The image subtracting method and the point to arc projection extremum algorithm can derive the pointer and scale marks quickly, and separate the long and short graduation line.
基于差分图像确定投影原点的点弧线投影极值新算法，可快速获取仪表指针和分度线参数，且能区分分度线长短。
Base on IGBT inverter for arc welding, a new current wave form control method is put forward in this paper which is special for process of short circuit transfer for CO2 arc welding.
本文针对IGBT弧焊逆变器，提出并实现了适于短路过渡CO_2气体保护焊的输出波形控制方法。
Base on IGBT inverter for arc welding, a new current wave form control method is put forward in this paper which is special for process of short circuit transfer for CO2 arc welding.
本文针对IGBT弧焊逆变器，提出并实现了适于短路过渡CO_2气体保护焊的输出波形控制方法。
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