| 摘要 |
In a motor control device according to the invention, upon velocity control of a motor, a superimposed signal generating unit 9 outputs a superimposed signal idh of a repetitive waveform, such as a triangular wave or a sine wave. A d-axis current command generating unit 10 adds the superimposed signal idh generated by the superimposed signal generating unit 9d to a d-axis current command idc*0 and outputs a d-axis current command idc*. An axial misalignment detecting unit 11 (11a, 11b, 11c, and 11d) receives the d-axis current command idc* and a q-axis current command iqc* and outputs an axial misalignment angle estimation value Deltatheta^. An axial misalignment correction unit 12 receives the axial misalignment angle estimation value Deltatheta^ and an actual detected position thetam and outputs a position after correction thetam'. Therefore, detection and correction can be performed in real time through calculation at a given timing during a normal operation.
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