Patent ID: 6321216
Filing Date: 2001-11-20
Classification: G05B,G06N,Y10S

Abstract:
A method for analyzing and displaying process variables, process states or sequences of process states in a technical plant by performing a topology-producing projection of data of relevant process variables on a two-dimensional Kohonen map, which comprises:initially displaying a sequence of process states as a reference trajectory by graphically interconnecting neurons representing respective process states resulting in displayed process states;forming at least one further trajectory by graphically connecting the displayed process states;displaying the at least one further trajectory for assessing current sequences of process states;displaying a plurality of trajectories one above the other, for permitting a comparison of process courses; andpermitting a manual process analysis, once a user has selected map portions having the greatest deviation between two trajectories, by performing the following additional steps:a) calculating a standard deviation of a distribution of weight of selected neurons, and outputting weight indices having the greatest deviations from one another; andb) ascertaining process variables on which the weight indices of the neurons are based and which cause the most trajectory deviations on the map.