MOTOR CONTROL DEVICE AND MOTOR CONTROL METHOD

摘要

A motor control unit having a motor structure that rotates a rotor by voltage excitation includes a photo interrupter, a slit rotation plate, a comparator, and an encoder circuit in order to obtain a position detection signal corresponding to a rotational phase of an output shaft. During a period of time from the motor stopping to the change of the output of an encoder circuit after the supply of a drive voltage waveform, a CPU supplies a drive voltage waveform that is advanced by an advance angle amount that has been set in advance to the motor, and after the change of the output of the encoder circuit, a drive signal by which the advance angle amount is controlled based on the output of the encoder circuit is supplied to the motor.

主权项

1. A motor control device that performs drive control of a motor comprising:
an obtaining unit that is configured to obtain a position detection signal by which the output periodically changes due to a movement of a movable element of the motor; and a control unit that is configured to supply a drive signal by which an amount of an advance angle is controlled based on the position detection signal obtained by the obtaining unit to the motor, wherein, during a period of time from the motor stopping to the change of the position detection signal obtained by the obtaining unit after the supply of the drive signal, the control unit supplies the drive signal that is advanced by the amount of the advance angle that has been set in advance to the motor, and after the position detection signal obtained by the obtaining unit changes, the control unit supplies a drive signal by which the amount of the advance angle is controlled based on the position detection signal to the motor.