| Approximate entropy a new statistic to quantify arc and welding process stability in short-circuiting gas metal arc welding |
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| 作者姓名： | 曹彪 向远鹏 吕小青 曾敏 黄石生 |
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| 作者单位： | College of Mechanical Engineering, South China University
of
Technology, Guangzhou 510641, China;College of Mechanical Engineering, South China University
of
Technology, Guangzhou 510641, China;College of Mechanical Engineering, South China University
of
Technology, Guangzhou 510641, China;College of Mechanical Engineering, South China University
of
Technology, Guangzhou 510641, China;College of Mechanical Engineering, South China University
of
Technology, Guangzhou 510641, China |
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| 基金项目： | Project supported by the National
Natural Science Foundation of
China (Grant Nos 50375053 and 50575077). |
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| 摘 要： | Based on the phase state reconstruction of welding current in short-circuiting gas metal arc welding using carbon dioxide as shielding gas, the approximate entropy of welding current as well as its standard deviation has been calculated and analysed to investigate their relation with the stability of electric arc and welding process. The extensive experimental and calculated results show that the approximate entropy of welding current is significantly and positively correlated with arc and welding process stability, whereas its standard deviation is correlated with them negatively. A larger approximate entropy and a smaller standard deviation imply a more stable arc and welding process, and vice versa. As a result, the approximate entropy of welding current promises well in assessing and quantifying the stability of electric arc and welding process in short-circuiting gas metal arc welding.
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| 关 键 词： | 近似熵 焊接电流 电弧 焊接稳定性 |
| 收稿时间： | 2006-12-15 |
| 修稿时间： | 2007-09-17 |
Approximate entropy---a new statistic to quantify arc and welding process stability in short-circuiting gas metal arc welding |
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| Cao Biao, Xiang Yuan-Peng, Lu Xiao-Qing, Zeng Min, Huang Shi-Sheng.Approximate entropy a new statistic to quantify arc and welding process stability in short-circuiting gas metal arc welding[J].Chinese Physics B,2008,17(3):865-877. |
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| Authors: | Cao Biao Xiang Yuan-Peng Lu Xiao-Qing Zeng Min Huang Shi-Sheng |
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| Institution: | College of Mechanical Engineering, South China University
of
Technology, Guangzhou 510641, China |
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| Abstract: | Based on the phase state reconstruction of welding current in
short-circuiting gas metal arc welding using carbon dioxide as
shielding gas, the approximate entropy of welding current as well as
its standard deviation has been calculated and analysed to
investigate their relation with the stability of electric arc and
welding process. The extensive experimental and calculated results
show that the approximate entropy of welding current is
significantly and positively correlated with arc and welding process
stability, whereas its standard deviation is correlated with them
negatively. A larger approximate entropy and a smaller standard
deviation imply a more stable arc and welding process, and vice
versa. As a result, the approximate entropy of welding current
promises well in assessing and quantifying the stability of electric
arc and welding process in short-circuiting gas metal arc welding. |
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| Keywords: | approximate entropy welding
current arc and welding process stability |
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