Outlook and limitations of active magnetic bearing, their application to turbomolecular vacuum pump

Magnetic bearings are being used increasingly in various industrial fields. Their unique features make them attractive for solving rotor suspension problems and allow us to find new approaches in the design of rotating machinery components. By using magnetic bearings classical constraints can be overcome, and the range of characteristics can be extended. But in the art are still problems caused by the current state of science and technology. To assist in the development and design of magnetic bearings and their application in turbo molecular pumps (TMP) in this article discusses these problems.