Integrated Active Magnetic Bearings,

Three aspects of the structural and functional integration of electromagnetic bearings are presented: 1. In self-sensing bearings the rotor position is identified from the electric state variables directly at the power amplifiers. 2. The non-linearity of the magnetic force is compensated by software, integrated in the digital controller. 3. Adaptive control and compensation strategies are realized to minimize resonance phenomena. The necessary design cycle for integrating the procedures into micro-computers is described as well.