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题名: A laser back-lighting based metal transfer monitoring system for robotic gas metal arc welding
作者: Wang ZZ(王振洲)
作者部门: 机器人学研究室
关键词: GMAW ; Modeling ; Image analysis ; Machine vision ; Threshold selection ; Segmentation
刊名: Robotics and Computer-Integrated Manufacturing
ISSN号: 0736-5845
出版日期: 2016
卷号: 38, 页码:52-66
收录类别: SCI ; EI
产权排序: 1
摘要: Gas metal arc welding (GMAW) can be considered the most widely used process in automated welding due to its high productivity. However, its solid to liquid metal transfer also complicates the process and causes fumes and spatters. It needs to be better understood and controlled for assured weld quality, improved process stability, and reduced fumes, spatters, and energy consumption. For automated robotic gas metal arc welding, automatic and efficient image processing algorithms are required to extract the metal transfer robustly. In addition, the machine vision apparatus in real welding environments should be compact and easy to handle. To this end, a simplified laser back-lighting based monitoring system is proposed to measure the metal transfer in this paper. To facilitate the image analysis, the arc light and the image are modeled based on the physical laws. A double-threshold method is proposed to segment the image robustly with a linear membership assigned to the fuzzy edge region. To compute the two thresholds accurately and simultaneously, slope difference is calculated for the histogram distribution and the gray-scale positions with the largest and second largest peaks are selected as the two thresholds respectively. Experimental results verified the effectiveness of the on line monitoring system and the subsequent automatic image processing methods. © 2015 Elsevier Ltd.All rights reserved.
语种: 英语
WOS记录号: WOS:000367275200006
WOS标题词: Science & Technology ; Technology
类目[WOS]: Computer Science, Interdisciplinary Applications ; Engineering, Manufacturing ; Robotics
关键词[WOS]: SELECTION ; GMAW ; HISTOGRAM
研究领域[WOS]: Computer Science ; Engineering ; Robotics
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内容类型: 期刊论文
URI标识: http://ir.sia.cn/handle/173321/17142
Appears in Collections:机器人学研究室_期刊论文

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Recommended Citation:
Wang ZZ. A laser back-lighting based metal transfer monitoring system for robotic gas metal arc welding[J]. Robotics and Computer-Integrated Manufacturing,2016,38:52-66.
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文件名: A laser back-lighting based metal transfer monitoring system for robotic gas metal arc welding.pdf
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