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.
