Motor drive controller and method for controlling motor

A method for controlling a motor, the method comprising:

• detecting a rotation status of a rotor of the motor;
• generating rotation status detection information corresponding to the detected rotation status;
• measuring a rotation unevenness indicating a flutter characteristic of the motor by a rotation unevenness information generator based on the rotation status detection information;
• generating rotation unevenness information by the rotation unevenness information generator according to a result of measurement of the rotation unevenness;
• generating a driving control signal by a control circuit based on the rotation unevenness information and a target speed signal for controlling the motor to rotate in target speed corresponding to the target speed signal;
• and
• outputting a driving signal to the motor based on the driving control signal,
• wherein the rotation unevenness information generator includes:
• a rotation unevenness measuring circuit that measures the rotation unevenness based on the rotation status detection information and outputs the rotation unevenness information;
• and
• a rotation unevenness reducing circuit that generates rotation unevenness control information including gain information and advance angle information that are optimized to reduce the rotation unevenness based on the rotation unevenness information,
• wherein the rotation unevenness information generator is configured to output the rotation unevenness control information to at least one of the control circuit and an external device, and
• wherein the control circuit is configured to generate the driving control signal such that the rotation unevenness reducing information is included in the driving control signal based on the rotation unevenness control information when the rotation unevenness control information is input from the rotation unevenness information generator.