CONTROL DEVICE OF MOTOR, ELECTRONIC APPARATUS, RECORDING APPARATUS, ROBOT, AND CONTROL METHOD OF MOTOR

摘要

A control device of a motor includes detection section that detect counter-electromotive voltages induced in coils by rotation of a rotor, a counter-electromotive voltage normalizing section that normalizes a value of the counter-electromotive voltage using a normalization coefficient according to a speed of the rotation of the rotor, and a rotor position specifying section that specifies the position of the rotor based on values of the counter-electromotive voltage normalized by the counter-electromotive voltage normalizing section.

主权项

1. A control device of a motor that rotates a rotor by a magnetic flux generated by supplying an excitation current to a coil, the control device of a motor comprising:
a detection section that detects a value of a counter-electromotive voltage induced in the coil by rotation of the rotor; a normalizing section that normalizes the value of the counter-electromotive voltage by using a normalization coefficient according to a speed of rotation of the rotor; and a specifying section that specifies a position of the rotor based on the value of the counter-electromotive voltage that is normalized.