Journal of Industrial Technology (산업기술연구)

Kangwon National University, Institute of Industrial Technology (강원대학교 산업기술연구소)
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Analysis Technique for the Vibration Signal of Revolution Machine Using the STFT

STFT를 이용한 회전체의 진동신호 분석 기법

  • 박종연 (강원대학교 대학원 전기전자공학전공) ;
  • 박준용 (강원대학교 대학원 전기전자공학부) ;
  • 최원호 (강원대학교 대학원 전기공학과)
  • Published : 2004.02.29
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Abstract

The purpose of this study is to analyze the vibration signal of the revolution machine using the STFT(Short Time Fourier Transform). It is common to analyze the frequency of signal through FFT algorithm with the fixed sampling rate. However, in this situation the order spectrum information useful rather than the general frequency information with the fixed sampling rate. In this paper, the resampling technique was used for getting the information of order spectrum. In resampling process, the arithmetic amount and MSE(Mean Square Error) for various kinds of the signal interpolation was compared and presented the propriety of the interpolation method while developing analysis equipment. Order tracking was implemented using signal interpolation method which it has selected. Then the analyzed results were obtained through simulation using the STFT technique.

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