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

1975-08-08

1976-07-27

Heyman, John S.

Demodulators

Amplitude modulation demodulator

Having specific distortion, noise or other interference...

328141, 328147, 328165, 329112, H03H 706

Patent

active

039719952

ABSTRACT:
A single-core wheel velocity sensor which is substantially immune to exciter ring or wheel runout is provided 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 terminal 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.

REFERENCES:
patent: 2773181 (1956-12-01), Singel
patent: 2918577 (1959-12-01), Casey
patent: 3103633 (1963-09-01), Hartog
patent: 3218468 (1965-11-01), Dupire et al.
patent: 3417336 (1968-12-01), Cribbs et al.
patent: 3533101 (1970-10-01), Lauchner et al.
patent: 3553595 (1971-01-01), Walsh
patent: 3659116 (1972-04-01), Sellers et al.
patent: 3867706 (1975-02-01), Gili

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