本文用参数变异法给出串激直流电动机在不同转速情况下的运动方程的解析解，以拓宽人们分析这类问题的思路。
In this paper, parametric variation method is used in kinematic equation of series excitation direct current motor with different turning velocities.
蓄电池式电机车是煤矿井下一种主要的运输装置，目前主要采用串激直流电动机驱动。
Battery electrical locomotive is a main transportation equipment in the well of colliery, which is drived by series-excitation DC electromotor mostly at the present time.
蓄电池式电机车是煤矿井下一种主要的运输装置，目前主要采用串激直流电动机驱动。
Battery electrical locomotive is a main transportation equipment in the well of colliery, which is drived by series-excitation DC electromotor mostly at the present time.
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