Patent ID: 6359357
Filing Date: 2002-03-19
Classification: F16C

Abstract:
A combination radial and thrust magnetic bearing providing magnetic fields used to control a shaft in both radial and thrust axes comprising:(a) a rotor comprising a shaft, a first rotor pair having conical rotor elements separated from each other by a first spacer, and a second rotor pair having rotor elements separated from each other by a second spacer, said first rotor pair being separated from said second rotor pair by a sensor sleeve; and (b) a stator having first and second stator elements separated from each other by a magnet-sensor disk, said magnet-sensor disk having means to locate bias magnets and means to secure a plurality of position sensors, each of said first and second stator elements comprising: (i) an inner flux ring; (ii) an outer flux ring; (iii) a thrust coil; (iv) a plurality of split-poles with conically symmetric pole faces; and (v) a plurality of radial force coils, one for each of said plurality of split-poles and operatively connected thereto.