The Basic Principle of The Servo System

The basic principle of the servo system： 

The position detection device performs position feedback on the actual displacement of the detected moving part, compares it with the position command signal, adjusts the position of the difference between the two, and converts it into a speed control signal, and controls the drive device to drive the servo motor to a given The speed moves in the direction of eliminating the deviation until the difference between the commanded position and the feedback actual position is equal to zero.