Servo motor working principle
In a servo system, the motor that controls the operation of mechanical components is called a servo motor, which is a type of auxiliary motor with indirect speed control. Servo motors can control speed, and their positional accuracy is extremely high. They can convert voltage signals into torque and speed to drive the controlled object.
A servo system is an automatic control system that enables the output controlled variables, such as the position, orientation, and state of an object, to follow any changes in the input target (or given value).
When the servo motor receives a pulse, the servo system will move. It has the function of emitting pulses, so when the servo motor rotates by an angle, it will emit a corresponding number of pulses.
This creates a closed-loop system that corresponds to the pulses received by the servo motor. This allows the system to know the total number of pulses sent to and received by the servo motor. This enables precise control of the motor's rotation and achieves more accurate positioning.
DC servo motors are divided into brushed and brushless motors. Brushed motors are generally cheaper and have a simpler structure, higher starting torque, wider speed range, and are easier to control. However, they require maintenance, making repairs less convenient. Brushed motors are better suited for cost-sensitive general industrial and civilian applications.
