METHOD AND APPARATUS FOR DIAGNOSING DIFFICULT TO DIAGNOSE FAULTS IN A COMPLEX SYSTEM

摘要

A method and apparatus for determining the root cause of no trouble found events in a machine is disclosed. The actual faults occurring during a predetermined time interval prior to the no trouble found event are analyzed and correlated with the no trouble found events in an effort to identify tho se actual faults that have a high correlation with each no trouble found event. If a high correlation is not found, then the no trouble found event is analyzed off-line to determine the root cause.