Abstract

A novel light scanning system based on circular laser trajectory for welding robot is developed. With the help of image processing technique, intelligent laser welding could be realized. According to laser triangulation algorithm and Scheimpflug condition, mathematical model for circular laser vision is built. This scanning system projects circular laser onto welded seams and recovers the depth of the welded seams, escapes from shortcomings of less information, explains ambiguity and single tracking direction inherent in "spot" or "line" type laser trajectory. Three-dimensional (3D) model for welded seams could be recognized after depth recovery. The imaging error is investigated also.

© 2005 Chinese Optics Letters

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  1. Z. Li, Z. Jing, and Z. Sun, Chin. Opt. Lett. 2, 578 (2004).
  2. H. Zhang, Z. Xiong, J. Jia, and J. Pan, Chin. J. Mech. Engineering (in Chinese) 38, 113 (2002).
  3. Z. Zhu, Research on welding robot recognizing and guiding of the initial welding position with visual method (in Chinese) (Ph.D, Shanghai Jiao Tong University, 2004).
  4. M. G. George, On-line laser ultrasonic sensing for control of robotic welding quality (in Chinese) (Ph.D, Georgia Institute of Technology, 1995).
  5. N. Shibata, A. Hirai, Y. Takano, and Y. Ishimaru, Welding Research Abroad 46, 9 (2000).
  6. S. Chen, Y. Lou, L. Wu, and D. Zhao, Welding Journal 79, 151 (2000).
  7. J.-Y. Yu, and S.-J. Na, Mechatronics 7, 599 (1997).
  8. J. Wang, Visual information acquisition and adaptive control of weld pool dynamics of aluminum alloy during pulsed TiG welding (Ph.D, Shanghai Jiao Tong University, 2003).

2004 (1)

2002 (1)

H. Zhang, Z. Xiong, J. Jia, and J. Pan, Chin. J. Mech. Engineering (in Chinese) 38, 113 (2002).

2000 (2)

N. Shibata, A. Hirai, Y. Takano, and Y. Ishimaru, Welding Research Abroad 46, 9 (2000).

S. Chen, Y. Lou, L. Wu, and D. Zhao, Welding Journal 79, 151 (2000).

1997 (1)

J.-Y. Yu, and S.-J. Na, Mechatronics 7, 599 (1997).

Chin. J. Mech. Engineering (in Chinese) (1)

H. Zhang, Z. Xiong, J. Jia, and J. Pan, Chin. J. Mech. Engineering (in Chinese) 38, 113 (2002).

Chin. Opt. Lett. (1)

Mechatronics (1)

J.-Y. Yu, and S.-J. Na, Mechatronics 7, 599 (1997).

Welding Journal (1)

S. Chen, Y. Lou, L. Wu, and D. Zhao, Welding Journal 79, 151 (2000).

Welding Research Abroad (1)

N. Shibata, A. Hirai, Y. Takano, and Y. Ishimaru, Welding Research Abroad 46, 9 (2000).

Other (3)

Z. Zhu, Research on welding robot recognizing and guiding of the initial welding position with visual method (in Chinese) (Ph.D, Shanghai Jiao Tong University, 2004).

M. G. George, On-line laser ultrasonic sensing for control of robotic welding quality (in Chinese) (Ph.D, Georgia Institute of Technology, 1995).

J. Wang, Visual information acquisition and adaptive control of weld pool dynamics of aluminum alloy during pulsed TiG welding (Ph.D, Shanghai Jiao Tong University, 2003).

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