| 摘要: |
| 采用代数迭代重建算法(ART)来恢复焊接电弧等离子体发射系数.开发了ART算法的MATLAB语言计算程序,并通过一个已知的偏置高斯模型验证了该算法的有效性.以一个TIG焊接电弧为例,图像法测量得到电弧光谱强度,利用所开发的ART算法程序重建了发射系数,并将计算结果与常用的Abel逆变换恢复的发射系数进行了比较.结果表明,ART算法的重建精度较高,可用于焊接电弧发射系数的恢复. |
| 关键词: 焊接电弧 光谱诊断 发射系数 ART算法 |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金资助项目(50675046,50775053) |
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| Reconstruction of emission coefficients for welding arc based on iterative algorithm |
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XIONG Jun, ZHANG Guangjun, HU Yutang
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State Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China
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| Abstract: |
| This investigation attempted to retrieve the emission coefficients of welding arc by an algebraic reconstruction technique(ART).The ART algorithm was programmed with MATLAB language,and a displaced Gaussian model was used to validate the efficiency of the program.The intensities of a free burning arc were acquired by the imaging method.The emission coefficients were reconstructed by the developed ART program,and the results were compared to that reconstructed by the extensively used Abel inversion.The results show that the ART algorithm has a high precision and can be used for the reconstruction of emission coefficients of welding arc. |
| Key words: welding arc spectroscopic diagnosis emission coefficient ART algorithm |
