| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a motor control apparatus which eliminates torque fluctuations, even if the sampling of motor electrical angle and motor current is carried out at unequal intervals. <P>SOLUTION: A carrier period variable section 6 diffuses the spectra of higher harmonics generated by an inverter 2, by changing a carrier period used by a PWM control section 18. An electrical angle compensating section 15 outputs an electrical angle compensating an electrical angle of a motor 3 detected by an angle sensor 5, to a 2-phase/3-phase conversion section 14, according to a carrier period changed by the carrier period variable section 6. The PWM control section 18 controls the inverter 2 at the carrier period, changed by the carrier period variable section 6 so as to obtain a three-phase target value which is outputted by the 2-phase/3-phase conversion section 14. <P>COPYRIGHT: (C)2010,JPO&INPIT |
