Chinese Journal of Lasers, Volume. 47, Issue 11, 1104006(2020)
Dynamic Inspection of Wheel Profile Based on ROI-RSICP Algorithm
Figures & Tables(15)
Fig. 1. Measured wheel profiles under different situations. (a) Intersection line of laser plane and wheel surface not crossing wheel axis; (b) wheel profile with distortion; (c) intersection line of laser plane and wheel surface crossing wheel axis; (d) wheel profile without distortion
Fig. 7. Partial results of extracted ROI based on PointNet. (a) Standard; (b) slightly worn; (c) badly worn
Fig. 8. Accuraccy comparison among ICP, SICP and proposed methods. (a) Original model; (b) ICP; (c) SICP; (d) ROI-RSICP
Fig. 9. Registration results of wheel profile under different IoU values. (a) Slightly worn; (b) badly worn
Fig. 10. Difference between inspection result by proposed method and that by the 4th kind of inspector versus IoU
Fig. 11. Stability comparison of ICP, SICP and proposed methods under different included angles. (a) 30°; (b) 35°; (c) 40°; (d) 45°; (e) 50°; (f) 55°; (g) 60°
Fig. 12. Difference between tread wear calculated by each method and result measured by the 4th kind of inspector
Table 1. Tread wear detected by ICP, SICP, ROI-RSICP and artificial methods unit: mm
View tableTable 1. Tread wear detected by ICP, SICP, ROI-RSICP and artificial methods unit: mm
Method Data type Position 1 Position 2 Position 3 Position 4 Position 5 Position 6 ICP Slightly worn 1.60 1.74 1.88 1.23 2.23 1.49 SICP 1.13 1.27 1.14 1.25 1.56 1.36 ROI-RSICP 1.76 1.94 1.99 1.75 2.09 1.84 Artificial method 1.80 1.90 1.90 1.80 2.00 1.70 ICP badly worn 2.70 3.11 2.55 2.96 1.04 2.43 RSICP 0.99 1.01 1.81 2.21 2.14 1.78 ROI-RSICP 4.19 4.11 4.15 4.21 4.12 4.39 Artificial method 4.10 4.00 4.10 4.30 4.10 4.50
Table 2. Repeated detection results of badly worn wheel unit: mm
View tableTable 2. Repeated detection results of badly worn wheel unit: mm
Number of measurements Flange height Flange thickness Tread wear ROI-RSICP Artificial method ROI-RSICP Artificial method ROI-RSICP Artificial method 1 31.14 31.10 30.11 30.20 4.14 4.10 2 31.18 31.10 30.09 30.10 4.18 4.10 3 31.12 31.00 30.12 30.20 4.12 4.00 4 31.13 31.00 30.07 30.10 4.13 4.00 5 31.12 31.10 30.12 30.20 4.12 4.10 6 31.20 31.10 30.10 30.10 4.20 4.10 Mean 31.15 31.07 30.10 30.15 4.15 4.07 SD 0.033 0.051 0.0194 0.054 0.033 0.051
Table 3. Dynamic inspection results of wheel geometric parameters unit: mm
View tableTable 3. Dynamic inspection results of wheel geometric parameters unit: mm
Parameter Method Measurement result Maximum error 1 2 3 4 5 6 Flange height ROI-RSICP 32.11 32.08 32.11 32.07 32.08 32.04 Artificial method 32.2 32.1 32.1 32.1 32.2 32.1 0.12 Flange thickness ROI-RSICP 31.08 31.12 31.13 31.12 31.14 31.14 Artificial method 31.2 31.2 31.2 31.1 31.2 31.2 0.12 Tread wear ROI-RSICP 5.11 5.08 5.11 5.07 5.08 5.04 Artificial method 5.1 5.1 5.1 5.0 5.1 5.0 0.07
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Yi Qian, Zhong Haoyu, Liu Long, Liu Wenlong, Yi Bing. Dynamic Inspection of Wheel Profile Based on ROI-RSICP Algorithm[J]. Chinese Journal of Lasers, 2020, 47(11): 1104006
Paper Information
Category: Measurement and metrology
Received: Jun. 4, 2020
Accepted: --
Published Online: Oct. 23, 2020
The Author Email: Bing Yi (bingyi@csu.edu.cn)
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