| 摘要 |
A motor controller which can perform torque ripple correction with high precision, and a motor and a torque ripple correction method. The motor controller comprises a section (51) for creating an electric angle from a position signal, a torque command trace section (52) for storing a torque command and the electric angle for a predetermined time, a section (53) performing Fourier transform on the torque command data thus stored, a section (54) for extracting the primary, secondary and sextic components having a large ripple component using the data subjected to Fourier transform, and a section (55) for creating a sine wave correction signal by extracting the component having a highest spectral order among the extracted order components. |
