Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Noise Analysis of Geared Motor using Cepstrum and Comb Lifter

Cepstrum과 Comb Lifter를 이용한 기어드 모터의 소음 분석

  • 이민환 (대우정밀 기술연구소) ;
  • 강동배 (부산대학교 지능기계공학과 대학원) ;
  • 김화영 (부산대학교 기계기술연구소) ;
  • 안중환 (부산대학교 기계공학부)
  • Published : 2005.05.01
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Abstract

Gearing system emits inconsistent noise from gear teeth impact in case of gear defects. But, it is not easy for inspection operator in production line to distinguish objectively the defective product. Therefore, customer complains continuously bad noise of the geared motor. Because impulsive signal at low frequency has a tendency not to appear in frequency domain, it is difficult to separate the gear inconsistent noise of defective gear from overall geared motor's noise using general signal processing method such as FFT. In this paper, the method to estimate more objectively the inconsistent noise of gearing system and to measure the quantities is suggested. Suggested method uses Cepstrum, Autocorrelation, Comb Lifter and Inverse Cepstrum by turns to make objective quantities about noise level.

Keywords

References

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