Infrared and Laser Engineering, Volume. 54, Issue 3, 20240594(2025)

Research on rapid displacement measurement method based on vortex interference utilizing double PD sampling (invited)

Cong LUO1, Qun YUAN1, Chen DING1, Yicen MA1, Xiangnan HOU1, Wenzhuo YANG1, Zhishan GAO1, Zhenyan GUO1, and Yao XU2
Author Affiliations
  • 1School of Electronic Engineering and Optoelectronic Technology, Nanjing University of Science and Technology, Nanjing 210094, China
  • 2Jiangsu Shuguang Opto-electronics Co. Ltd., Yangzhou 225109, China
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    Figures & Tables(12)
    (a) Interference principle; (b) PD geometric layout
    Precision displacement measurement system using vortex wave and plane wave interference
    Simulation results. (a) PD acquisition signal curve; (b) Wrapped phase; (c) Comparison results between standard displacement curve and actual displacement curve
    Results of PD target size differences. (a) PD acquisition signal curve; (b) Comparison between standard displacement curve and actual displacement curve
    (a) The uncorrected Lissajous figure; (b) The corrected Lissajous figure
    Signal processing flowchart
    Experimental setup for micro-displacement measurement
    PD processed interference signal
    Repeatability experiment results
    Actual displacement curve of motor
    Repetitive experimental results at different speeds
    • Table 1. Actual displacement results of the motor at different speeds

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      Table 1. Actual displacement results of the motor at different speeds

      Set displacement/mmMax velocity/mm·s–1Average value/mmRepeatability error/μm
      1019.7303
      101.59.7323
      1029.7342
      102.69.7352
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    Cong LUO, Qun YUAN, Chen DING, Yicen MA, Xiangnan HOU, Wenzhuo YANG, Zhishan GAO, Zhenyan GUO, Yao XU. Research on rapid displacement measurement method based on vortex interference utilizing double PD sampling (invited)[J]. Infrared and Laser Engineering, 2025, 54(3): 20240594

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    Paper Information

    Category: 光电测量

    Received: Dec. 23, 2024

    Accepted: --

    Published Online: Apr. 8, 2025

    The Author Email:

    DOI:10.3788/IRLA20240594

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