An Analysis and a 3D Prediction of vibration modes in a Laser Doppler

레이저 도플러의 진동에 대한 분석과 3차원 예측연구

  • Received : 2009.12.09
  • Accepted : 2010.06.25
  • Published : 2010.06.30

Abstract

This is a study on the analysis of vibration mode of a laser doppler. We measure the vibration mode of a doppler and analyze each component, and want to estimate three dimensional properties from 2-dimensional data. The vibration mode relies on a range detector that uses a distance sensor. Since the outputs are determined by the measured distance, we want to study how 3-dimensional vibration mode is generated from 2-dimensional ones. The study will include the patterns of generating a 3-dimensional vibration mode as well as the relationship between the distance and the vibration mode.

본 연구는 레이저 도플러의 진동모드에 대한 분석연구이다. 도플러에서 생성되는 진동모드를 측정하여 각 성분을 분석하여 2차원 연구로부터 3차원을 예측 할 수 있는 성질들을 연구하고자 한다. 진동모드는 범위 탐지기(거리 측정 센서)에 의존하고 있다. 즉, 측정거리에 의해 결정되고 있으므로, 생성되는 변수들로부터 2차원에서부터 3차원에서의 진동모드가 어떻게 생성되는지, 어떤 특성의 패턴으로 나타나는지를 연구함과 더불어, 진동모드와 거리와의 관계도 아울러 연구한다.

Keywords

References

  1. Jongpil La, Kyihwan Park, signal "Processing Algorithm of a Position Sensitive Detector(PSD) using Amplitude Modulation/Demodulation," Review of Scientific Instruments}, 2005, Vol.76, No.2, pp.24701-24706. https://doi.org/10.1063/1.1835651
  2. Jongpil La, Kyihwan Park," High Speed FM Demodulator of a Homodyne Laser Interferometer for Measuring Mechanical Vibration",} Optical Engineering, 2004, Volume 43, pp. 1341-1349. https://doi.org/10.1117/1.1715097
  3. R. Baik, K. Datta and Y. Hong, Computing for Eigenpairs on Globally convergent Iterative for Hermitian Matrices, Lecture Note in Computer Science, 2005, vol. 3514, pp 1- pp 8.
  4. Wang, S., Kyong, Y., La, J., Park, K., Kang, K., and Kim, K., "Vibration Measurement and Analysis using Continuous Scanning Laser Doppler Vibrometer", 2003, 12th IPC.
  5. Xiandi Zeng, Alfred L. Wicks and Larry D. Mitchell, "Geometrical Method for the Determination of the Position and Orientation of a Scanning Laser Doppler Vibro-meter",Opncx and Lasers in Engineering 25, 1996, pp 247-pp264. https://doi.org/10.1016/0143-8166(95)00074-7
  6. J. B. ABBISS, T. W. CHUBB and E. R. PIKE, "Laser Doppler anemometry", Optics and Laser Technology 1974, vol 6, pp. 249-261. https://doi.org/10.1016/0030-3992(74)90006-1
  7. G.A. MASSEY and R. R. CARTER Shock and Vibration Bulletin 1968 vol. 37, pp. 1-6.
  8. W. K. KULCZYK and Q. V. DAvis ," portable laser instrument for vibration analysis and transducer calibration" Opto-Electronics, 1970 vol. 2, pp. 177-179. https://doi.org/10.1007/BF01415096
  9. P. BUCHAVE, " Laser-Doppler vibration measurements using variable frequency shift", D.LS.A. Information Bulletin, 1975 No. 18, pp. 15-20.
  10. IR. J. OLDENGARM, "Laser interferometer with optical frequency shifting for vibration measurements", Institute of Applied Physics TNO-TH, Delft, Netherlands, Information Bulletin, 1976. No. 6.