| 摘要 |
<P>PROBLEM TO BE SOLVED: To resolve such a problem that a state where an estimation error of rotation speed and position estimation operation becomes excessive is generated due to speed variation to torque pulsation. <P>SOLUTION: A compressor motor control device has a current command corrector storing a speed compensation value in the case where a rotation speed becomes lower than a limit minimum speed at each of a plurality of positions in predetermined one rotation, and correcting a current command at the plurality of positions by using the stored speed compensation storing value. Speed compensation is performed so that the rotation speed does not become lower than the limit minimum speed. Thereby, influences of a high harmonic wave are suppressed, and stable driving can be realized. <P>COPYRIGHT: (C)2013,JPO&INPIT |
