Off-line diagnosis of deterministic faults in continuous dynamic multivariable processes using speech recognition methods

Faults or special events which occur occasionally in continuous processes generate dynamic patterns in a large number of process variables. However, the patterns arising from the same fault can exhibit different time durations (depending on the operating conditions), magnitudes and directions. Any robust fault diagnosis method must be able to correctly classify these faults under these different conditions. This paper presents an off-line fault …