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This paper presents a friction-aware robotic peg-in-hole assembly method through real-time wrench measurement. The objective is to develop a novel peg-in-hole strategy for industrial assembling, including autonomous adjustment of position and orientation, to enhance assembly precision in uncertain situations. To this end, first, the peg–hole angular deviation, including rotation direction and angle, is determined. To achieve this, an alignment surface parallel to the peg–hole mating interface is defined, and the geometric and friction-aware force/torque (F/T) relationship between the hole and alignment surface is derived. Second, a robust position searching strategy is developed to align the peg with the hole, and the convergence of target positions is ensured through mathematical derivation. Third, we further investigate the pose fine-tuning and insertion strategies to compensate for residual pose estimation errors and ensure the success of peg-in-hole assembly, respectively. Finally, we validate the effectiveness of the proposed method through a real-world peg-in-hole assembly scenario on an industrial robot. Experiment results demonstrate the critical role of friction in determining estimation accuracy of the peg–hole misalignment angle, and show the superior estimation accuracy and robustness of the proposed method in peg-in-hole assembling. © 2025 Elsevier Ltd
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Measurement: Journal of the International Measurement Confederation
ISSN: 0263-2241
Year: 2026
Volume: 257
5 . 2 0 0
JCR@2023
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ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 0
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