Inductive sensor for radial magnetic bearing

摘要

The inductive sensor comprises a plurality of pairs of elementary position detectors. Each detector consists of a "U"-shaped piece 2 made of ferrite or ferromagnetic material, around which is wound an induction coil 3, and interacts with a reference ring 10 made of a conducting material situated in the same sectional plane and integral with the rotor 1. The reference ring 10 is mounted in an insulation bush 11 made of a non-magnetic material with a high electrical resistivity attached to the rotor 1 in order to isolate the reference ring 10 magnetically with respect to the rotor 1. <IMAGE>