• Chinese Journal of Lasers
  • Vol. 45, Issue 1, 104003 (2018)
Chen Hongfang*, Sun Yanqiang, Wang Yawei, Shi Zhaoyao, and Song Huixu
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  • [in Chinese]
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    DOI: 10.3788/CJL201845.0104003 Cite this Article Set citation alerts
    Chen Hongfang, Sun Yanqiang, Wang Yawei, Shi Zhaoyao, Song Huixu. High-Precision Laser Tracking Measurement Method and Experimental Study[J]. Chinese Journal of Lasers, 2018, 45(1): 104003 Copy Citation Text show less

    Abstract

    In this paper, a high-precision laser tracking measurement method is proposed in order to meet the requirements of high measurement accuracy, large measurement range and real-time measurement in every filed of modern industry, which realizes precise tracking measurement of follow-up target. The laser tracking measurement system based on the four-quadrant detector can measure the incident laser spot offset that is relative to the center of the four-quadrant detector in real time. A fast response servo motor and the motion control card of programmable multi-axes controller (PMAC) are applied to build the closed-loop control system, which achieves high precision and fast laser tracking measurement. The experimental results show that the high-precision laser tracking measurement method proposed in this paper has good real-time performance and high measurement accuracy. When the tracking measurement of laser spot is within ±1000 μm away from the center of the four-quadrant detector, the error of spot offset is about 31.2 μm, and the average time of the laser spot returning the center of four-quadrant detector is 0.259 ms.
    Chen Hongfang, Sun Yanqiang, Wang Yawei, Shi Zhaoyao, Song Huixu. High-Precision Laser Tracking Measurement Method and Experimental Study[J]. Chinese Journal of Lasers, 2018, 45(1): 104003
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