Robustness Analysis of Pmsm LPV Controller

Abstract

This paper presents robustness analysis of linear parameter varying (LPV) controller for permanent magnet synchronous motor (PMSM). Robust controller was designed for synchronous motor in d-q rotating frame. Nonlinear equations of PMSM were rewritten to an LPV form with rotor speed as varying parameter. H ∞ LPV Controller was designed using Matlab Robust Control Toolbox. Desired shapes of sensitivity and complementary sensitivity functions were specified by weighting functions. Simulations with nonlinear model of PMSM were run with different sets of rotor resistance in order to verify robustness of resulting controller.