Invention Grant
US09322638B2 Magnetic flux enhancer system between magnetic field generating means and rotor for reluctance type sensors 有权
用于磁阻式传感器的磁场产生装置和转子之间的磁通增强器系统

Magnetic flux enhancer system between magnetic field generating means and rotor for reluctance type sensors
Abstract:
A magnetic flux enhancer system for a reluctance type resolver and an electromagnetic angle sensor having the same are provided. The electromagnetic angle sensor has a stator (210) and a rotor (115) that is rotatably supported by a rotation axis on the stator and separated therefrom by a gap, the stator having at least one magnetic field generating means (220) adapted to generate a distribution of magnetic flux that extends over the gap to the rotor, and at least one magnetic field detecting means (220) adapted to detect a change in the magnetic flux distribution caused by a rotation of the rotor. The electromagnetic angle sensor comprises a magnetic flux enhancer (230) adapted to be positioned on a side of the at least one magnetic field generating means that faces the rotor and to concentrate the generated distribution of magnetic flux over the gap along a radial direction substantially perpendicular to the rotation axis.
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