Abstract :
This paper deals with the modeling, analysis, design and simulation of a robust control method for a permanent magnet synchronous machine (PMSM) supplied with a PWM inverter based on a Linear Parameter Variation (LPV) H_(unlimited) standard controller. Under the influence of uncertainties and external disturbances, by a variation of ±150% of motor parameters from the nominal values, the robust performance control problem is formulated as a LPV H_(unlimited) standard scheme and solved by a suboptimal Linear Matrix Inequality (LMI) iterative H_(unlimited) strategy. This new design method is able to ensure the stabilization of the augmented system formed of the perturbed system with improved performance in face of parameter variation and external disturbances. A Simulation study was carried out to illustrate the effectiveness of the proposed method. The results simulation are compared with a simple conventional PI controller
