| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a motor controller having a simple constitution, by which the service life of a semiconductor switching element used for an inverter part of the motor controller can be extended, even in an application where a motor periodically repeats a normal operation and a locked state, or even in a use case, where a rotation angle of motor action is small despite the normal operation. <P>SOLUTION: The motor controller includes: a drive signal switching section 60 for switching the correlation between a driving signal and a gate drive signal, according to a predetermined current phase set value; and a phase sequence switching part 70, which is disposed in the midway of a connection path between an inverter 20 and the motor 200 and switches the phase sequence between the inverter 20 and the motor 200, based on a switching signal 71 from a control part 50. <P>COPYRIGHT: (C)2010,JPO&INPIT |
