| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a motor controller capable of detecting each phase current value of a motor even when regenerative control is carried out. <P>SOLUTION: A microcomputer performs regenerative control by alternately repeating a first period C1 of outputting a control signal which turns all FETs on the upper stage side on at the peak timing Tb of a triangular wave δ and a second period C2 of outputting a control signal which turns all FETs on the lower stage side on. When the regenerative control is performed, the microcomputer detects each phase current value of the motor by correcting a current value Ix1 before correction acquired at the same timing as the first period C1 in the second period C2, by using the output value of each current sensor acquired at the peak timing Tb of a triangular wave δ in the first period C1 as an offset current value Ix0. <P>COPYRIGHT: (C)2013,JPO&INPIT |
