| 基于由阴影恢复形状法的焊接熔池表面高度获取 |
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| 引用本文： | 李来平,林涛,陈善本,杨学勤. 基于由阴影恢复形状法的焊接熔池表面高度获取[J]. 上海交通大学学报, 2006, 40(6): 898-901 |
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| 作者姓名： | 李来平 林涛 陈善本 杨学勤 |
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| 作者单位： | 上海交通大学,焊接工程研究所,上海,200030;上海航天精密机械研究所,上海,201600;上海交通大学,焊接工程研究所,上海,200030;上海航天精密机械研究所,上海,201600 |
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| 摘 要： | 在Lee-Kuo通用反射图模型的基础上,提出了变因子反射图方程求解方法,采用超松弛方法从实际成像条件下的合成图像中计算出球面的高度.分析了焊接过程中的成像特点,得到了铝合金焊接熔池表面的反射图模型,并针对焊接熔池边缘不光滑特点,提出了实际表面光滑约束条件,计算了铝合金非熔化极气体保护焊(GTAW)熔池表面高度.结果表明,计算结果能够反映熔池的下塌趋势.
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| 关 键 词： | 由阴影恢复形状 反射图模型 铝合金熔池 表面高度 |
| 文章编号： | 1006-2467(2006)06-0898-04 |
| 收稿时间： | 2005-04-02 |
| 修稿时间： | 2005-04-02 |
The Surface Height Acquisition of Welding Pool Based on Shape from Shading (SFS) |
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| LI Lai-ping,LIN Tao,CHEN Shan-ben,YANG Xue-qin. The Surface Height Acquisition of Welding Pool Based on Shape from Shading (SFS)[J]. Journal of Shanghai Jiaotong University, 2006, 40(6): 898-901 |
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| Authors: | LI Lai-ping LIN Tao CHEN Shan-ben YANG Xue-qin |
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| Affiliation: | 1. Inst. of Welding Eng. , Shanghai Jiaotong Univ. , Shanghai 200030, China; 2. Shanghai Spaceflight Precision Mechanism Inst. , Shanghai 201600 |
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| Abstract: | Based on the general reflectance map model proposed by Lee and Kuo,the height of sphere was calculated by the successive overrelaxation(SOR) method and variable factor method from the synthetic image under the real condition.Based on the analysis of the imaging characteristic,the reflectance map model of welding pool surface of aluminum alloy was set up.In view of the undulation of welding pool edge,the smoothness constraint of welding pool surface was proposed.The surface height of aluminum(alloy) welding pool was calculated and analyzed.The result shows that the calculation can indicate the trend of aluminum welding pool. |
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| Keywords: | shape from shading(SFS) reflectance map model aluminum alloy welding pool surface height |
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