| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a motor control device capable of improving motor efficiency even when a command speed voltage varies, and also stably controlling the motor even when the command speed voltage varies more than assumed. <P>SOLUTION: A motor control device for controlling a motor so as to operate at a command speed comprises: a driving part which drives the motor; a lead angle control part which controls a lead angle amount of an electric phase in a stepwise manner according to the command speed; and a driving control part which controls the driving part using the electric phase advanced by the controlled lead angle amount. When the command speed voltage corresponding to the command speed exceeds a first threshold value, the lead angle control part changes the lead angle amount from a first value to a second value greater than the first value. When the command speed voltage is less than a second threshold value smaller than the first threshold value, the lead angle control part changes the lead angle amount from the second value to the first value. <P>COPYRIGHT: (C)2013,JPO&INPIT |
