Singularly perturbed methods for digital control of a synchronous motor

This paper deals with the control under sampling of nonlinear singularly perturbed systems. Discretization schemes for such systems are proposed, on the basis of a two time scale control law. The control under sampling of synchronous motors in a (/spl alpha/-/spl beta/) representation is considered as a case study. This allows us to underline some pathology due to the discretization and reduction of this kind of nonlinear systems.<
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