前者在常规的采用电压外环、电流内环的双闭环控制基础上，搭建数字锁相环、数字滤波器。

Digital PLL and digital filter are built based on conventional double closed-loop control which contains voltage loop and current loop.

youdao

前者在常规的采用电压外环、电流内环的双闭环控制基础上，搭建数字锁相环、数字滤波器。

Digital PLL and digital filter are built based on conventional double closed-loop control which contains voltage loop and current loop.

youdao