基于模糊自整定参数PID控制的铝合金薄板脉冲MIG焊  

Pulsed MIG welding of aluminum alloy sheet based on fuzzy self-tuning PID control

作　　者：张晓莉[1,2] 李钰桢 龙鹏[1] 薛家祥[1] 

机构地区：[1]华南理工大学机械与汽车工程学院,广州510640 [2]江西理工大学机电工程学院,赣州341000

出　　处：《焊接学报》2013年第11期83-87,117,共5页Transactions of The China Welding Institution

基　　金：广东省特派员工作站资助项目(2010B090500008);佛山市科技计划资助项目(2011AA100175);黄埔区科技计划资助项目(201341)

摘　　要：针对铝合金薄板脉冲MIG焊,提出了一种比例积分微分(proportion integral derivative,PID)参数模糊自整定控制方法,文中介绍了其原理及设计思路,将模糊逻辑控制器引入已建立的PID控制器的Simulink仿真模型,实现了PID参数模糊自调节,并进行了输入适应性对比试验和抗干扰试验分析,表明PID参数模糊自整定控制器在输入适应性和抗干扰方面更胜一筹,能进一步提高弧焊电源性能.最后对铝合金1 mm薄板进行了传统PID控制和模糊自整定参数PID控制焊接试验对比.结果表明,该方法焊缝光亮、飞溅少、焊接过程比较平稳,可获得较好的焊缝质量和稳定的焊接过程.A fuzzy self-tuning PID control method was proposed for pulsed MIG welding of aluminum alloy sheet. The principle and design ideas were introduced. Fuzzy self-tuning PID parameter was implemented by introducing the fuzzy logic controller into the established Simulink model of PID controller. Then input adaptability experiment contrast and anti-interference test were conducted and analyzed. It shows that fuzzy self-tuning controller in input adaptability and anti-interference is better and the arc welding power performance can be further improved. Finally the contrast of welding experiments on 1 mm thickness aluminum alloy between traditional PID control and fuzzy self-tuning parameter PID control were carried out. The experiments result shows that high welding quality and stable welding process with good weld seam,less welding spatter,relatively smooth welding process are achieved by the proposed method.

关 键 词：铝合金薄板 PID控制 模糊自整定 MIG焊 

分 类 号：TG115.28[金属学及工艺—物理冶金]