| 摘要 |
PROBLEM TO BE SOLVED: To enable a resolver of a motor controller to improve accuracy of an origin learning while an inverter supplying electric voltage applied to each phase of a motor has a dead time.SOLUTION: When carrying out an origin learning of a resolver in a motor controller, the origin learning of the resolver is permitted only if a rotation number of the motor is within a predetermined range, thereby reducing influence of a dead time on the accuracy of the origin learning, so that the accuracy of the origin learning can be improved. |
