A novel suspended method based on flux density feedback for AMB system without position sensors

A novel suspended method based on flux density feedback for AMB system without position sensors is presented in this paper. Ultra-thin Hall sensor is a part of the flux density feedback control with the function of detecting the flux density. According to the model of AMB rotor, position control-loop is realized with rotor position resolved from magnetic flux density and winding current. Flux density feedback control eliminates the model error caused by the inconsistencies between sensor target and AMB. With the novel approach, position sensors and detection target are not required; besides, size and weight of AMB system are reduced. It is of great benefit to miniaturization and integration for the space AMB system.