| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a motor controller capable of detecting a current while avoiding the influence of ringing noise without changing a switching operation. <P>SOLUTION: A current controller includes a three phase-two phase conversion section 74 for detecting or estimating a current value flowing through a motor line 18 of a brushless motor 50 by a phase current sensor 73 during an on-section where an arm switch having a higher duty ratio among an upper arm switch 16 and a lower arm switch 17 is turned on. <P>COPYRIGHT: (C)2011,JPO&INPIT |
