Armature Controlled Dc Servo Motor Transfer Function. The speed of a dc motor is directly proportional to armature voltage and inversely proportional to fluxin field controlled dc motor the armature voltage is kept constant and the speed is varied by varying the flux of the machinesince flux is directly proportional to field current the flux is varied by varying field currenthere we will learn. The dc motor converts electrical energy into mechanical energy.
In field controlled dc motors the input field volatge controls the motor shaft output while the armature current remains constant. To achieve this either the stator voltage is kept constant or the stator coils are replaced by a permanent magnet. In order to implement this control the stator flux must be kept constant.
Transfer function of field controlled dc motor.
Adjust the field voltage at 50 of rated value. The transfer function is defined as the ratio of laplace transform of the output variable to the laplace transform of input variable. Adjust the field voltage at 50 of rated value. Block diagram and transfer function of dc motor armature controlled dc motor.