METHOD AND SYSTEM FOR FAILURE CAUSE ANALYSIS IN A PROCESS PLANT

摘要

For fault causation analysis in a process engineering plant (1),engineering information (18) of the plant (1),which information on the plant components and their interconnection in the plant (1) is provided in digital form to create from the engineering information (18) an inference model (30) in the form of a probabilistic physical model of the plant (1) with probability distributions and prior variables. In a diagnostic mode (40) of the Inferenmodell (30), a Bayesian inference of error probabilities is performed using measurement data from the system (1).