Servo technology is an important control technology used to reproduce or precisely follow a process.
In practical applications, the output of the servo system is acceleration, displacement velocity or position movement, which is a typical feedback control system, which accurately tracks the angle or position movement of the servo system input according to the output angle change or position movement change.
According to the type of drive element and the characteristics of use, the servo system mainly includes pneumatic servo system and hydraulic servo system, of which electromechanical servo system is the most widely used, which is mainly used in command instrument, artillery control and ship automation driving, and is gradually used in more fields, especially spacecraft and missile guidance, antenna position control, automatic lathe, etc.