Method to sense speed, direction and acceleration for a rotating

Details Method to sense speed, direction and acceleration for a rotating Method to sense speed, direction and acceleration for a rotating

1997-12-05

1999-11-02

Patidar, Jay

Electricity: measuring and testing

Electrical speed measuring

Including speed analog electrical signal generator

324174, 324178, G01P 352, G01P 1300

Patent

active

059777648

ABSTRACT:
A method is provided for determining the speed and direction of a rotating shaft. A rotor is connected to the shaft. The rotor includes three circumferentially spaced teeth, the first of said teeth having a first center spacing, the second of said teeth having a second center spacing different than the center spacing of the first tooth, and the third of said teeth having a third center spacing different than the center spacing of the second tooth. The centers of each of said teeth is sensed and a signal is produced in response thereto. A first time period to reach the center of the first tooth, a second time period to reach the center of the second tooth and a third time period to reach the center of the third tooth are determined, then the speed and direction of rotation of the shaft are established.

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Sales brochure "Custom Variable Reluctance Sensors", American Electronic Components, Inc., Elkhart, IN. Date not available.

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