Patent ID: 9124203
Filing Date: 2015-09-01
Classification: G02B,H02P

Abstract:
1. A control apparatus configured to control driving of a motor that includes a rotor having a magnet, a first coil, and a second coil, the control apparatus comprising: first and second rotor position detectors arranged with different phases and configured to detect rotating positions of the rotor; a drive pulse signal generator configured to use as a reference signal one of a first signal output from the first rotor position detector and a second signal output from the second rotor position detector, and to generate a third signal that is a pulse signal used to drive the motor; a delay angle operator configured to change a delay angle that is a phase difference between the reference signal and the third signal; a driver configured to drive the motor based on the third signal; a signal switching unit configured to perform reference signal switching that switches the reference signal between the first signal and the second signal; and an initial delay angle setting unit configured to set a delay angle between the third signal and a signal different from a signal that is the reference signal just before the reference signal switching among the first signal and the second signal, to be an initial delay angle just after the reference signal switching.