Wheel velocity sensor with exciter ring runout compensation

Details Wheel velocity sensor with exciter ring runout compensation Wheel velocity sensor with exciter ring runout compensation

G - Physics

01

P

329/21, 340/148.

G01P 3/48 (2006.01) G01P 3/481 (2006.01) H03H 7/06 (2006.01)

Patent

CA 1063209

WHEEL VELOCITY SENSOR WITH EXCITER RING RUNOUT COMPENSATION Abstract of the Disclosure A single-core wheel velocity sensor which is sub- stantially immune to exciter ring or wheel runout is pro- vided by a toroidal-shaped magnetic core, a winding on the core, a bias magnet placed adjacent to the core, an oscillator which supplies a high-frequency signal to the core winding and a sensing circuit comprising a differential input amplifier which has a first input terminal coupled to receive the output signal from the winding of the core through a circuit path which has a relatively low value capacitor coupled from the first terminal to ground and a second ter- minal which has a circuit path which has a relatively high value capacitor coupled from the second terminal to ground, wherein a relatively low value resistor shunts the low value capacitor and a relatively high value resistor shunts the high value capacitor.

252705

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