Design of non-singular fast terminal sliding mode controller for permanent magnet synchronous motors

被引：0
|
作者：
Kang E.-L. [1 ]
He J.-Z. [1 ]
Wang Y.-C. [1 ]
机构：
[1] Engineering Technology Innovation Center of High Efficiency Direct-Drive System in Universities in Heilongjiang, Harbin University of Science and Technology, Harbin
来源：
Dianji yu Kongzhi Xuebao/Electric Machines and Control | 2021年 / 25卷 / 12期
关键词：
Chattering suppression; Disturbance observation; Non-singular fast terminal sliding mode; Permanent magnet synchronous motor; Speed controller; Vector control;
D O I：
10.15938/j.emc.2021.12.007
中图分类号：
学科分类号：
摘要：
Aiming at the problem that traditional sliding mode control cannot make the system error converge in a finite time and the system has chattering, a strategy of combining non-singular fast terminal sliding mode control with disturbance observer is proposed to design a speed controller. The non-singular fast terminal sliding mode surface was designed with the method of combining nonlinear function and linear function, which realizes that the error can converge quickly at different stages. Regarding the influence of externally applied load torque on system performance, a disturbance observer was designed to observe the externally applied load torque, and feed forward compensation to the output of the speed controller, avoiding the use of large switching gains, and overcoming that the system has the disadvantage of large chattering when disturbance is applied. The results of simulation and experiment show that the motor can quickly reach the reference speed without overshoot when starting. When a sudden torque is applied, the disturbance observer can accurately observe the torque disturbance imposed by the system. The chattering of the speed is weakened, the speed drop is small, and the time to restore to the reference speed is short. It shows that the strategy of nonsingular terminal sliding mode control combined with disturbance observer has the advantages of strong robustness, fast response and high steady-state tracking performance. © 2021, Harbin University of Science and Technology Publication. All right reserved.
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页码：58 / 64
页数：6
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