| 摘要 |
In an electric motor control system according to the present invention, in restarting, after the effect of transient variation has been abated, a phase-reversal-timing detecting means 31 detects the first maximal value V 1 , the first minimal value V 2 , and the second maximal value V 3 , by comparing a value of the integration term of the d-axis component vds* of the 2-phase-voltage command outputted from the d-axis current control means 28 with its previous value, and then outputs a time at which the value of the integration term of the d-axis component vds* of the 2-phase-voltage command becomes below (the first minimal value V 2 +the second maximal value V 3 )/2, as the first specific phase at which the current-commanding phase is turned by 180 degrees, to the current phase commanding means 22.
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