Patent ID: 6615367
Filing Date: 2003-09-02
Classification: G05B

Abstract:
A method for enhanced analysis of â€œno-trouble-found-eventsâ€  from one or more machines, wherein the â€œno-trouble-found-eventsâ€  designation is applied to those machine faults for which no cause could be identified, based on a first set of data, with equipment thus being characterized as being available for return to service with no remedial action being taken, but for which latent causes may exist that may recur when the equipment is returned to service, said method comprising:(a) receiving a first set of data representing the faults experienced by the one or more machines; (b) concluding based on the first set of data that there is a â€œno-trouble-found-eventâ€ ; (c) for the one or more machines, selecting a second set of data representing faults occurring within a predetermined time relative to the â€œno-trouble-found-eventâ€ ; (d) generating at least one distinct fault cluster based on said second set of data; and (e) determining the correlation between the â€œno-trouble-found-eventâ€  and the at least one distinct fault cluster to identify a root cause for the â€œno-trouble-found-eventâ€ .