Method of monitoring a transmission assembly of a vehicle equipped with acceleration sensors, in particular a helicopter
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United States of America Patent
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-
Feb 29, 2000
Grant Date -
N/A
app pub date -
Jul 6, 1998
filing date -
Jul 4, 1997
priority date (Note) -
In Force
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Abstract
The monitoring method includes the steps of: acquiring a signal from an acceleration sensor; calculating a transform in the frequency domain of the signal to obtain a sequence of samples; acquiring a sample in the sequence of samples; calculating an actual amplitude value of the acquired sample; calculating a relative deviation between the actual amplitude value of the acquired sample and a reference amplitude value; and comparing the relative deviation with at least one predetermined threshold to immediately detect any irregularity in, and so prevent in-flight failure of, the helicopter transmission assembly.
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