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Many efforts have been made to develop an automatic welding system in order to improve the quality and productivity in welding shipping containers and LNG (Liquefied Natural Gas) storage tanks which consist of many sheet metals having linear weldments with height variation. A vision sensor which can provide 3D geometry information about objects is investigated primarily, because it is difficult to...
Among the various types of sensors used in welding automation, arc and vision sensors are widely used for automatic seam tracking and quality control of arc welding processes. The development of a vision sensor which can provide 3D geometry information is needed especially for robot guidance in automatic welding of thin plates, because it is difficult to apply an arc sensor to the welding of thin...