METHOD FOR CONTROLLING ROBUST POSITION OF PERMANENT MAGNET SYNCHRONOUS MOTOR BY TAKING CURRENT AMPLITUDE LIMITING INTO CONSIDERATION

WIPO Patent Application WO/2022/147701

A1

The present invention belongs to the technical field of control over alternating-current permanent magnet synchronous motors. Provided is a method for controlling a robust position of a permanent magnet synchronous motor by taking current amplitude limiting into consideration. In the method, the influence of current amplitude limiting on a closed-loop system is fully taken into consideration in the theoretical analysis stages, such as controller design and stability analysis, the influence of system interference including system parameter uncertainty and an unknown load torque can be effectively overcome, and the control aim of accurately tracking the position of a motor is finally realized. More importantly, the technique is a continuous control method, by means of which a strong robustness in sliding-mode control is realized, and an inherent chattering problem thereof can also be overcome. In addition, a controller as designed in the present invention also has the advantages of a simple structure, etc. Because of the excellent anti-interference capability and the structural features of being simple and easily implemented, the technical solution provided in the present invention has broad practical application prospects.

SUN XIMING (CN)
ZHANG JIANYI (CN)

PCT/CN2021/070547

July 14, 2022

January 07, 2021

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UNIV DALIAN TECH (CN)

H02P21/22

CN110190795A	2019-08-30
CN111010062A	2020-04-14
CN111987943A	2020-11-24
CN108322120A	2018-07-24

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