23rd European Symposium on Computer Aided Process Engineering

Reliability of operating window identified from process data

Heimo Ihalainen^a, Risto Ritala^a and Olli Saarela^b,    ^aTampere University of Technology, Department of Automation Science and Technology, P.O.Box 692, FIN-33101 Tampere, Finland, ^bVTT Technical Research Centre of Finland, P.O.Box 1000, FIN-02044 VTT, Finland

Abstract

This paper discusses data-based operating windows as a tool for process management and development. In particular identification of the operating window and its uncertainty are analyzed. The operating window is determined by maximizing either the mutual information (static) or entropy transfer (dynamic). An industrial example shows that the entropy of the indicator variable is reduced to half by an operating window specified ...