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Vision of the Arc for Quality Documentation and for Closed Loop Control of the Welding Process

Morten Kristiansen1, Ewa Kristiansen1, Casper Houmann Jensen2 , and René Slot Christensen3
1.Department of Mechanical and Manufacturing Engineering, Aalborg, Denmark
2.Aalborg Engineering, Aalborg, Denmark
3.Novo Nordisk, Hillerød, Denmark
Abstract—For gas metal arc welding a vision system was developed, which was robust to monitor the position of the arc. The monitoring documents the welding quality indirectly and a closed loop fuzzy control was implemented to control an even excess penetration. For welding experiments on a butt-joint with a V-groove with varying root gapthe system demonstrated increased welding quality compared to the system with no control. The system was implemented with a low cost vision system, which makes the system interesting to apply in industrial welding automation systems.

Index Terms—Gas metal arc welding, fuzzy control, closed loop control, welding documentation, vision, automation

Cite: Morten Kristiansen, Ewa Kristiansen, Casper Houmann Jensen, and René Slot Christensen, "Vision of the Arc for Quality Documentation and for Closed Loop Control of the Welding Process," Jounal of Automation and Control Engineering, Vol. 2, No. 4, pp. 410-416, December, 2014. doi: 10.12720/joace.2.4.410-416
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