半自动CO_2焊焊接电流的自校正控制  

Self-Adjusting Control on Semi-Auto CO_2 Welding Power Source

作　　者：游少鹏[1] 范林睿 

机构地区：[1]成都科技大学,610061 [2]新兴仪器厂,成都610051

出　　处：《电焊机》1992年第1期19-22,共4页Electric Welding Machine

摘　　要：本文依据熔化极电弧焊的等熔化曲线方程和送丝系统的数学模型建立了以焊接电压和送丝速度控制量为输入时,以焊接电流为输出量的系统模型,用二次型性能指标函数设计出了自校正控制器,通过控制送丝速度,获得了较好的恒流焊接效果。实验结果表明,该方法能建立稳定的焊接过程,焊接电流误差小,焊缝熔深均匀。Based on the formula of equal melt curve in melt arc welding and mathematical model of the wire feeder system, the system model with welding voltage and wire feed speed in put and welding current out put is set up. The self adjusting control unit is developed according to the quadratic form target function. Through wire feed speed control, the stable welding current can be got. The experimen expresses that the stable welding prosscess can be set, the welding current difference is less and the weld penertration is good.

关 键 词：自校正控制 变速送丝 气体保护焊 

分 类 号：TG444.73[金属学及工艺—焊接]