The main function of the servo motor

Refers to the servo motor servo control of mechanical components in the system operation of the engine, is a kind of subsidy motor indirect variable speed device. Servo motor can make the control speed, position accuracy is very accurate, can convert voltage signal into torque and rotational speed to drive control object. Servo motor rotor speed controlled by the input signal, and can be rapid response, in the automatic control system, is used as actuators, and has a small electromechanical time constant, high linearity, initiating character such as voltage, can convert the received electrical signal to the motor shaft angular displacement or angular velocity on output. Divided into two major categories of dc and ac servo motor, its main characteristic is, when the signal voltage is zero no rotation, speed decreases with the increase of torque and uniform.