Performance assessment and improvement of control charts for statistical batch process monitoring

Journal article (2006)

Authors

Henk Jan Ramaker Vrije Universiteit Amsterdam
Eric N.M. Van Sprang Vrije Universiteit Amsterdam
Henk Jan Ramaker Swammerdam Institute for Life Sciences
Eric N.M. Van Sprang Swammerdam Institute for Life Sciences
Johan A. Westerhuis Swammerdam Institute for Life Sciences
Stephen P. Gurden Swammerdam Institute for Life Sciences
Age K. Smilde Swammerdam Institute for Life Sciences
F.H. van der Meulen Vrije Universiteit Amsterdam
Affiliation
External organisation
Action signal time Bonferroni Control charts MSPC Overall type I error Statistical batch process monitoring
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Published Date

01-08-2006

Language

English

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Abstract

This paper describes the concepts of statistical batch process monitoring and the associated problems. It starts with an introduction to process monitoring in general which is then extended to batch process monitoring. The performance of control charts for batch process monitoring is discussed by means of two performance indices: the over-all type I error and the action signal time. Problems associated with the existing approach are discussed and highlighted. Improvements are suggested and checked with the performance indices. To evaluate the effect of the proposed improvements as well as to assess the performance of the existing approach, an industrial batch production process is used.