Pattern Recognition and Image Analysis

, Volume 28, Issue 1, pp 97–105 | Cite as

A Novel Method to Measure Sub-micro Repeatability of the High-Precision Positioning Control System Based on Digital Image Correlation Method

  • Yong Sang
  • Jianlong Zhao
  • Haonan Xu
  • Pengpeng Wang
  • Lilai Shao
Software and Hardware for Pattern Recognition and Image Analysis


To measure and analyze the repeatability of the high-precision positioning control system, an optical technique based on Digital Image Correlation (DIC) method coupling with digital microscope is proposed. In this study, the reliability and feasibility of this method is verified in high-accuracy motorized linear platform, the repeatability of which is calibrated as ±0.3 μm. To determine the in-plane displacement, the DIC requires two speckles images during each hysteresis process to represent the displacement change of platform using digital microscope. In essence, the method can be considered as a “plane to plane” measurement, which can effectively reduce the random error compared to “point to point” measurements. In last, five groups of displacement data under different loadings were obtained and be used to testify the feasibility of this method. In summary, the present study provides a simple, low-cost and efficient non-contact optical technique to detect sub-micro repeatability.


sub-micro repeatability digital image correlation optical detection 


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Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  • Yong Sang
    • 1
  • Jianlong Zhao
    • 1
  • Haonan Xu
    • 1
  • Pengpeng Wang
    • 1
  • Lilai Shao
    • 1
  1. 1.School of Mechanical EngineeringDalian University of TechnologyDalian, LiaoningP. R. China

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