检索国际和国家专利汇编

1. (WO2018030209) MOTOR CONTROL METHOD, MOTOR CONTROL SYSTEM, AND ELECTRICALLY-POWERED STEERING SYSTEM

Pub. No.:    WO/2018/030209    International Application No.:    PCT/JP2017/027846
Publication Date: Fri Feb 16 00:59:59 CET 2018 International Filing Date: Wed Aug 02 01:59:59 CEST 2017
IPC: H02P 6/16
H02P 6/182
H02P 21/06
H02P 21/18
H02P 21/24
H02P 25/026
Applicants: NIDEC CORPORATION
日本電産株式会社
Inventors: GHADERI,Ahmad
ガデリー アハマッド
Title: MOTOR CONTROL METHOD, MOTOR CONTROL SYSTEM, AND ELECTRICALLY-POWERED STEERING SYSTEM
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.