Volume 6 Issue 3
Jun.  2013
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WU Ying-li, WU Zhen-sen. Micro-vibration laser Doppler signal processing based on Hilbert transform[J]. Chinese Optics, 2013, 6(3): 415-420. doi: 10.3788/CO.20130603.0415
Citation: WU Ying-li, WU Zhen-sen. Micro-vibration laser Doppler signal processing based on Hilbert transform[J]. Chinese Optics, 2013, 6(3): 415-420. doi: 10.3788/CO.20130603.0415

Micro-vibration laser Doppler signal processing based on Hilbert transform

doi: 10.3788/CO.20130603.0415
  • Received Date: 15 Feb 2013
  • Rev Recd Date: 18 Apr 2013
  • Publish Date: 10 Jun 2013
  • To measure the micro-vibration parameters of a solid target, the laser Doppler signal model of microvibration for the solid target was established. First, the laser Doppler vibration instantaneous samples were converted into signal spectral samples based on Hilbert transform. Then, the mean value of the instantaneous frequency per vibration period was determined by spectral method, the value of vibration frequency was obtained by the quadrature procession of the difference sample sequences, and the amplitude was estimated according to the relation between frequency deviation and amplitude of vibration signal. Finally, experimental results were verified according to the Hilbert measuring method and the error source was analyzed. Experimental results indicate that the vibration amplitude of the target is about 1.8510-4 m, and the rotation frequency is about 170 Hz. It is feasible to obtain the motion parameters by using Hilbert transform to measure target micro-vibration.

     

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  • [1] 李艳辉,吴振森,武颖丽. 基于激光多普勒法测量微小阻尼振动[J]. 中国激光,2010,37(1):231-235 LI Y H,WU ZH S,WU Y L. Small damping vibration measurement using laser Doppler effect[J]. Chinese J. Lasers,2010,37(1):231-235.(in Chinese) [2] 周健,龙兴武. 载体振动对差动激光多普勒测速仪的影响[J]. 强激光与粒子束,2011,23(2):157-160. ZHOU J,LONG X W. Influence of vehicle's vibration on dual-beam laser Doppler velocimeter[J]. High Power Laser and Particle Beams,2011,23(2):157-160.(in Chinese) [3] 张建伟,苗超. 撞击流混合器速度信号的Hilbert-Huang变换分析[J]. 实验流体力学,2010,4:66-70. ZHANG J W,MAO CH. Hilbert-Huang transform of velocity signal in impinging stream mixer[J]. J. Experiments in Fluid Mechanics,2010,4:66-70.(in Chinese) [4] KARASIK A Y,RINKEVICHIUS B S,ZUBOV V A. Laser Interferometry Priniciples[M]. Moscow:Mir Publishers and CRC Press,1995. [5] GRECHIKHIN V A. The analysis of the computer techniques for LDA signal processing[J]. Optical Methods for Flows Investigation,1995:23-25. [6] 武颖丽,吴振森. 旋转粗糙圆柱的激光散射功率谱分析[J]. 光学 精密工程,2012,20(12):2654-2660. WU Y L,WU ZH S. Analysis of power spectra for laser scattering intensity on rotating cylinder targets[J]. Opt. Precision Eng.,2012,20(12):2654-2660. [7] GRECHIKHIN V,RINKEVICHIUS B. Hilbert transform for processing of laser Doppler vibrometer signals[J]. Opt. Lasers Eng.,1998,30(2):151-161. [8] 谭善文,秦数人,汤宝平. Hilbert-Huang变换的滤波特性及其应用[J]. 重庆大学学报,2004,27(2):9-12. TAN SH W,QIN SH R,TANG B P. The filtering character of hilbert-huang transform and its application[J]. J. Chongqing University,2004,27(2):9-12.(in Chinese) [9] 何俊峰,张玉钧. 基于希尔伯特-黄变换的激光云高仪后向散射信号去噪方法[J]. 光学学报,2011,31(2):1-10. HE J F,LIU W Q,ZHANG Y J. A denoising method for backscatter signal of laser ceilometer based on Hilbert-Huang transform[J]. Acta Optica Sinica,2011,31(2):1-10.(in Chinese)
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