The resolving Procedures represented by resolving set-integrator circuit and equivalent speed loop regulating circuit of double close oop SCR-D system.
以给定积分器电路和双闭环晶闸管供电直流调速系统中等效速度环调节回路为例，说明求解过程。
The original K - F - D system was replaced by SCR - D system for main transmission, while PLC was substituted for the original relay contactor control mede.
即主传动系统由SCR-D取代原K-F-D系统，电控部分用可编程序控制器PLC取代原继电器-接触器控制方式。
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