Towards DC electromotor being controlled by digital ways, much work has been done by scholars the word over and there are already many achievements in this field.
针对直流电机的数字控制方式，国内外学者进行了大量的研究并取得了许多成果，控制技术日趋成熟。
In the part of prime mover simulation, the technique of armature current feedback plus speed feedback is adopted to alter the mechanical character of the DC electromotor.
在原动机模拟部分，采用电枢电流负反馈加转速负反馈的方法对直流电动机的机械特性进行改造。
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。
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