Motor drive control device, motor unit, and motor drive control method

A motor drive control device, comprising:

• a control circuit configured to generate a drive control signal for controlling drive of a motor;
• and
• a drive circuit configured to drive the motor in accordance with the drive control signal, wherein
• the control circuit includes:
• a feedback control unit configured to calculate an operation amount of the motor such that a rotation speed of the motor matches a target rotation speed;
• a drive control signal generation unit configured to generate the drive control signal based on the operation amount;
• a current fluctuation detection unit configured to detect a fluctuation of a current flowing through the motor;
• a correction instruction unit configured to instruct correction of the operation amount when the fluctuation of the current flowing through the motor is detected by the current fluctuation detection unit;
• and
• a correction unit configured to correct the operation amount calculated by the feedback control unit in accordance with an instruction from the correction instruction unit, and
• when the correction of the operation amount is not instructed from the correction instruction unit, the correction unit provides the operation amount calculated by the feedback control unit to the drive control signal generation unit without correcting the operation amount, and when the correction of the operation amount is instructed from the correction instruction unit, the correction unit corrects the operation amount calculated by the feedback control unit and provides the operation amount to the drive control signal generation unit.