| 摘要 |
A position-sensorless motor control device has a superposer that superposes, on the drive current with which the motor is driven, a superposed current having a different frequency than the drive current, a superposed component extractor that extracts, from the motor current fed to the motor, the gamma-axis and delta-axis components of the superposed current, and a controller that controls the motor so that the direct-current component of the arithmetic product of the extracted gamma-axis and delta-axis components of the superposed current converges to zero.
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