| 脉冲熔化极气体保护焊熔滴过渡电信号特征及建模 |
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| 引用本文： | 李芳,华学明,王卫彬,吴毅雄. 脉冲熔化极气体保护焊熔滴过渡电信号特征及建模[J]. 焊接学报, 2009, 30(7): 97-100 |
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| 作者姓名： | 李芳 华学明 王卫彬 吴毅雄 |
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| 作者单位： | 上海交通大学材料科学与工程学院上海市激光制造与材料改性重点实验室,上海,200240;上海交通大学材料科学与工程学院上海市激光制造与材料改性重点实验室,上海,200240;上海交通大学材料科学与工程学院上海市激光制造与材料改性重点实验室,上海,200240;上海交通大学材料科学与工程学院上海市激光制造与材料改性重点实验室,上海,200240 |
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| 摘 要： | 脉冲熔化极气体保护焊(GMAW-P)熔滴过渡形式对焊接质量有着重要的影响,同时脉冲参数是影响GMAW-P熔滴过渡行为的主要参数.利用高速数字摄像技术,记录熔滴过渡过程,同时采集焊接过程的电流、电压信号,并将各个信息传输到PC机中,实现数据的保存.综合分析熔滴过渡图片与对应的电信号的关系,提取了GMAW-P熔滴过渡过程特征电信号.通过统计分析建立了GMAW-P熔滴过渡逻辑回归模型.结果表明,此模型预测熔滴过渡的正确率达93%,为实现一脉一滴最佳脉冲熔滴过渡形式闭环控制开辟了新的途径.Abstract：Metal droplet transfer mode which is influenced by the pulse parameters such as pulse current ( I_p ) , pulse time ( t_p ) , base current ( I_b ) and pulse frequency (f) has play an important role in the weld quality. An experimental system based on the Lab VIEW virtual instrument and high speed photography technology was developed to sample the transient electrical parameters and record the images of droplet transfer process simultaneously. A transition voltage U_(dd) in the pulse voltage drop edge of electrical waveform was discovered according to analysis of synchronous electric and image signals. The relationship between the metal transfer mode and the slope of the transition voltage was proposed. The result of experiments shows that the model can be used in closed-loop controlling of one droplet per pulse transfer mode and also can help for optimizing the welding parameters.
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| 关 键 词： | 脉冲熔化极气体保护焊 熔滴过渡 高速摄像 同步采集 逻辑回归 |
| 收稿时间： | 2008-06-19 |
Modeling of droplet transfer electrical characteristics in pulsed gas melted arc welding |
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| LI Fang,HUA Xueming,WANG Weibin and WU Yixiong. Modeling of droplet transfer electrical characteristics in pulsed gas melted arc welding[J]. Transactions of The China Welding Institution, 2009, 30(7): 97-100 |
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| Authors: | LI Fang HUA Xueming WANG Weibin WU Yixiong |
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| Affiliation: | School of Materials Science and Engineering, Shanghai Key Laboratory of Materials Laser Processing and Modification, Shanghai Jiaotong University, Shanghai 200240, China,School of Materials Science and Engineering, Shanghai Key Laboratory of Materials Laser Processing and Modification, Shanghai Jiaotong University, Shanghai 200240, China,School of Materials Science and Engineering, Shanghai Key Laboratory of Materials Laser Processing and Modification, Shanghai Jiaotong University, Shanghai 200240, China and School of Materials Science and Engineering, Shanghai Key Laboratory of Materials Laser Processing and Modification, Shanghai Jiaotong University, Shanghai 200240, China |
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| Abstract: | Metal droplet transfer mode which is influenced by the pulse parameters such as pulse current ( I_p ) , pulse time ( t_p ) , base current ( I_b ) and pulse frequency (f) has play an important role in the weld quality. An experimental system based on the Lab VIEW virtual instrument and high speed photography technology was developed to sample the transient electrical parameters and record the images of droplet transfer process simultaneously. A transition voltage U_(dd) in the pulse voltage drop edge of electrical waveform was discovered according to analysis of synchronous electric and image signals. The relationship between the metal transfer mode and the slope of the transition voltage was proposed. The result of experiments shows that the model can be used in closed-loop controlling of one droplet per pulse transfer mode and also can help for optimizing the welding parameters. |
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| Keywords: | pulsed gas metal arc welding droplet transfer high speed photography synchronous sample logistic regression |
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