Dynamic precompensation and output feedback control of integrated process networks

Marie Nathalie Contou-Carrere, Michael Baldea, Prodromos Daoutidis

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

In integrated process networks, the presence of large recycle flow rates induces a time scale separation where the individual units evolve in a fast time scale while the overall network evolves in a slow time scale. The slow dynamics of such networks is modeled by a high-index differential-algebraic equation (DAE) system which, in the case of cascaded control configurations, has a control-dependent state space. In this paper, a minimal-order dynamic extension is proposed to obtain a modified DAE system of index 2 with a control-independent state space that can be subsequently used as the basis for output feedback controller design. The application of this method is illustrated for a reactor-condenser network and for a two-point control problem in a high-purity distillation column.

Original languageEnglish (US)
Pages (from-to)3528-3538
Number of pages11
JournalIndustrial and Engineering Chemistry Research
Volume43
Issue number14
StatePublished - Jul 7 2004

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