Speed Control of Permanent Magnet Synchronous Motor With Uncertain Parameters and Unknown Disturbance

Control of the speed as well as shaping the speed transient response of a surface-mounted permanent magnet synchronous motor (PMSM) is achieved using the method of feedback linearization and extended high-gain observer. To recover the performance of feedback linearization, an extended high-gain obse...

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Bibliographic Details
Published in:IEEE transactions on control systems technology 2021-11, Vol.29 (6), p.2639-2646
Main Authors: Alfehaid, Abdullah A., Strangas, Elias G., Khalil, Hassan K.
Format: Article
Language:English
Subjects:
Controllers
Disturbance rejection
extended high-gain observer
Feedback linearization
High gain
Mathematical model
Observers
Output feedback
Parameter uncertainty
Permanent magnet motors
permanent magnet synchronous motor (PMSM)
Permanent magnets
Perturbation theory
PI control
Proportional integral
Robust control
Singular perturbation
Speed control
Stability analysis
Synchronous motors
Transient response
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Description
Summary:Control of the speed as well as shaping the speed transient response of a surface-mounted permanent magnet synchronous motor (PMSM) is achieved using the method of feedback linearization and extended high-gain observer. To recover the performance of feedback linearization, an extended high-gain observer is utilized to estimate both the speed of the motor and the disturbance present in the system. The observer is designed based on a reduced model of the PMSM, which is realized through the application of singular perturbation theory. The motor parameters are assumed uncertain and we only assume knowledge of their nominal values. The external load torque is also assumed to be unknown and time-varying, but bounded. Stability analysis of the output feedback system is given. Experimental results confirm the performance and robustness of the proposed controller and compare it to the cascaded proportional integral (PI) speed controller.
ISSN:1063-6536
1558-0865
DOI:10.1109/TCST.2020.3026569