What is a servo control system?

The servo control system is also known as the dynamic control system. The reference input is an arbitrary time function with unknown change rule. The task of the servo control system is to keep the controlled quantity in accordance with the same regularity and to maintain the error of the input signal within the specified range.

This system is most widely used in military applications, such as missile launcher control system, radar antenna control system, etc. It is characterized by input as unknown. Servo Drive System (servo system) is a kind of automatic control system, such as CNC machine tool, which takes mechanical position or angle as controlling object. The use of the drive motor in the servo system requires a fast response speed, positioning accuracy, a large moment of inertia, such as the special motor called Servo motor.

Of course, its basic working principle and ordinary AC/DC motor is no different. This kind of motor's special drive unit is called the servo drive unit, sometimes referred to as the servo, generally its interior includes the electric current, the speed and/or the position closed loop.