Journal of Biosystems Engineering

Korean Society for Agricultural Machinery (한국농업기계학회)
권호 표지

Vibration Source Identification of Agricultural Machinery Using Coherence Function

기여도함수를 이용한 농업기계의 소음원 규명

  • Published : 2001.12.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, time-fiequency analysis and multi-dimensional spectral analysis methods are applied for source identification and diagnosis of non-stationary sound/vibration signals. Sound or vibration problems of general vehicle and agricultural machinary are under 500 Hz. So We used linearly increased chirp signals under 500 Hz. By checking the coherences on concerned time, fur time-variant non-stationary signals, this simulation it very well coincident to expected results.

Keywords

References

  1. Engineering Applications of Correlation and Spectral Analysis(2nd Ed.) Bendat, J. S.;A. G. Piersol
  2. Randon Data Analysis and Measurement Procedures(3rd Ed.) Bendat, J. S.;A. G. Piersol
  3. Applications of Multi-Dimensional Spectral Analysis for Noise Source Identification on Mechanical Structures Oh, J. E.
  4. Journal of Vibration And Acoustics v.116 Source Identification Using Multi-Input / Single-Output Modeling and Causality Checking of Correlated Inputs Park, J. S.;K. J. Kim
  5. Proceedings of the 4th International Model Analysis Conference Virtural Coherence: A Digital Signal Processing Technique for Incoherent Source Identification Price, S. M.;R. J. Bernhard
  6. Trans. of the ASME v.120 no.1 Extraction of Impulse Response Data via Wavelet Transform for Structural System Identification Robertson, A. N.;K. C. Park;K. F. Alvin
  7. Journal of the Acoustical Society of America v.73 no.3 On the Application of Coherence Techniques for Source Identification in a Multiple Noise Source Environment Wang, M. E.;M. J. Crocker