| 摘要 |
<P>PROBLEM TO BE SOLVED: To simplify the configuration of a torque ripple suppressing system based on a compensation current by facilitating learning the compensation current for suppressing torque ripples of an electric motor. <P>SOLUTION: In a controller 5 provided differently from a controller of the electric motor, in order to learn a compensation current, a torque ripple suppressing means 5A and a compensation current learning means 5B extract torque ripple frequency components from an axial torque detection value, and learn the torque ripple compensation current on the basis of the extracted components and form a table. In suppressing the torque ripples, the compensation current table is installed on an inverter 7, and the controller 5 and the axial torque detector 4 are disconnected from the system to execute torque ripple compensation control. <P>COPYRIGHT: (C)2011,JPO&INPIT |
