Xiaodong WANG, Shipeng CUI, Zheng XU, Shiqin LU. Visual composite positioning for precision microassembly[J]. Optics and Precision Engineering, 2023, 31(19): 2857
- Optics and Precision Engineering
- Vol. 31, Issue 19, 2857 (2023)
Fig. 1. Training and application of composite positioning method
Fig. 2. Flowchart of Canny processing
Fig. 3. Photo of precision assembly system
Fig. 4. Positioning results with different light intensities
Fig. 5. Influence of brightness on rough positioning
Fig. 6. Extracted feature coordinates by positioning algorithm
Fig. 7. Positioning results with various defocus distances
Fig. 8. Influence of defocus distances on rough positioning
Fig. 9. Feature coordinates extracted by positioning algorithm
Fig. 10. Positioning results at various rotation angles
Fig. 11. Influence of posture on rough positioning
Fig. 12. Images of part features
Fig. 13. Parts with different surface conditions
Fig. 14. Assembly parts
Fig. 15. Assembly process based on feature positioning
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Table 1. Technical parameters of visual measurement module
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Table 2. Comparison of composite positioning algorithms
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Table 3. Error of target detection algorithm
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Table 4. Error of composite positioning algorithm
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