Robust control of magnetic bearing systems using μ-Synthesis with descriptor form

摘要

This paper is concerned with an analysis and design method for a robust controller of magnetic bearing system with parameter perturbations. We apply the method of μ-synthesis based on the descriptor form representation to a magnetic bearing system. The unmodeled dynamics and the sensitivity performance are taken into cosideration. By using this method, physical uncertainties are treated independently and a controller is designed to achieve not only robust performance but also robust disturbance suppressions.