| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a motor control device that can accurately compensate current distortion accompanied by the setting of a dead time, irrespective of a rotational speed. <P>SOLUTION: A microcomputer 11 comprises: a rotational angular speed operation part 35 that operates the rotational angular speed ω of a brushless motor 2; a feedback gain determination part 36 that determines feedback gains (Kdp, Kdi, Kqp and Kqi) on the basis of the rotational angular speed ω; and a dead-time compensation amount determination part 40 that determines dead-time compensation amounts βu, βv and βw. The feedback gain determination part 36 determines the feedback gains (Kdp, Kdi, Kqp and Kqi) each having large follow-up performance as the absolute value of the rotational angular speed ω becomes large, that is, as the brushless motor 2 is rotated at high speed, and the dead-time compensation amount determination part 40 determines the dead-time compensation amounts βu, βv and βw each having a small value as the absolute value of the rotational angular speed ω becomes large. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
