Health monitoring
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United States of America Patent
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Aug 9, 2005
Grant Date -
Apr 4, 2002
app pub date -
Jul 5, 2001
filing date -
Jul 5, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
A method for monitoring the health of a system comprises performing at each of a plurality of times the steps of: constructing a condition signature from a plurality of condition indicators including (a) a plurality of vibration measurements acquired from the system or (b) one or more vibration measurements and one or more performance parameter measurements acquired from the system; predicting a normal signature from a model defining one or more inter-dependencies between said condition indicators, the normal signature corresponding to the condition signature for a healthy system; comparing the condition signature with the normal signature; and registering an event if the condition signature differs from the normal signature by more than a predetermined threshold.
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