数字化CO_2焊逆变焊机送丝及接口电路设计研究

Research of Feeder and Interface Circuit for Digital CO_2 Arc Welding Inverter Power Supply

在数字化CO2焊机研究中,需要解决送丝接口电路的设计问题。基于一元化控制的要求,完成了一种以脉冲调制芯片TL494为控制核心的斩波送丝电路,并为其设计了与数字化CO2弧焊逆变主控电路的接口电路。该送丝电路符合模块化的电路设计思想,能够较好的与数字化主控电路实现同步。

In the development of digital CO2 arc welding machine,the wire feeder and its interface must be properly designed.In accordance with the strategy of one-knob control,a TL494 PWM IC based chopper circuit for the wire feeder is proposed,and the interface circuit with the main digital control circuit is designed as well.The feeder circuit meets the demands of modular structure,and it can meet the needs in synchronism with the main control circuit.