Identification and Modeling of AMB Rotor System Using Complex Lead and Lag Compensator Structures

Control design of AMB rotor system demands very accurate system model. Modeling of the rotor is traditionally made using Finite Element Method (FEM) or Experimental Modal Analysis (EMA), but Active Magnetic Bearings (AMB) offer a possibility to obtain the model using system identification. The purpose of this study is to identify the flexible modes of the rotor and determine its transfer function model using complex lead and lag compensator structures. The results demonstrate that the proposed method suits for modeling the flexible modes of an AMB rotor system.