Speed sensor including output signal proportional to air gap siz

Details Speed sensor including output signal proportional to air gap siz Speed sensor including output signal proportional to air gap siz

1993-07-30

1995-07-11

O'Shea, Sandra L.

Electricity: measuring and testing

Electrical speed measuring

Including speed-related frequency generator

324160, 324173, 324166, G01P 342, G01P 348, G01P 354

Patent

active

054324424

ABSTRACT:
An air gap detector for use in antilocking brake systems includes an active integrator that integrates an output signal from a wheel speed sensor, that depends in part on the relative spacing between the wheel axle and its associated bearing, to thereby produce a signal that is inversely proportional to the air gap between the axle and bearing. The integrated signal is processed by peak detecting means to produce a peak signal that is proportional to the size of the air gap. The peak signal is then amplified and adjusted to produce a D.C. signal that is proportional to the size of the air gap.

REFERENCES:
patent: 4274054 (1981-06-01), Savidge et al.
patent: 4764685 (1988-08-01), Bleckmann
patent: 4972145 (1990-11-01), Wood et al.
patent: 5001363 (1991-03-01), Arami
patent: 5012207 (1991-04-01), Edwards
patent: 5130651 (1992-07-01), Morrey, Jr.

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