기어 정렬불량에 의한 전류, 진동 및 음향방출 신호의 비교 분석

Comparison of current, vibration and acoustic emission signal occurred by gear misalignment

  • 구동식 (경상대학교 대학원 정밀기계공학과) ;
  • 이정환 (경상대학교 대학원 정밀기계공학과) ;
  • 김병수 (경상대학교 대학원 정밀기계공학과) ;
  • 양보석 (부경대학교 기계공학부) ;
  • 최병근 (경상대학교 기계항공공학부)
  • 발행 : 2008.11.05

초록

To detect the failures in machine, the signals of current, vibration and acoustic emission are widely used in industry. And unexpected failures of gears are not only extremely damaging but also lead to economic losses. In this paper, to detect the misalignment occurred at between two gears in gearboxes, the signals of current, vibration and AE were measured at gearbox and motor power line. FFT(Fast Fourier Transform) was used for current and vibration signal analysis to find gear failure frequency. Especially, the envelop analysis and wavelet transform were applied for AE signal. Therefore, compared with the results of three kinds of signal, the possibility of earily detection by AE is identified or checked.

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