Modal Control Method for Rotors Supported by Active Magnetic Bearings based on a Condensed Reduced Model

The work presented in this paper exposes a new approach for the control of the dynamic behavior of flexible rotors for rotating machines supported by AMB. In order to perform this control, an accurate model of the structure reduced on the modes to be controlled and an accurate model of the AMB are used. An approach involving the use of a condensed reduced model is introduced. The identification approach presents the main advantage to be easy to realize, and efficient for control. An experimental identification of an accurate inverse model of the AMB is performed, as it is necessary for modal control. The results are exposed for a flexible beam, and validates the method experimentally.