A novel approach to dynamic modelling of polymer extrusion for improved process control

Marion McAfee, Stephen Thompson

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

Polymer extrusion is a complex process and the availability of good dynamic models is key for improved system operation. Previous modelling attempts have failed adequately to capture the non-linearities of the process or prove too complex for control applications. This work presents a novel approach to the problem by the modelling of extrusion viscosity and pressure, adopting a grey box modelling technique that combines mechanistic knowledge with empirical data using a genetic algorithm approach. The models are shown to outperform those of a much higher order generated by a conventional black box technique while providing insight into the underlying processes at work within the extruder.
Original languageEnglish
Pages (from-to)617-628
Number of pages12
JournalProceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering
Volume221 (4)
Issue number4
DOIs
Publication statusPublished - Jan 2007

ASJC Scopus subject areas

  • Control and Systems Engineering

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