unsteady pulse electric current 非稳态脉冲电流
If the current status change with time, intitules as the unsteady flow.
如果水流状态随时间变化而变化，则称为非恒定流。
For solving the problem that DC variable speed system becomes unsteady when armature current is seriously discontinuous, a parameter variable regulator is presented in this paper.
文章就典型的直流双闭环调速系统设计方法进行说明。针对电枢电流不连续时，系统参数发生变化，造成系统性能变差，列出相应的电流环调节器参数的求法。
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