Magnetic bearing system, comprising a servo-system for regulating the electromagnetic action of the bearing system, and electric motor coupled to the bearing system.

摘要

A magnetic bearing system provided with a stator part (2), rotor part (1) and servo system (16 - 20) arranged to regulate the electromagnetic action whereby the stator part (2) and rotor part (1) are held at certain distance from each other. In said servo system use is made of electro magnetic sensors (11 - 15) by means of which variation in distances results into electric control signals on the basis of which the distances between rotor (1) and stator part (2) being controlled. The principle of the present invention is to derive such control signal by electro-optical means i.e. by fiber optical means (11 - 15) for conveying light rays along separate paths to and from an interval between the stator and rotor part of the bearing system.