Method of determining the direction of rotation of a member usin

Details Method of determining the direction of rotation of a member usin Method of determining the direction of rotation of a member usin

1992-07-27

1993-11-23

Strecker, Gerard R.

Electricity: measuring and testing

Electrical speed measuring

Including speed analog electrical signal generator

324166, 32420722, 32420725, 340672, 341 6, 364565, G01P 1304, G01P 344

Patent

active

052647897

ABSTRACT:
A method of determining the direction of rotation of a member (17) is closed, wherein the member has a speed pick-up rotor (27) having a plurality of teeth or exciter surfaces (29). The rotor has a predetermined pattern of gaps (37,73) and groups of teeth, each group of teeth having a number of teeth which is different than the number in any other group. As the rotor rotates, the pattern of gaps and teeth is sensed, and compared to a predetermined pattern. Depending upon the results of the comparison, the logic generates either a signal (61) representing clockwise rotation, or a signal (65) representing counter-clockwise rotation.

REFERENCES:
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patent: 4760827 (1988-08-01), Schreiber et al.
patent: 4972332 (1990-11-01), Luebbering et al.
patent: 5086272 (1992-02-01), Hinrichsen
patent: 5095269 (1992-03-01), McNinch, Jr.

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