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本发明是关于电弧焊接过程自动调节的,可以在自动电孤焊机送丝机构中使用。发明的目的是通过提高调节精度和调节快速功作改善焊接质量。根据焊接电孤长度自动调节方能把电弧电压与给定电压相比较,得到的失配信号进行积分,再与电弧电压值总合起来,送丝速度按此总合的比例调节,在失调信号增大时减少积分时间的常数值,而失调信号减少时,增加积分时间的常数值。由于积分器的输入电阻根据向电阻输入的失配量改变其电阻值,而改变传送系数值(或积分时间常数)。这时,如果失配量按绝对值增加,则积分器输出电阻
The invention is automatically adjusted on the arc welding process and can be used in the automatic arc welding machine wire feeding mechanism. The object of the invention is to improve the welding quality by increasing the adjustment precision and adjusting the quick work. According to the automatic adjustment of the length of the soldering soldering arc voltage can only be compared with a given voltage, the resulting mismatch signal is integrated, and then with the arc voltage value together, wire feeding speed adjusted according to the proportion of the total, the offset signal Increasing decreases the constant value of integration time, and decreases the offset signal, increasing the constant value of integration time. The value of the transfer coefficient (or integral time constant) changes as the integrator’s input resistance changes its resistance according to the mismatch input to the resistor. At this time, if the mismatch amount increases in absolute value, the integrator outputs the resistance