The resonant soft switching inverter arc welding power source uses LCL type structure in the main circuit, and selects phaseshifting pulse wide modulation technique in the control system.
研制的谐振式软开关弧焊逆变电源，主电路采用新型LCL结构，控制系统选用恒频移相调脉宽控制方案。
2
Phase shift error is inevitable in the course of getting modulation value of 3-d measurement with phaseshifting technology, and then decreases measurement precision.