A system is provided for increasing the control accuracy of a motor 12 which feeds back a signal to a motor control circuit 14. The motor control circuit output 20 provides a command voltage to the motor winding. The motor control circuit 14 has an input 18 for receiving an input command from a source external of the motor 12. The actual speed of the motor shaft 26 is sensed and data representative of this actual speed is transmitted through a frequency to voltage converter 36 and an analog to digital converter 40 to a microprocessor 46 which calculates an input command based upon the received actual motor speed data. The input command is transmitted from the microprocessor 46 through a digital to analog converter 58 to the motor control circuit input 18. The command voltage from the output 20 of the motor control circuit 14 is adjusted in response to variations in the input command transmitted from the microprocessor 46.