Magnetic bearing for body suspended in stator magnetic field - includes magnetisable components interacting with magnetisable body components, control loop contg. coil, position sensor

摘要

The bearing contains magnetisable components which interact with magnetisable components of the body (2) to produce a contactless, stable body position. An electronic controller and coil influence the magnetic force between the magnetisable components according to the output of a sensor of the distance between the body and stator A first electric coil (5) on the stator acts as a position sensor and as an electromagnetic control element in interaction with the magnetisable components of the suspended body. This coil is part of a high frequency measurement bridge contg. a reference impedance (6). USE/ADVANTAGE - Stable positioning of a body in a magnetic field is achieved with a simple, low-cost magnetic bearing of few components.