| GMAW-P频率特性复合弧长适应控制法 |
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| 引用本文： | 华学明,李芳,陆志强,吴毅雄.GMAW-P频率特性复合弧长适应控制法[J].焊接学报,2009,30(10):53-56. |
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| 作者姓名： | 华学明 李芳 陆志强 吴毅雄 |
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| 作者单位： | 1. 上海交通大学上海市激光制造与材料表面改性重点实验室,上海,200240
2. 上海交通大学上海市激光制造与材料表面改性重点实验室,上海,200240;上海交通大学金属基复合材料国家重点实验室,上海,200240 |
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| 摘 要： | 为了提高GMAW-P焊接弧长控制的调节速度,减少弧长调节过程中脉冲频率、焊接电流的波动范围,提出了基于DSP数字控制脉冲熔化极气体保护焊接电源采用频率一特性复合弧长适应控制法.在焊接过程中通过实时采集电弧电压信号、焊接电流信号,当弧长发生扰动时,在当前脉冲周期内,以基值时间和给定电压为控制量,从而保证在弧长调节过程中脉冲频率的变化较小.台阶试验和爬坡试验表明,此控制方法的弧长调节过程快速、稳定,焊接电流、脉冲频率波动范围小,焊机具有良好的弧长调节性能.
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| 关 键 词： | 脉冲熔化极气体保护焊 弧长控制 焊接电源 |
| 收稿时间： | 2008/7/14 0:00:00 |
Frequency-character combine control method of arc length adjustment of GMAW-P |
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| HUA Xuemin,LI Fang,LU Zhiqiang and WU Yixiong.Frequency-character combine control method of arc length adjustment of GMAW-P[J].Transactions of The China Welding Institution,2009,30(10):53-56. |
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| Authors: | HUA Xuemin LI Fang LU Zhiqiang and WU Yixiong |
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| Affiliation: | Shanghai Key Laboratory of Materials Laser Processing and Modification, Shanghai Jiaotong University, Shanghai 200240, China,Shanghai Key Laboratory of Materials Laser Processing and Modification, Shanghai Jiaotong University, Shanghai 200240, China,Shanghai Key Laboratory of Materials Laser Processing and Modification, Shanghai Jiaotong University, Shanghai 200240, China and Shanghai Key Laboratory of Materials Laser Processing and Modification, Shanghai Jiaotong University, Shanghai 200240, China;State Key Laboratory of Metal Matrix Composite, Shanghai Jiaotong University, Shanghai, 200240, China |
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| Abstract: | In order to decrease fluctuating of pulse frequency and welding current while adjusting arc length, the frequency-character combine controller of arc length adjustment was researched and designed in GMAW-P welding machine based on digital signal process controlling.Base time and welding voltage setting were used as controlling variables in order to ensure pulse frequency within small change during arc length adjustment.The experiments show that this control method of arc length adjustment has the characteristics of fast adjusting and good stability;welding current, pulse frequency can change smaller when arc length is disturbed. |
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| Keywords: | pulse gas metal arc welding arc length control welding machine |
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