Open AccessA New Type of Sliding Mode Observer for Permanent Magnet Synchronous Motor Control
Author(s) -
Sheng Cheng,
Yanliang Xu
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2113/1/012044
Subject(s) - control theory (sociology) , observer (physics) , counter electromotive force , rotor (electric) , sliding mode control , magnet , synchronous motor , permanent magnet synchronous motor , mode (computer interface) , computer science , electromotive force , state observer , control engineering , engineering , voltage , control (management) , physics , artificial intelligence , nonlinear system , mechanical engineering , quantum mechanics , electrical engineering , operating system
Aiming at the high-frequency oscillation and estimation accuracy problems of traditional sliding mode observers in the control process of permanent magnet synchronous motors, a sensorless control method for permanent magnet synchronous motors based on a new approaching law sliding mode observer is proposed. Based on the construction of a permanent magnet synchronous motor two-phase static coordinate system model, a sliding mode observer is used to estimate the back electromotive force, and then the rotor speed and position information are obtained. Finally, a simulation experiment is carried out. The results show that the new sliding mode observer based on the new approaching law effectively reduces the high frequency chattering of the system, improves the estimation accuracy of the system, and has better control performance.