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	Vision system for closed-loop control of the penetration in laser-MIG hybrid welding
	Shuang Yuanqing ; Chen Wuzhu ; Wang Kangjian ; Shan Jiguo ; Zhang Yongqiang
	2010-10-12 ; 2010-10-12
关键词	Practical/ arc welding butt welding closed loop systems computer vision gas lasers image sensors laser beam welding signal processing welds/ vision system closed-loop control system vision sensors digital signal processing CO/sub 2/ laser-MIG hybrid welding gapped butt hybrid welding weld penetration/ A4262A Laser materials processing A4255D CO/sub 2/ lasers B8620 Power applications in manufacturing industries B0170G General fabrication techniques B7230G Image sensors B4320C Gas lasers B6135 Optical, image and video signal processing B4360B Laser materials processing C3355F Control applications in assembling C3240K Image sensors C5260B Computer vision and image processing techniques E1520E Joining processes and welding E1610 Inspection and quality control E1550 Control technology and theory
中文摘要	Real-time detection and control of penetration is needed to ensure steady weld penetration with even as the penetration status changes with variations of the gap width in butt joined welding. A penetration status detection and control system was developed based on vision sensors and digital signal processing for CO/sub 2/ laser-MIG hybrid welding with gapped butts. Clear backside images of the molten pool were obtained and analyzed to measure the backside widths of the molten pool. The penetration status was controlled by adjusting the welding speed or the arc current. Tests show that even with significant gap width variations, steady penetration and weld depths with uniform backside widths are obtained by the closed-loop control of the penetration in gapped butt hybrid welding.
语种	中文
出版者	Tsinghua University Press ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/80506]
专题	清华大学
推荐引用方式 GB/T 7714	Shuang Yuanqing,Chen Wuzhu,Wang Kangjian,et al. Vision system for closed-loop control of the penetration in laser-MIG hybrid welding[J],2010, 2010.
APA	Shuang Yuanqing,Chen Wuzhu,Wang Kangjian,Shan Jiguo,&Zhang Yongqiang.(2010).Vision system for closed-loop control of the penetration in laser-MIG hybrid welding..
MLA	Shuang Yuanqing,et al."Vision system for closed-loop control of the penetration in laser-MIG hybrid welding".(2010).

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