Journal of KSNVE (소음진동)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
권호 표지

An Application of the Instrumental Variable Method(IVM) to a Parameter Identification of a Noise Contaminated Bearing Test Rig

IV 방법을 이용한 잡음이 포함된 베어링 실험 장치의 동특성 파라미터 추출

  • 이용복 (한국과학기술연구원, 기전연구부) ;
  • 김창호 (한국과학기술연구원, 기전연구부) ;
  • 최동훈 (한양대학교 공과대학 기계설계과)
  • Published : 1996.10.01
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Abstract

The Instrumental Variable Method(IVM), modified from least square algorithm, is applied to parameter identification of a noise contaminated bearing test rig. The signal to noise ratio included in Frequency Response Function(FRF) can cause significant errors in parameter identification. Therefore, among several candidates of parameter identification method, results of the applied IVM were compared with noise-contaminated least square method. This study shows that the noise-contaminated least square method can have indonsistent accuracy depending on the degree of noise level, while the IVM has robuster performance to signal to noise ratio than least square method.

Keywords

References

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