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Patent Searching and Data


Title:
MOTOR CONTROL SYSTEM, AND POWER STEERING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/163589
Kind Code:
A1
Abstract:
This motor control system is provided with: an inverter that drives a motor; and a control calculation unit that subjects the inverter to feedback control. The control calculation unit is provided with: a voltage control calculation unit that calculates, on the basis of a current deviation between a current command value and an actual current detection value, a voltage command value that indicates a voltage to be applied from the inverter to the motor; and a torque ripple compensation calculation unit that adds, to a downstream signal value in a flow of signals passing through the voltage control calculation unit, a compensation value for compensating a torque ripple with respect to the motor. The torque ripple compensation calculation unit is provided with: a phase compensation unit that calculates a compensation value component with respect to the voltage control calculation unit on the basis of an actual angular speed value that indicates the angular speed at which the motor rotates; and a reverse characteristic calculation processing unit that calculates, on the basis of a reverse characteristic of an electrical characteristic of the motor, a compensation value component for compensating the torque ripple.

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Inventors:
ENDO SHUJI (JP)
TATEWAKI TOKUJI (JP)
UEDA TOMOYA (JP)
WATAHIKI MASANORI (JP)
MORI TOMONARI (JP)
Application Number:
JP2019/004938
Publication Date:
August 29, 2019
Filing Date:
February 13, 2019
Export Citation:
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Assignee:
NIDEC CORP (〒6018205, JP)
NIDEC ELESYS CORP (〒2120032, JP)
International Classes:
H02P23/04; B62D6/00; H02P27/06
Foreign References:
JP2013085439A2013-05-09
JP2010057217A2010-03-11
JP2011050118A2011-03-10
JP2006211873A2006-08-10
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