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Patent Searching and Data


Title:
MOTOR CONTROL SYSTEM AND POWER STEERING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/163587
Kind Code:
A1
Abstract:
This motor control system is for driving a motor having a phase number n of 3 or higher. The system comprises an inverter and a control calculation unit for performing feedback control of the inverter. The control calculation unit comprises: a voltage control calculation unit for calculating, on the basis of current deviation between a current command value and an actual detected current value, a voltage command value indicating the voltage to be applied by the inverter to the motor; a torque ripple compensation calculation unit for adding a compensation value for compensating for torque ripples in the motor to an upstream and/or a downstream signal value in a stream of a signal passing through the voltage control calculation unit; and a current limit calculation unit for limiting the current command value via adaptive control using an actual angular velocity value indicating the angular velocity at which the motor is rotating.

Inventors:
ENDO SHUJI (JP)
TATEWAKI TOKUJI (JP)
UEDA TOMOYA (JP)
WATAHIKI MASANORI (JP)
MORI TOMONARI (JP)
Application Number:
JP2019/004936
Publication Date:
August 29, 2019
Filing Date:
February 13, 2019
Export Citation:
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Assignee:
NIDEC CORP (JP)
NIDEC ELESYS CORP (JP)
International Classes:
H02P23/04; B62D6/00; H02P27/06
Foreign References:
JP2013085439A2013-05-09
JP2011050118A2011-03-10
JP2006211873A2006-08-10
JP2007037299A2007-02-08
JP2010187441A2010-08-26
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