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웨이블렛 변환을 이용한 질량선 및 강체특성의 규명

Identification of Mass-lines and Rigid Body Properties Using Wavelet Transform

  • 안세진 (부산대학교 기계공학부) ;
  • 정의봉 (부산대학교 대학원 기계설계학과) ;
  • 황대선 (부산대학교 대학원 기계설계학과)
  • 발행 : 2002.09.01

초록

The rigid body properties of a structure may be estimated easily if the mass-line of the structure could be taken exactly. However, the exact mass-line nay be hard to be obtained exactly in experiments. The mass line value can be read from the mass line in frequency response function. However, the mass lines in the frequency response function sometimes show the fluctuation with frequency, and it cannot be read correctly. In this paper, the wavelet transform is applied to obtain the good mass line value. The mass line calculated by using wavelet transform has unique value and showed in the range of fluctuated values of frequency response function. The rigid body properties obtained by wavelet transform also showed better results than those by fourier transform.

키워드

참고문헌

  1. 안세진, 정의봉, 황대선, 2001, "자유경계 조건에서의 질량선에 의한 강체특성 규명", 한국소음진동공학회, 추계학술대회논문집. pp. 745-749.
  2. Mallat, S., 1998 : A Wavelet Tour Of Signal Processing, Academic Press, USA.
  3. Chan, Y. T., 1996 : Wavelet Basics, kluwer academic publishers, Royal Military College of Canada.
  4. 김윤영, 김응훈, 2000, "웨이블렛을 이용한 보의 결함진단", 대한기계학회논문집, 제 24 권 제 2 호, pp. 518-525.