ANGLE ACQUISITION METHOD AND RELATED APPARATUS

WIPO Patent Application WO/2022/110107

A1

An angle acquisition method and apparatus, for use in a motor control system (100). The motor control system (100) comprises a motor (103) and an angle sensor (104). The motor (103) comprises a first winding (101), a second winding (102), and a rotor. The angle acquisition method comprises: acquiring a first estimated angle corresponding to the first winding (101), and acquiring a second estimated angle corresponding to the second winding (102) (201), the first estimated angle being obtained according to the current of the first winding (101), and the second estimated angle being obtained according to the current of the second winding (102); acquiring a measured angle by means of the angle sensor (104) (202), the measured angle being a rotor angle acquired by the angle sensor (104); and determining the angle of the rotor according to the first estimated angle, the second estimated angle, and the measured angle (203). The angle acquisition method and apparatus not only can ensure the reliability of the acquired angle of the rotor and ensure the safe and controllable operation of the motor (103), but also can avoid excessive addition of the angle sensor (104), thereby facilitating the simplification of a hardware structure of the motor control system (100) and reducing the cost.

XU BIN (CN)
SHEN YIFENG (CN)
CHEN XUEFENG (CN)

PCT/CN2020/132650

June 02, 2022

November 30, 2020

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HUAWEI TECH CO LTD (CN)

H02P21/18; H02P23/14

CN106549618A	2017-03-29
CN101814891A	2010-08-25
CN105915127A	2016-08-31
CN107453669A	2017-12-08
CN110971155A	2020-04-07
US5569994A	1996-10-29
US20010002784A1	2001-06-07

SCIHEAD IP LAW FIRM (CN)

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