| 摘要 |
A magnetic bearing apparatus wherein a can made of a non-magnetic material is disposed between a rotor and a stator, and the rotor is supported in a levitational manner by a magnetic force from an electromagnet provided on a stator-side member. A yoke of the electromagnet is disposed to extend through the can, or a magnetic member is buried in a portion of the can which the yoke of the electromagnet faces, so that the yoke faces a target on the rotor directly or through the magnetic member in a non-contact manner. Accordingly, the magnetic gap between the yoke and the target decreases correspondingly, and hence the magnetic reluctance reduces. Therefore, it becomes possible to reduce the size of the electromagnet. <IMAGE> |
