| GMAW熔滴过渡过程稳定性自相关分析 |
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| 引用本文： | 鲍爱莲,耿正,刘万辉.GMAW熔滴过渡过程稳定性自相关分析[J].焊接学报,2008,29(1):77-80. |
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| 作者姓名： | 鲍爱莲 耿正 刘万辉 |
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| 作者单位： | 黑龙江科技学院,材料科学与工程学院,哈尔滨,150027;哈尔滨工业大学,现代焊接生产技术国家重点实验室,哈尔滨,150001 |
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| 基金项目： | 黑龙江科技学院资助项目 |
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| 摘 要： | 检测了熔化极气体保护焊(GMAW)中焊接电流和电弧电压大小等参数特征,利用数字信号分析与处理中的时域自相关特性原理,分析GMAW熔滴过渡过程的稳定性与参数关系,判断焊接电流和电压是否具有周期性.阐述焊接电弧系统中,电流自身、电压自身及电流和电压相互的变化存在相互关联,并对焊接电流和电压信号进行自相关分析,获得信号时域的周期和方差等特征信息,直观地反映出弧焊过程与熔滴过渡过程的稳定性.
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| 关 键 词： | 熔化极气体保护焊 熔滴过渡 自相关 稳定性 |
| 文章编号： | 0253-360X（2008）01-0077-04 |
| 收稿时间： | 2007-04-24 |
| 修稿时间： | 2007年4月24日 |
Analysis of stability in droplet transfer process of GMAW based on self-correlation |
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| BAO Ailian,GENG Zheng and LIU Wanhui.Analysis of stability in droplet transfer process of GMAW based on self-correlation[J].Transactions of The China Welding Institution,2008,29(1):77-80. |
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| Authors: | BAO Ailian GENG Zheng and LIU Wanhui |
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| Affiliation: | School of Materials Science and Engineering, Heilongjiang Institute of Science and Technology, Harbin 150027, China,National Key Laboratory of Advanced Welding Production & Technology, Harbin Institute of Technology, Harbin 150001, China and School of Materials Science and Engineering, Heilongjiang Institute of Science and Technology, Harbin 150027, China |
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| Abstract: | Self-correlation analysis is an important analyzing method in signal analysis and processing.Some welding parameters attribute values, such as current, voltage etc, were acquisited in GMAW (gas metal arc welding)process.The stability of droplet transfer process in GMAW and welding parameter were studied.Using time domain self-correlation character principle in digital signal analysis and processing, periodic property of welding current and voltage were identified.Through the acquired signal time domain periodic property, the stability of droplet transfer process in GMAW can be visually reflected |
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| Keywords: | gas metal arc welding droplet transfer selfcorrelation analysis stability |
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