Study on the supporting rigidness of the electromagnetic bearing for a high speed motor

The relationships among the linear supporting rigidness of electromagnetic bearings and system parameters and gap static bias magnetic flux density are analyzed here,With finite element method(FEM),gap static bias magnetic flux density and equal magnetic line distribution are obtained;consequently,the supporting rigidness is worked out.It is proved that supporting rigidness is isotropic,which offers the foundation for the electromagnetic bearing design for the high speed motor.