A servo motor is an electrical device that is commonly used in control systems to achieve precise and accurate movement. It is a type of motor that operates on the principle of servo control, which uses feedback from a sensor or encoder to adjust the position of the motor's output shaft.
The servo motor typically consists of a DC motor, a gearbox, and a control circuit. The control circuit receives a control signal, which determines the desired position of the output shaft, and compares it to the actual position of the output shaft. If there is a difference between the desired and actual position, the control circuit adjusts the power supplied to the motor to move the output shaft to the desired position.
Servo motors are commonly used in robotics, CNC machines, and other precision control applications where accurate and precise movement is required. They are also widely used in RC toys and models, where they provide precise control of the movement of the vehicle.