This article introduces DSP controlled CO 2 welding short-circuit process control system,short-circuit waveform control method and arc waveform control with PI arthmetic,also it gives welding current and voltage waveforms .

• 介绍了数字信号处理器(DSP)控制CO2焊短路过渡控制系统,DSP软件进行短路波形控制方案和燃弧波形控制的PI算法,给出了软件控制的焊接电流、电压波形。