Patent ID: 6564119
Filing Date: 2003-05-13
Classification: B22D,G05B

Abstract:
A method for monitoring the operation of a continuous caster operating at a predetermined caster speed, the method including the following steps:acquiring off-line measurements of process parameters selecting training data from said off-line measurements of process parameters to represent normal operation of a continuous caster; development of a multivariate statistical model corresponding to normal operation of the continuous caster with input from said training data; generation of detection thresholds from said multivariate statistical model and from said off-line measurements of process parameters; acquiring on-line measurements of process parameters during operation of the continuous caster; and determining whether said on-line measurements of process parameters are consistent with normal operation of the continuous caster according to said multivariate statistical model, characterized in that said multivariate statistical model is used to calculate an output vector of scores with input from said on-line process parameters; test statistics are calculated from said vector of scores including calculating at least one univariate test statistic on one of said scores, and a multivariate test statistic on a selected number of said scores; and said at least one univariate test statistic and multivariate test statistic are compared to said detection thresholds to generate a detection signal, said detection signal being indicative of whether the continuous caster is operating normally and whether corrective action to control the caster speed is required.