PERMANENT MAGNET SYNCHRONOUS MOTOR SENSORLESS CONTROL METHOD FOR AGV TRANSFER ROBOT

WIPO Patent Application WO/2024/060306

A1

Disclosed in the present invention is a permanent magnet synchronous motor sensorless control method for an agv transfer robot, comprising: determining an operating state of a permanent magnet synchronous motor; if the permanent magnet synchronous motor operates in a high-speed state, using a traditional sliding-mode observer for observation; and if the permanent magnet synchronous motor operates in a low-speed state, using a nonlinear observer based on a flux linkage model for observation. According to embodiments of the present invention, a traditional sensor-based control method is replaced with a sensorless control method, so that the device cost is effectively reduced. In the high-speed state and the low-speed state of the permanent magnet synchronous motor, the nonlinear observer based on the flux linkage model and the traditional sliding-mode observer are respectively used for observation, thereby solving the problems that a single observer is insufficient in precision and insufficient in torque during high-speed and low-speed observation.

TIAN YAN (CN)
MA HAIGANG (CN)
WEI HAIFENG (CN)
WANG HAOCHEN (CN)

PCT/CN2022/122969

March 28, 2024

September 30, 2022

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UNIV JIANGSU SCIENCE & TECH (CN)

H02P21/13; H02P21/05; H02P21/14; H02P21/18; H02P21/24; H02P25/022

CN109391201A	2019-02-26
CN114665772A	2022-06-24
CN106487304A	2017-03-08
CN110504888A	2019-11-26
CN115065287A	2022-09-16
KR20110118478A	2011-10-31

NANJING SUGAO PATENT AND TRADEMARK FIRM (ORDINARY PARTNERSHIP) (CN)

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