| 基于视觉传感的激光-MIG复合焊熔透闭环控制 |
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| 引用本文： | 双元卿,陈武柱,王康建,单际国,张永强. 基于视觉传感的激光-MIG复合焊熔透闭环控制[J]. 清华大学学报(自然科学版), 2008, 48(11) |
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| 作者姓名： | 双元卿 陈武柱 王康建 单际国 张永强 |
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| 作者单位： | 1. 清华大学,机械工程系,先进成形制造教育部重点实验室,北京,100084
2. 首钢技术研究院,北京,100041 |
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| 基金项目： | 国家自然科学基金 |
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| 摘 要： | 在对接焊中,坡口同隙的波动会导致焊接熔透状态的变化,为保证稳定的熔透,需要对焊接熔透状态进行实时检测和控制.针对CO2激光-MIG复合对接焊,建立了基于视觉传感和DSP的熔透状态实时检测与控制系统,获取了清晰的熔池背面图像,经过适当的处理得到了熔池背面熔宽的信息,并通过调节焊接速度或控制电弧电流,对熔透状态进行了控制.结果表明:即使在间隙明显波动的情况下也获得了熔透可靠、背面熔宽均匀的焊缝,从而实现了复合对接焊熔透状态的闭环控制.
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| 关 键 词： | 激光-MIG复合焊 熔透状态 视觉检测 闭环控制 |
Vision system for closed-loop control of the penetration in laser-MIG hybrid welding |
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| SHUANG Yuanqing,CHEN Wuzhu,WANG Kangjian,SHAN Jiguo,ZHANG Yongqiang. Vision system for closed-loop control of the penetration in laser-MIG hybrid welding[J]. Journal of Tsinghua University(Science and Technology), 2008, 48(11) |
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| Authors: | SHUANG Yuanqing CHEN Wuzhu WANG Kangjian SHAN Jiguo ZHANG Yongqiang |
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| Affiliation: | SHUANG Yuanqing1,CHEN Wuzhu1,WANG Kangjian1,SHAN Jiguo1,ZHANG Yongqiang2(1.Key Laboratory for Advanced Materials Processing Technology of Ministry of Education,Department of Mechanical Engineering,Tsinghua University,Beijing 100084,China,2.Shougang Technical Research Institute,Beijing 100041,China) |
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| Abstract: | 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 CO2 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 control... |
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| Keywords: | laser-MIG hybrid welding penetration status vision detection closed-loop control |
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