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논문 상세정보

다차원 스펙트럼 해석법을 이용한 비정상 소음.진동 신호의 소음원 규명

Source Identification of Non-Stationary Sound.Vibration Signals Using Multi-Dimensional Spectral Analysis Method

Abstract

In this paper, time-frequency analysis and multi-dimensional spectral analysis methods are applied to source identification and diagnostic of non-stationary sound vibration signals. By checking the coherences for concerned time, this simulation is very well coincident to expected results. The proposed method analyzes the signal instantaneously in both time and frequency domains. The MDSA (Multiple Dimensional Spectral Analysis) analyzes the signal in the plane of instantaneous time and instantaneous frequency at the same time. And it was verified by using the 1500cc passenger car which is accelerated from 70Hz to 95Hz in 4 seconds, the proposed method is effective in determining the vehicle diagnostic problems.

참고문헌 (10)

  1. Robertson, A. N., Park, K. C., and Alvin, K. F. ,1998, 'Extraction of Impulse Response Data via Wavelet Transform for Structural System Identification,' Trans. of the ASME, Vol. 120, No.1, pp. 252-260 
  2. Oh, J. E. , 1983, 'Applications of Multi-Dimesnional Spectral Analysis for Noise Source Identification on Mechanical Structures,' Thesis for Doctor's Degree, Tokyo Institute of Technology 
  3. Gahy, F. J, 1989, Sound Intensity, Elsevier Applied Science 
  4. Bendat, J. S., and Piersol, A. G., 1993, Engineering Applications of Correlation and Sprvtral Analysis, 2nd Ed., John Wiley & Sons, Inc 
  5. Bendat, J. S., and Piersol, A. G., 2000, Random Data Analysis and Measurement Procedures, 3rd Ed., John Wiley & Sons, Inc 
  6. Alfredson, R. J., 1977, 'The Partial Coherence Technique for Source Identification on a Diesel Engine,' Journal of Sound and Vibration, Vol. 55, No. 4, pp. 487-494 
  7. Trethwey, M. W., and Evensen, H. A., 1981, 'Identification of Noise Source Forge Hammers During Production: An Application of Residual Spectrum Technique to Transients,' Journal of Sound and Vibration, Vol. 77, No.3, pp. 357-374 
  8. Wang, M. E., and Crocker, M. J., 1983, 'On the Application of Coherence Techniques for Source Identification in a Multiple Noise Source Environment,' Journal of the Acoustical Society of America, Vol. 74, No.3, pp. 861-872 
  9. Price, S. M., and Bernhard, R. J., 1986, 'Vritua1 Coherence: A Digital Signal Processing Technique for Incoherent Source Identification,' Proceedings of the 4th International Modal Analysis Conference, pp. 1256-1262 
  10. Park, J. S., and Kim, K. J., 1994, 'Source Identification Using Multi-input I Single-Output Modeling and Causality Checking of Correlated Inputs,' Journal of Vibration and Acoustics, Vol. 116, pp. 232-236 

이 논문을 인용한 문헌 (2)

  1. Park, Sang-Gil ; Kang, Kwi-Hyun ; Hwang, Sung-Wook ; Oh, Ki-Seok ; Rho, Kuk-Hee ; Oh, Jae-Eung 2008. "Transfer Path Analysis and Interior Noise Estimation of the Road Noise Using Multi-dimensional Spectral Analysis Method" 한국소음진동공학회논문집 = Transactions of the Korean society for noise and vibration engineering, 18(11): 1206~1212 
  2. Choi, Ki-Soo ; Jeong, Wei-Bong ; Han, Hyung-Suk ; Kim, Min-Seong 2009. "Noise-source Identification of Evaporator Using Partial Coherence Function" 한국소음진동공학회논문집 = Transactions of the Korean society for noise and vibration engineering, 19(4): 347~354 

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