Open AccessThe Research on Sensorless Control of Permanent Magnet Synchronous using SMC and SMO
Author(s) -
Li Daoqi,
Xiang Xiong,
Guoqing Zhang,
Yanhui Zhang,
Zuo Rui,
Wei Feng
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/717/1/012019
Subject(s) - control theory (sociology) , overshoot (microwave communication) , sliding mode control , electronic speed control , controller (irrigation) , observer (physics) , attenuation , magnet , synchronous motor , computer science , control system , torque , control engineering , control (management) , engineering , physics , mechanical engineering , telecommunications , agronomy , optics , nonlinear system , quantum mechanics , artificial intelligence , electrical engineering , biology , thermodynamics
This work proposes a way to achieve the sensorless control of permanent-magnet synchronous motor using sliding mode controller (SMC) and Sliding Mode Observer(SMO). In this Paper, the SMC is designed to replace the speed control loop PI controller from the original permanent magnet synchronous motor control system with the sliding mode variable structure control theory. Combined with the modified SMO, the “SMC and modified SMO” motor control system is proposed. Compared with the “PI and modified SMO” mode, the performance of the motor control is increased substantially, the interference torque speed attenuation is decreased by 87.5%, and the speed control error was also reduced by 67.7%. There is no overshoot with the reaction speed, and significant improvement in response speed, anti-interference performance, control accuracy and observation precision are achieved. Overall, both the system control and observation performance are significantly improved.