Magnetic Bearings-Applications, Concepts and Theory

Abstract

Magnetic actuators are a typical mechatronic product and are being applied now as rotor bearings or as suspension systems in aerospace, in physics, and in industry. With the intention to give a survey we will show some examples that make use of the specific advantages of the magnetic suspension principle, referring especially to vacuum techniques and to vibration control. Some conceptual choices in the design will be discussed, as the question of analogue versus digital control. Theoretical problems, related to key functions of the magnetic bearing system, will be addressed, demonstrating actual solutions and indicating future trends.