MOTOR CONTROL SYSTEM AND POWER STEERING SYSTEM

WIPO Patent Application WO/2019/163588

A1

Provided is a motor control system including an inverter for driving a motor and a control operation unit for feedback controlling the inverter, wherein the control operation unit includes a voltage control operation unit that computes a voltage command value indicating a voltage to be applied to the motor from the inverter on the basis of a current deviation between the current command value and the actual current detection value, and a torque ripple compensation operation unit that adds a compensation value, which compensates torque ripple in the motor, to an upstream signal value in the flow of signals passing through the voltage control operation unit; and the torque ripple compensation operation unit includes a phase compensation unit that computes a compensation value component in the voltage control operation unit based on an actual angular velocity value indicating an angular velocity at which the motor rotates, and an inverse characteristic operation processing unit that computes a compensation value component for compensating the torque ripple on the basis of the reverse characteristic of an open-loop transfer function in the feedback control.

ENDO SHUJI (JP)
TATEWAKI TOKUJI (JP)
UEDA TOMOYA (JP)
WATAHIKI MASANORI (JP)
MORI TOMONARI (JP)

PCT/JP2019/004937

August 29, 2019

February 13, 2019

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NIDEC CORP (JP)
NIDEC ELESYS CORP (JP)

H02P23/04; B62D6/00; H02P27/06

JP2013085439A	2013-05-09
JP2010057217A	2010-03-11
JP2011050118A	2011-03-10
JP2006211873A	2006-08-10

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