Vision-based weld seam tracking in gas metal arc welding

作     者：GAO Jinqiang WU Chuansong LIU Xizhang XIA Dianxiu 

作者机构：State Key Laboratory of Advanced Welding Production TechnologyHarbin Institute of TechnologyHarbin 150001China Institute of Materials JoiningShandong UniversityJinan 250061China Post-doctorate Work StationJinan Iron and Steel Group CorporationJina Institute of Materials JoiningShandong UniversityJinan 250061China Post-doctorate Work StationJinan Iron and Steel Group CorporationJinan 250101China 

出 版 物：《中国高等学校学术文摘·材料科学》 (FRONTIERS OF MATERIALS SCIENCE IN CHINA)

年 卷 期：2007年第1卷第3期

页      面：268-273页

核心收录：

学科分类：08[工学] 081101[工学-控制理论与控制工程] 0811[工学-控制科学与工程] 081102[工学-检测技术与自动化装置] 

主　　题：seam tracking root gap gas metal arc welding (GMAW) image 

摘      要：A low-cost visual sensmg system is developed to realize weld seam tracking in gas metal arc welding(GMAW).The system consists of a commercial CCD camera,narrow-band composite filter lens,an image capturing card,an industrial computer,a welding control unit,a GMAW power source,and a *** of root gap and its vicinity are captured in the GMAW welding process by the *** captured images arc processed by an algorithm on the basis of the analysis of gray characteristics of the root gap to get the offsetting information between torch and root gap *** offsetting information is then used to realize weld seam tracking in the GMAW *** seam tracking experiment is conducted by a simple proportional(P)*** results show that tracking error is basically less than ±0.5 mm.