
Volume24
Issue number12
DOIs
Publication statusPublished - 2010 Dec 29

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering

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