IMPROVED POSITION SENSOR UTILIZING MOVABLE FERROMAGNETIC ELEMENT

摘要

PROBLEM TO BE SOLVED: To provide a non-contact magnetic sensor for detecting a linear position or an angular position.SOLUTION: A non-contact magnetic sensor includes: a stator assembly; and a movable ferromagnetic element movable relative to the stator assembly and a position in that the stator assembly is detected. The stator assembly includes: at least first and second ferromagnetic components; at least a first permanent magnet; and at least one magnetic sensing element. At least one magnetic sensing element is designed to receive a magnetic field corresponding to a position of the movable ferromagnetic element and send out a measurement signal corresponding to the received magnetic field. The first permanent magnet is rigidly connected to the first ferromagnetic component. The ferromagnetic component forms at least first and second gaps with the movable ferromagnetic element. The first permanent magnet is rigidly connected to only the first ferromagnetic component. The two ferromagnetic components form at least a third gap between themselves. The magnetic sensing element is disposed in the third gap.