In the separatelyexcited dc machine, the field winding is excited from a separate source.
对于它励直流电动机，励磁线圈由一个单独的电源来励磁。
2
The output power mechanism of a separatelyexcited DC motor can be equivalent to a variable resistance, which is parallel with the armature winding of the motor.
Based on the mathematic model of separatelyexcited DC motor, the control structure of the single - feedback-closed-loop controlled DC velocity modulation system was obtained.