Error compensation method for a gantry robot and a laser-vision sensor-based chassis module measurement system

This paper describes an error compensation method for a 3D laser measurement system based on a gantry robot used for car chassis sub-frame module dimensional inspection. The method is based on a geometrical model that describes possible distortions in gantry robot installation. Implementation of the error compensation model allows a several-fold decrease in gantry robot positioning error.

[1]  Mun-Sang Kim,et al.  Car-body Inspection System Using Industrial Robots , 1992, Proceedings of the IEEE/RSJ International Conference on Intelligent Robots and Systems.

[2]  Chia-Hsiang Menq,et al.  Multiple-sensor integration for rapid and high-precision coordinate metrology , 2000, 1999 IEEE/ASME International Conference on Advanced Intelligent Mechatronics (Cat. No.99TH8399).

[3]  Roger Y. Tsai,et al.  Calibrating a Cartesian Robot with Eye-on-Hand Configuration Independent of Eye-to-Hand Relationship , 1989, IEEE Trans. Pattern Anal. Mach. Intell..

[4]  S.-G. Lee,et al.  Improvement of Product Accuracy in Freeform Surface Machining , 2003 .