A servo motor is a rotary actuator or linear actuator that allows for angular position, acceleration and velocity. It has capabilities that a regular motor doesn’t possess. Servo motors work with sensors for precise control of movement. The controller is the most sophisticated part of the servo motor, as it is designed for precision.
Servo motors are a combination of specific parts, which include a DC or AC motor, and are suitable for use in a closed-loop control system. Servo motor applications include robotics, automated manufacturing and computer numerical control (CNC) machining applications.
The two types of servo motors have different uses. AC Servo motors can handle higher current surges and tend to be used in industrial machinery.