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Synchronous Motor Observability Study and an Improved Zero-speed Position Estimation Design

Dalila Zaltni 1 Malek Ghanes 2 Jean-Pierre Barbot 2, 3 Abdelkrim Naceur 4 
3 ALIEN - Algebra for Digital Identification and Estimation
Inria Lille - Nord Europe, Inria Saclay - Ile de France, Centrale Lille, X - École polytechnique, CNRS - Centre National de la Recherche Scientifique : UMR8146
Abstract : This paper deals with the Permanent Magnet Synchronous Motor (PMSM) observability analysis for sensorless control design. The problem of loss of observability at low frequency range is always recognized in experimental settings. Nevertheless, there are no sufficient theoretical observability analyses for the PMSM. In the literature, only the sufficient observability condition has been presented. Therefore, the current work is aimed especially to the necessary observability condition analysis. Furthermore, an Estimator/Observer Swapping system is designed here for the surface Permanent Magnet SynchronousMotor (PMSM) to overcome position observability problems at zero speed which is an unobservable state point.
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Dalila Zaltni, Malek Ghanes, Jean-Pierre Barbot, Abdelkrim Naceur. Synchronous Motor Observability Study and an Improved Zero-speed Position Estimation Design. IEEE Conference on Decision and Control (CDC), Dec 2010, Atlanta, United States. pp.6. ⟨inria-00531077⟩

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