Speed Control Strategy of Permanent Magnet Synchronous Motor Based on Adaptive Backstepping

doi:10.11985/2020.03.005

Abstract

Abstract:

Aiming at the uncertainty of nonlinear term in permanent magnet synchronous motor and the influence of parameter perturbation and load disturbance on mechanical angular frequency, rotational speed and system control during operation, a rotational speed control strategy of permanent magnet synchronous motor based on adaptive backstepping is proposed to meet the requirements of high precision and high stability speed control application. The nonlinear backstepping control is applied to solve the nonlinear problem of the motor, and the adaptive control is combined with the nonlinear backstepping control to realize the adaptive adjustment and tracking of the motor speed to the expected value, thus obtaining better dynamic response and robustness. The mathematical model of permanent magnet synchronous motor including parameter perturbation and output side load perturbation is established, and a backstepping controller satisfying Lyapunov stability is designed. Adaptive algorithm is used to optimize backstepping controller parameters to further improve system stability and robustness. The simulation results verify the controller's good speed tracking and anti-interference adjustment effects, and the effectiveness of the method.

Key words: Permanent magnet synchronous motor(PMSM), adaptive backstepping control, Lyapunov, robustness

CLC Number:

TM561

YU Peizhou,YANG Gang,YANG Jihui,ZHANG Yuhua,XUE Hua,HUANG Ke. Speed Control Strategy of Permanent Magnet Synchronous Motor Based on Adaptive Backstepping[J]. Journal of Electrical Engineering, 2020, 15(3): 38-43.

Figures/Tables 5

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参数	数值	参数	数值
定子电阻R/Ω	0.52	永磁磁通φ/Wb	0.814
极对数p	3	定子电感L/H	0.015
转动惯量J/(kg·m²)	0.002	黏滞摩擦因数	0.000 01