Nonlinear adaptive speed control of a permanent magnet synchronous motor: A perturbation estimation approach

Chen, Jian, Yao, Wei, Ren, Yaxing , Wang, Ruotong, Zhang, Lanhong and Jiang, Lin (2019) Nonlinear adaptive speed control of a permanent magnet synchronous motor: A perturbation estimation approach. Control Engineering Practice, 85 . pp. 163-175. ISSN 0967-0661

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This paper presents a nonlinear adaptive control (NAC) scheme for the speed regulation of a permanent magnet synchronous motor (PMSM) based on perturbation estimation and feedback linearizing control. All PMSM system’s unknown nonlinearities, parameter uncertainties, and external disturbances including unknown time-varying load torque disturbance, are defined as lumped perturbation terms, which are estimated by designing perturbation observers. The estimates are used to adaptively compensate the real perturbations and achieve adaptive feedback linearizing control of the original nonlinear system. The proposed control scheme does not require accurate system model and full state feedback. Stability of the close-loop system with proposed NAC is investigated via Lyapunov theory, and the effectiveness of proposed NAC scheme is verified through both simulation and experimental studies. Both simulation and experimental results show that the proposed NAC scheme can provide less regulation error in speed tracking, better dynamic performance and robustness against parameter uncertainties and load torque disturbance, compared with conventional vector control and load torque estimated based control.

Keywords:Permanent magnet synchronous motor (PMSM), Nonlinear adaptive control (NAC), Perturbation observer, Parameter uncertainty, Unknown load torque disturbance
Subjects:H Engineering > H620 Electrical Engineering
H Engineering > H660 Control Systems
Divisions:College of Science > School of Engineering
ID Code:50854
Deposited On:20 Sep 2022 10:19

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