Abstract：Modern permanent magnet synchronous motor vector control system mostly uses mechanical speed sensor to detect rotor position and speed information. Due to the complicated working environment of the motor, the mechanical speed sensor can not guarantee the stability of the system, so the speed sensor is gradually used for control. Among many speed sensorless control, sliding mode observer is widely used because it is insensitive to parameter changes and has strong robustness. The traditional sliding mode observer control system based on sign signal causes large jitter in the system due to the high frequency switching of the signal. To solve this problem, this paper proposes a new sliding mode observer, whose main structure is to use the segmentation index. The type function replaces the sign signal function. Then the stability condition analysis of the system is carried out by using the Lyapunov stability criterion equation. Finally, the simulation theory and experimental verification of the proposed new sliding mode observer are carried out by Matlab/Simulink simulation platform and motor-to-drag facility. The simulation and experimental results show that the proposed new sliding mode observer has better performance and stability than the traditional sliding mode observer.
张立伟, 李行, 宋佩佩, 张鹏, 云蓝斯. 基于新型滑模观测器的永磁同步电机无传感器矢量控制系统[J]. 电工技术学报, 2019, 34(zk1): 70-78.
Zhang Liwei, Li Hang, Song Peipei, Zhang Peng, Yun Lansi. Sensorless Vector Control Using a New Sliding Mode Observer for Permanent Magnet Synchronous Motor Speed Control System. Transactions of China Electrotechnical Society, 2019, 34(zk1): 70-78.
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2019, Vol. 34 
