G - Physics – 01 – M
Patent
G - Physics
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G01M 17/00 (2006.01) G01M 17/02 (2006.01) G01M 17/06 (2006.01) G01P 3/56 (2006.01) G01P 3/66 (2006.01) G06F 17/40 (2006.01)
Patent
CA 2132161
APPARATUS AND METHOD FOR ON-VEHICLE MEASUREMENT OF WHEEL ROTATION TIME, RELATIVE VELOCITY AND RELATIVE PHASE Abstract Time of occurrence of an event, such as completion of rotation of a body, is determined by generating in response to the sensed occurrence of the event, a signal having a parameter whose value varies according to a predetermined function of time from an initial value at an initial time correlated to the time of occurrence of the event. At a subsequent time later than the initial time, a subsequent value of the parameter is determined and the time of occurrence of the event is determined by subtracting from the subsequent time, an amount of time calculating substantially according to the function as elapsing between the initial value and the subsequent value. By determining the times of completions of their respective rotations in this manner, the relative rotational phase and/or relative rotational velocities of rotating bodies, such as tire/wheel assembles of a moving vehicle, can be determined.
Beebe James C.
Fasnacht Glenn
Finlayson & Singlehurst
Illinois Tool Works Inc.
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