Optics and Precision Engineering, Volume. 30, Issue 22, 2889(2022)

Assembly of countersunk-hole parts based on 3D pose estimation and impedance control

Ping CHEN*, Xuejun LEI, Can LI, Yiliang HU, and Shuang CHEN
Author Affiliations
  • College of Mechanical and Vehicle Engineering, Chongqing University, Chongqing400044, China
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    Figures & Tables(20)
    Platform of robotic assembly
    Outliers and noise of point cloud
    Results of supervoxel segmentation and CPC clustering
    Results of supervoxel segmentation
    Outliers and noise of the edge
    Schematic diagram of the weight function
    Results of plane fitting
    Point cloud
    Inliers of countersunk-hole
    Profile of countersunk-hole
    Contact force generated when the cylindrical shaft part contacts the hole wall
    Platform of countersunk-hole part assembly
    Comparison of plane fitting results
    Comparison of plane fitting results under outliers
    Process of countersunk hole pose estimation
    Assembly process
    Force and torque
    • Table 1. Comparison of plane fitting results

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      Table 1. Comparison of plane fitting results

      方法ABCDΔd/mmΔθ/(°)
      MSAC-0.023 3-0.020 9-10.053 60.094 21.793 1
      LS-0.024 9-0.022 8-1-2.063 80.092 51.935 7
      HT-0.027 5-0.021 5-10.634 00.095 72.000 0
      RANSAC0.377 20.587 02-1-0.328 60.093 415.876 6
      WRANSAC*-0.023 3-0.021 7-10.007 20.093 41.823 6
    • Table 2. Comparison of plane fitting results under outliers

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      Table 2. Comparison of plane fitting results under outliers

      方法ABCDΔd/mmΔθ/(°)
      MSAC-0.026 1-0.024 8-1-0.586 70.093 52.064
      LS-0.046 11.474 2-10.975 70.095 255.862 9
      HT-0.027 5-0.021 5-10.906 70.094 72.000 0
      RANSAC-0.098 40.031 9-1-0.977 50.093 86.698 3
      WRANSAC*-0.024 1-0.022 1-1-0.136 60.092 61.872 0
    • Table 3. Error of different postures

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      Table 3. Error of different postures

      姿态RMSEΔd/mmRMSEΔθ/(°)
      姿态10.3510.639
      姿态20.4250.513
      姿态30.3740.607
      姿态40.4980.688
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    Ping CHEN, Xuejun LEI, Can LI, Yiliang HU, Shuang CHEN. Assembly of countersunk-hole parts based on 3D pose estimation and impedance control[J]. Optics and Precision Engineering, 2022, 30(22): 2889

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    Paper Information

    Category: Micro/Nano Technology and Fine Mechanics

    Received: Jul. 20, 2022

    Accepted: --

    Published Online: Nov. 28, 2022

    The Author Email: CHEN Ping (pingchen@cqu.edu.cn)

    DOI:10.37188/OPE.20223022.2889

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