DC servo motor refers specifically to DC brushed servo motor - the servo motor has low cost, simple structure, large starting torque, wide speed range, easy control, requires maintenance, but is easy to maintain (replace carbon brushes). DC servo motors have good starting, braking and speed regulation characteristics, and can easily achieve smooth speed regulation in a wide range. Therefore, they are often used in production equipment that requires high speed regulation performance of servo motors.

DC motor component

DC servo motor is mainly composed of stator, rotor core, motor shaft, servo motor winding commutator, servo motor winding, speed measuring motor winding, speed measuring motor commutator and other components.DC servo motor constructure.

1. Stator. Stator pole magnetic field is generated by the magnetic poles of the stator. According to the way of generating magnetic field, DC servo motors can be divided into permanent magnet type and separately excited type. The permanent magnetic poles are made of permanent magnet materials, and the separately excited magnetic poles are made of laminated stamped silicon steel sheets. The external coil is passed through a DC current to generate a constant magnetic field.
2. Rotor. Also known as the armature, it is made of laminated silicon steel sheets with coils embedded on the surface. When DC current is passed, the electromagnetic torque that drives the load to rotate is generated under the action of the stator's magnetic field.
3. Brushes and commutator segments. In order to keep the generated electromagnetic torque in a constant direction, the rotor can rotate uniformly and continuously in a fixed direction, the brushes are connected to the external DC power supply, and the commutator segments are connected to the armature conductors.