| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a brushless motor control device capable of improving the sustention of motor control on the occurrence of an abnormality in a magnetic pole sensor. <P>SOLUTION: The brushless motor control device comprises the two magnetic pole sensors H1, H2 that detect the rotational position of a motor shaft. By this arrangement, even if the abnormality occurs in the first priority magnetic pole sensor H1, the sustention of the motor control is guaranteed by switching phase-switch patterns according to the output change of the second priority magnetic pole sensor H2 as far as the second preferred magnetic sensor H2 is normal. The sustention of the motor control on the occurrence of the abnormalities in the magnetic pole sensors can thereby be improved. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
