Servo motor consists of feedback or power supply device, controller and the motor and servo controller are considered as the key part of the servo system. Servo Motor Control Unit (ควบคุม servo motor, Which Is The Term In Thai) is used to control the angle or the position of the servo motor which is also known as servo motor driver. 

Servo motor has been in use over the past so many years in a different application. Generally, they are small in size but very effective in behavior. They are used in the manufacturing of toy cars, in-line manufacturing, food services, airplanes, robots. But is very important to understand the application and how does it work actually.

Types Of Servo Motor Available In The Market For Different Purposes

There are two types of servo motor which are available in the market currently and are very effective and energy-efferent.

• AC Servo Motor

AC servo motor is very effective and thus it can easily handle and can deal with the high current and are used in industrial machinery. It is a little bit expensive as compare to the other servo motor.

• DC Servo Motor

DC servo motors are used in small application as it cannot handle the high current and also it is designed in such a way which can only deal with low current surges. The DC servo motor is less expensive as compare to the Ac servo motor.

Some Important Application If The Servo Motor

• In the radio-controlled airplane, Servo Motor Control Unit is used to control the movement of elevators and the position. 
• It is used in the automobile industry to balance the speed of cars, bikes, and other vehicles for safety purposes.
• Used in robots for better functioning and for balancing the position and also used in radio-controlled toys
• They are also used in many manufacturing industries for making machine tools, assembly lines, packaging in food factories, material handling, and for many other purposes.

How Does The Servo Motor Control Unit Work?

There is a technique behind the servo control unit which is known as Pulse Width Modulation; therefore, the motor is controlled by controlling its position using the pulse width modulation technique through the control wire. Servo motors have mainly three terminals, PWM Pulses, Vcc, and ground and all are equally important while you are controlling them. Frequencies, rotation, and degrees are the other essential terms to control the motor.