Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Robust Modal Parameter Idnentification Using Total Least Square Method

전최소자승법을 이용한 강인한 모드매개변수

  • 정의봉 (부산대학교 정밀기계공학과 및 기계기술연구소) ;
  • 김준엽 (국방과학연구소 환경실험실) ;
  • 김현 (LG전자(주)생활시스템연구소)
  • Published : 1996.03.01
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Abstract

The least square estimation is used frequently in experimental modal analysis techinque to eliminate noise signals. However, identified modal parameters are sometimes inaccurate, since the least squre estimation is sensitive to noise. In this paper, a new total least squre estimation, which is robust to noise signals, is developed and applied to experimental modal analysis technique such as Prony method and Circle Fit method. Several simulated results show that the proposed method is robuster to noise than conventional method.

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