Buke servo motor - introduction to the control mode of DC servo motor

Create Date: 2024-8-30 12:03:23|Source: Kinco/Buko

There are two main control methods of DC servo motor: one is armature voltage control, that is, under the condition that the stator magnetic field remains unchanged, the speed and output torque of the motor are controlled by controlling the voltage signals applied to both ends of the armature winding; The other is excitation field control, that is, by changing the magnitude of the excitation current to change the stator magnetic field strength, so as to control the speed and output torque of the motor.

When the armature voltage control mode is adopted, because the stator magnetic field remains unchanged, the armature current can reach the rated value, and the corresponding output torque can also reach the rated value, so this method is also called the constant torque speed regulation mode.

When the excitation magnetic field control mode is adopted, because the magnetic field of the motor is close to saturation under the rated operating conditions, the speed of the motor can only be changed by weakening the magnetic field. Because the armature current is not allowed to exceed the rated value, with the weakening of the magnetic field, the speed of the motor increases, but the output torque decreases, and the output power remains unchanged, so this method is also called constant power speed regulation.
Buke servo motor - introduction to the control mode of DC servo motor

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