Method of detecting oscillations
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United States of America Patent
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-
Sep 30, 2003
Grant Date -
Jun 7, 2001
app pub date -
Nov 29, 2000
filing date -
Dec 2, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Oscillations of a variable quantity, particularly of the rpm rate of an input shaft of a cone-pulley transmission in the power train of a vehicle, are detected by monitoring the rate of change of the variable quantity during time intervals of a predetermined length. The difference between the maximum and minimum levels that the rate of change reaches during the predetermined time period is compared to a threshold reference, and if it is found to exceed the threshold reference, the variable quantity is judged to be in a state of oscillation.
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