按照系统的技术要求，基于PID控制原理搭建自动喂料和电动闸距闭环控制模型。
According to the technological requirements, the closed loop control system models of automatic feeding and dynamoelectric control gap are built based on PID control principle.
同时，由于动触头的运动轨迹都是一样的，不管是在分闸时还是在斥开时，都可以达到最大开距。
Simultaneously, as the moving tracks of the movable contact are the same, the maximum contact distance can be reached no matter when in breaking or in repulsion.
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