Method of determining the direction of rotation of a member

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

G - Physics

01

P

G01P 13/04 (2006.01)

Patent

CA 2100226

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.

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