Abstract

The paper explores the problem of nonlinear robust control law design for a permanent magnet synchronous motor (PMSM). The main principle of PMSM control is cascade (or subordinate) control with external and internal loops that implement PI-controls. The modern control theory provides a lot of various methods for PMSM control laws design. However, in order to PMSM nonlinear robust control law design here we consider the sliding control law design method based on a sequential set of invariant manifolds of the synergetic control theory (SCT). This method implements vector control and does not focus on the standard structure of PMSM cascade control. In comparison with the traditional approach: (i) the obtained PMDM vector control laws provide robustness to external and parametric perturbations; (ii) the proposed PMSM sliding control laws design approach simplifies the analysis of the sliding mode conditions; and (iii) simplifies the closed-loop system stability conditions analysis.

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