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CO2 短路过渡焊机一元化控制是通过单旋钮将影响短路过渡频率的主要规范参数电弧电压和焊接电流有机结合在一起 ,通过单旋钮调节焊接电流 ,电弧电压随电流相应变化 ,形成最佳匹配而获得最高短路过渡频率。但由于CO2 短路过渡过程目前尚难以用精确数学模型来描述 ,所以通过一般控制方法所实现的一元化控制并未真正实现单旋钮调节。针对这一不足 ,研究了一种以 16位 80C196KC数字单片机为核心器件通过软件方式实现的CO2 短路过渡焊电弧电压自寻优模糊控制系统。系统以操作者所选择的焊接电流为唯一设定参数 ,自动对电弧电压进行以实现最高短路频率为目标的自寻优 ,可使此类焊机实现真正单旋钮调节为特征的一元化控制
CO2 short-circuit transition welding unitary control is through a single knob will affect the short-circuit transition frequency of the main normative parameters of the arc voltage and welding current organically together, by a single knob to adjust the welding current, the arc voltage corresponding to the current changes to form the best match obtained The maximum short-circuit transition frequency. However, due to the fact that the CO2 short-circuit transition process is currently difficult to describe with an accurate mathematical model, the unified control achieved by the general control method has not really realized single-knob adjustment. To solve this problem, this paper studies a self-optimizing fuzzy control system for CO2 short-circuit transition welding arc voltage by using 16-bit 80C196KC digital microcontroller as the core device. The system self-optimizes the arc voltage to achieve the highest short-circuit frequency with the welding current selected by the operator as the only setting parameter, allowing this type of welder to be truly unitized with one-knob adjustment