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Servo controllers are important components of any servo control system. A typical servo design is based on just a few components, which include an electric motor, a feedback circuit and a controller. In the controller circuit, the feedback circuit broadcasts information about the angular position of the servo so that the controller can send the appropriate signal to move the servo motor to the desired position. Servo systems with controllers operate using closed-loop feedback, which has advantages over open-loop in that it enables better servo response performance, reduces susceptibility to interference from control errors, and increases the stability of the overall system.