| 摘要 |
PURPOSE:To provide a motor controller which allows precise rotational control of a motor by compensating for the torque ripple thereof. CONSTITUTION:A correction current amplitude value corresponding to the torque, speed, and rotational position of a motor is prestored, as a torque error data, in memory 6. A first address setting means 9 sets a read out address AD of the memory 6 based on a torque command T, speed information VL, and a rotational position P of the motor and a torque error correction data MD is read out from the memory 6 according to the read out address AD thus set. The torque error correction data MD and the torque command T are then added by an adder 12 in order to calculate a current amplitude AM of the motor. A three-phase current setting means 10 sets AC three-phase current commands CU, CV, CW from the current amplitude AM and the rotational position P of the motor thus realizing precise rotational control of motor. |
