This paper presents a theoretical investigation on operation mode and load sharing strategy of hybrid foil-magnetic bearings (HFMBs). According to the inherent characteristics gas foil (GFBs) active magnetic (AMBs), six possible work scopes are discussed understand HFMBs. A numerical model coupling calculations film pressure in GFBs forces AMBs is conducted predict performance The accuracy prov...

The design and application of a patented active actuator design that combines the radial and axial actuator into one combination radial-axial actuator is presented. The theory of operation of the actuator is defined and magnetic finite element analysis modeling shown verifying operation. Its mechanical construction is then presented to show how this actuator configuration is successfully integr...

In this paper we present a design procedure for disturbance attenuation with internal stability of a rotor supported by mag netic bearings over the whole interval of the rotor operating speeds The nonlinear gyroscopic equations can be simpli ed to a set of linear time varying di erential equations owing to the linear dependence of the rotor speed in the plant dynam ics For rotors operating in h...

Two types of passive magnetic lift bearings were evaluated in terms of thrust force and eddy current losses. The first type of bearings were based on two sets of segmented Halbach arrays mounted in repulsive mode, and the second type was based on ring-magnets. The eddy-currents studied arose in the bearing due to manufacturing variations of magnetic remanence, and due to non-radial magnetizatio...