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Patent Searching and Data


Title:
MOTOR CONTROL METHOD, MOTOR CONTROL SYSTEM, AND ELECTRICALLY-POWERED STEERING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2018/030209
Kind Code:
A1
Abstract:
Provided is a motor control method that comprises: a step for acquiring at least one measurement torque angle and two estimation torque angles; a step for finding all combinations of two torque angles that can be combined with respect to a set composed of at least one measurement torque angle and two estimation torque angles, and executing computation for determining the error on each of the combinations; a step for selecting a control mode for a motor from among a plurality of control modes comprising a sensor mode, a sensorless mode, and a shutdown mode, in which the selection is done by consulting a table representing relationships between the plurality of control modes and a plurality of reference patterns pertaining to computed error groups; and a step for controlling a motor in accordance with the selected control mode.

Inventors:
GHADERI AHMAD (JP)
Application Number:
JP2017/027846
Publication Date:
February 15, 2018
Filing Date:
August 01, 2017
Export Citation:
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Assignee:
NIDEC CORP (〒6018205, JP)
International Classes:
H02P6/16; H02P6/182; H02P21/06; H02P21/18; H02P21/24; H02P25/026
Foreign References:
JP2016136803A2016-07-28
JP2007525137A2007-08-30
JP2005057990A2005-03-03
JP2008125264A2008-05-29
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