| 短路过渡电弧焊电流信号的近似熵分析 |
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| 引用本文： | 曹彪,吕小青,曾敏,王振民,黄石生.短路过渡电弧焊电流信号的近似熵分析[J].物理学报,2006,55(4):1696-1705. |
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| 作者姓名： | 曹彪 吕小青 曾敏 王振民 黄石生 |
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| 作者单位： | 华南理工大学机械工程学院，广州 510640 |
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| 摘 要： | 依据近似熵的理论和算法，从非线性角度对纯CO2保护气体条件下短路过渡电弧焊的电流信号进行了近似熵分析.通过对不同的送丝速度、给定电压及气体流量下电流信号的近似熵计算和比较，表明近似熵可以作为短路过渡稳定性的评判标准.近似熵越大，波动越小，焊接过程就越稳定.
关键词：
非线性
近似熵
短路过渡
稳定性
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| 关 键 词： | 非线性 近似熵 短路过渡 稳定性 |
| 收稿时间： | 8/8/2005 12:00:00 AM |
| 修稿时间： | 2005-08-082005-10-26 |
Approximate entropy analysis of current in short-circuiting arc welding |
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| Cao Biao,Lü Xiao-Qing,Zeng Min,Wang Zhen-Min,Huang Shi-Sheng.Approximate entropy analysis of current in short-circuiting arc welding[J].Acta Physica Sinica,2006,55(4):1696-1705. |
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| Authors: | Cao Biao Lü Xiao-Qing Zeng Min Wang Zhen-Min Huang Shi-Sheng |
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| Institution: | College of Mechanical Engineering, South China University of Technology, Guangzhou 510640, China |
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| Abstract: | Based on the approximate entropy theory and related algorithm, approximate entropy analysis of current in short-circuiting arc welding in CO2 shielding gas are performed from the point of view of nonlinear time sequences. Calculation and comparison of approximate entropy of current under different wire-feeding speeds, setting voltages and different gas flow rates show that approximate entropy of current can be taken as a creterion of stability of short-circuiting transfer. The results show that greater approximate entropy and less fluctuation indicate a more stable welding process. |
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| Keywords: | nonlinear approximate entropy short-circuiting transfer stability |
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