| 基于最小二乘法的脉冲MIG焊参数一元化调节 |
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| 引用本文： | 薛家祥,姜乘风,张晓莉,朱晓军,朱强. 基于最小二乘法的脉冲MIG焊参数一元化调节[J]. 焊接学报, 2014, 35(8): 75-78 |
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| 作者姓名： | 薛家祥 姜乘风 张晓莉 朱晓军 朱强 |
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| 作者单位： | 1.华南理工大学机械与汽车工程学院, 广州 510640 |
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| 基金项目： | 黄埔区科技计划资助项目(201341);广东省科技计划资助项目(2010B010700001);佛山市科技计划资助项目(2011AA100175) |
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| 摘 要： | 针对数字化焊机焊接参数复杂繁琐,不易于实现大规模工艺试验的特点,提出了一种基于最小二乘法的脉冲MIG焊参数一元化调节方法.该方法利用经工艺试验得到的大步距标定的焊接电流与各种焊接参数的拟合关系,得到最佳的拟合曲线,充分利用了所有的经试验得到的理想数据,并且容易实现软件编程,算法简便,可快速实现大范围内对焊接参数的连续调节.通过对单脉冲、双脉冲焊接参数的拟合处理并且进行试焊,焊接过程稳定,能够得到成形美观、飞溅较少、鱼鳞纹清晰的焊缝.结果表明,该拟合方法稳定、可靠、可行.
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| 关 键 词： | 最小二乘法 曲线拟合 一元化调节 数字化焊机 |
| 收稿时间： | 2013-08-10 |
Research on unified adjustment of pulsed MIG welding parameters based on least squares method |
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| XUE Jiaxiang,JIANG Chengfeng,ZHANG Xiaoli,ZHU Xiaojun and ZHU Qiang. Research on unified adjustment of pulsed MIG welding parameters based on least squares method[J]. Transactions of The China Welding Institution, 2014, 35(8): 75-78 |
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| Authors: | XUE Jiaxiang JIANG Chengfeng ZHANG Xiaoli ZHU Xiaojun ZHU Qiang |
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| Affiliation: | 1.Shool of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China2.Shool of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China;College of Mechanical and Electrical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China |
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| Abstract: | In view of the sophisticated welding parameters of digital welding machine, large-scale technology experiments are difficult to be conducted. A unified pulsed MIG welding parameters adjusting technology based on least squares method has been proposed in this paper. The optimized fitting curve is achieved and the full advantage of the ideal data that generated in the experiments is utilized by applying a fitting relationship, which obtained through technology experiment, between the large-step welding current and other welding parameters. Besides, easier software program with simple algorithm is realized as well as a wide range of continuous adjustment of the welding parameters. Experiments are conducted after the fitting of singlepulse, double-pulse welding parameters. The experiments results indicate that the welding process is stable to obtain clear fishscale welding seam with uniformed appearance and fewer spatters. Thus, good stability, reliability and feasibility of the proposed method are well approved. |
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| Keywords: | least squares method curve fitting unified adjustment digital welder |
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