Patent ID: 9366549
Filing Date: 2016-06-14
CPC Classification: B60T,F16D,G01D,G01R

Claim Text:
1. A sensor system comprising: a magnetic circuit comprising a coil; a magnet; at least one of a ferromagnetic armature plate and a conductive armature plate, wherein the at least one of the ferromagnetic armature plate and the conductive armature plate is configured to move axially in response to at least one of the magnet and the coil; and a controller configured to apply a known first voltage across the coil and monitor a current through the coil; an inner pole; and an outer pole, wherein the coil is in proximity to at least one of the inner pole and the outer pole, and the magnet is disposed between a first portion of the inner pole and a first portion of the outer pole, and the at least one of the ferromagnetic armature plate and the conductive armature plate is disposed in axial proximity to a second portion of the inner pole and a second portion of the outer pole, forming the magnetic circuit, wherein the ferromagnetic armature plate is configured to move axially.