engleski

Minimization of torque ripple in permanent magnet motors for the small velocity case

The main goal in using electronic comutating motors as servo motors is to obtain a smooth torque. To achieve that it is necessary to insure that magnetic flux is as close as posible to a sinusoidal shape. Torque ripple produces vibrations and noise during the running of a motor, especially when the speed of the motor shaft is small. The vibrations can decrease the operational time of the motor. It is desirable to have the torque which is not dependent on the shaft angle, but is only dependent on the excitation function.

permanent magnet motor; torque; torque ripple

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