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Design of Welding Strategy for Long Curved Weld Based on Movable Base Robot

  • Zhonghao Qin
  • , Zhiheng Liu
  • , Qiuhao Chen
  • , Hualiang Liu
  • , Ruifeng Li*
  • *Corresponding author for this work
  • Harbin Institute of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In order to achieve stable welding and continuous weld formation of long curved welds, this paper proposes a segmented welding strategy based on dynamic constraint fitting and inertial-visual compensation. In the welding stage, based on the trajectory delay planning strategy, the trajectory of the global weld tracking points is planned by collecting one segment, planning one segment, and intercepting one segment, and the welding gun orientation is planned by quaternion filtering and spherical linear interpolation. In the connection stage, when the robot base movement is unknown, the welding gun pose is coarsely compensated based on inertial measurement, so that the welding gun is initially stabilized near the welding pause point, and then the joint scale-free relative pose optimization and global scale calibration are performed based on image features and kinematics to accurately compensate the welding gun pose. Experiments show that the proposed strategy achieves good weld connection effects and satisfactory trajectory deviation.

Original languageEnglish
Title of host publicationAdvances in Mechanical Design - Proceedings of The 2025 International Conference on Mechanical Design ICMD 2025
EditorsJianrong Tan, Zhenyu Liu, Weifei Hu
PublisherSpringer Science and Business Media B.V.
Pages1286-1306
Number of pages21
ISBN (Print)9789819579037
DOIs
StatePublished - 2027
EventInternational Conference on Mechanical Design, ICMD 2025 - Hangzhou, China
Duration: 9 May 202511 May 2025

Publication series

NameMechanisms and Machine Science
Volume206
ISSN (Print)2211-0984
ISSN (Electronic)2211-0992

Conference

ConferenceInternational Conference on Mechanical Design, ICMD 2025
Country/TerritoryChina
CityHangzhou
Period9/05/2511/05/25

Keywords

  • Long Curved Weld
  • Movable Base Robot
  • Robot Welding
  • Segmented Welding
  • Trajectory Planning

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