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Modeling and control of rotating shaft with magnetic bearings

The paper presents control system for positioning of rotating shaft ends with magnetic bearings. Problem of identification and modelling is presented as well as control algorithms. The main difficulty of the control are disturbances caused by rotation (controlled by push-pull drivers) of the shaft. Weighted minimumvariance controller has been applied and compared with built-in PD controllers. The key-issue of the approach is using linear adapted model of the rotary machine.