| 摘要 |
The present invention provides a motor control device, which can properly restrict a torque ripple of an alternating current motor. To solve the subject, the present invention comprises an axis error estimation unit (303) for estimating an axis error based on a current value of an inverter (1) detected by a current sensor (2); a Fourier transformer (316a) for extracting an axis error vector from a temporal change of the axis error; and an integral controller (316b) with a circular limiter for calculating a compensation current vector to eliminate the torque ripple and restricting movement of the compensation current vector from a circumference of which radius is a set limiter value, wherein the integral controller (316b) with the circular limiter executes circular limiter treatment for restricting the movement of the compensation current vector to make an argument of the compensation current vector come close to that of the axis error vector. |
