短路过渡CO_2焊的数字化波形控制研究

Study on Digital Waveform Control of CO_2 Welding in Short-circuit Process

论述了一种电流波形控制的逆变CO2焊接电源,包括电流波形控制方案、系统构成等。该系统根据CO2焊短路过渡特点,对焊接电流进行较为精确的控制,并给出了该系统实际施焊时的电流电压波形。试验结果表明,该CO2焊机系统电路简单、调试方便;具有良好的控制性能。

CO2 welding inverter with waveform control was expounded, in which the current waveform control scheme and the structure of the system were introduced. According to the character of short-circuit transfer, the welding current was accurately controlled by this system, and the real welding voltage and current waveform was given. The result shows that, besides its simple structure and easy operation, the system has good controlling performance.