Fuzzy sliding mode control of permanent magnet synchronous motor based on an improved index reaching law

Aiming at the parameter uncertainty and load torque disturbance of permanent magnet synchronous motor system, a terminal sliding mode control algorithm for permanent magnet synchronous motor based on the reaching law is proposed. First, a sliding mode control algorithm for sliding mode reaching law is proposed, which can dynamically adapt to the changes in system state. Second, a sliding mode disturbance observer is designed to estimate the lumped disturbance in real time and to compensate the controller for disturbance. On this basis, an online identification method based on disturbance observer for viscous friction coefficient and moment of inertia is used to reduce the influence of parameter uncertainty on the control system. Simulation and experimental results show the effectiveness of the method.

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Terminal Sliding Mode Control of Permanent Magnet Synchronous Motor Based on A Novel Adaptive Reaching Law

2021 IEEE 4th Advanced Information Management, Communicates, Electronic and Automation Control Conference (IMCEC) ◽

10.1109/imcec51613.2021.9482057 ◽

2021 ◽

Author(s):

Chang Xu ◽

Kun Wang ◽

Xueqin Yang ◽

Binbin Zhang

Keyword(s):

Sliding Mode Control ◽

Permanent Magnet ◽

Sliding Mode ◽

Permanent Magnet Synchronous Motor ◽

Synchronous Motor ◽

Terminal Sliding Mode Control ◽

Terminal Sliding Mode ◽

Reaching Law ◽

Mode Control

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Model-Free Non-Cascade Integral Sliding Mode Control of Permanent Magnet Synchronous Motor Drive with a Fast Reaching Law

Symmetry ◽

10.3390/sym13091680 ◽

2021 ◽

Vol 13 (9) ◽

pp. 1680

Author(s):

Tong Li ◽

Xudong Liu

Keyword(s):

Sliding Mode Control ◽

Permanent Magnet ◽

Sliding Mode ◽

Permanent Magnet Synchronous Motor ◽

Synchronous Motor ◽

Main Trend ◽

Integral Sliding Mode ◽

Reaching Law ◽

Mode Control ◽

Model Free

Electric vehicle has become the main trend of the development of automobile industry. As a highly symmetrical system, the characteristics of drive motor will have a great impact on the driving comfort. Aiming at the control regulation of permanent magnet synchronous motor (PMSM) drive, a model-free and non-cascade sliding mode control with a fast-reaching law is proposed in this paper. Firstly, the mathematical model of PMSM is constructed as an ultra-local model without considering any motor parameters. Then, to improve the response speed, an integral sliding mode method with a fast reaching law is proposed, and the fast convergence can be realized. The controller system adopts single loop non-cascade control, which greatly simplifies the system structure. In order to further improve the anti-disturbance performance of the system, the dual disturbance observers are used to compensate the disturbance through feed-forward control. The stability of the system is proved by Lyapunov. Finally, the experimental results show that the proposed method has faster convergence speed and stronger anti-disturbance ability.

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