在此基础上，根据电梯起停频繁的特点，利用直流母线电压变化率推导出起动时刻理想初始参数和在输入功率变化时的前馈调节量，提高了系统的快速性。
On this foundation, in view of features that the elevator starts and stops frequently, the ideal starting time parameter and the value of feed forward adjustment when input power .
自动机工作过程中要求供弹系统具备快速和频繁的起停能力。
Ammunition feeding system must have the capability of stopping and starting quickly and frequently during the operation process of the automatic mechanism.
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