光谱控制的逆变脉冲MIG焊电源及控制系统

根据脉冲MIG焊熔滴过渡光谱控制法的特点，首次研制了一台符合该控制器法要求的逆变式脉冲MIG焊电源及其控制系统。该电源采用IGBT双单端正激式逆变电路，控制系统以具有较强数据处理能力的8098单片机为控制核心并与焊接电流的PWM控制相结合，控制信号是采自反映熔滴过渡的电弧光谱信号。试验证明，所设计的电源和控制系统具有迅速采集和处理光谱信号、切换迅速、电源动特性好、参数在线调节方便等优点，实现了1峰0基的熔滴过渡的控制目标，为脉冲MIG焊光谱控制法的焊接试验研究奠定了坚实的基础。

Pulsed MIG Welding Inverter Power Source by Spectral and Control System

According to the character about spectral control of droplet transfer in pulsed MIC welding, a pulsed MIG welding inverter power source with the IGBT double single end positive exited inverting circuit and its control unit are developed. The control unit takes 8098 singlechip computer to be able to quickly process spectral data as control center and the control center is connected with PWM control of welding current.Its control signal comes from a kind of are spectral signal reflecting droplet transfer. The experiments show that the power source and its control unit have the function,such as quickly collecting and processing spectral signal, good dynamic characteristic and easily on line adjusting parameter. It has realized the control aim of 1 peak 0 base droplet transfer and becomes good base of the next test of spectrum control method of droplet transfer in pulsed MIG welding.