Dynamic precompensation and output feedback control of integrated process networks

M. N. Contou-Carrere, Prodromos Daoutidis

Research output: Contribution to journalConference articlepeer-review

4 Scopus citations

Abstract

In integrated process networks, the presence of large flowrates induces a time-scale separation of the dynamics where the individual units evolve in a fast time scale while the overall process evolves in a slow time scale. The slow dynamics of such networks are modeled by a high index differential algebraic equation system which, in the case of cascaded control configurations, has a control dependent state-space. We propose a minimal-order dynamic extension to obtain a modified DAE system of index two with a control invariant state-space that can be subsequently used as the basis for controller design. We illustrate this method for a distillation column with large recycle where the top and the bottom compositions are the key outputs to control.

Original languageEnglish (US)
Pages (from-to)2909-2914
Number of pages6
JournalProceedings of the American Control Conference
Volume4
StatePublished - Nov 29 2004
EventProceedings of the 2004 American Control Conference (AAC) - Boston, MA, United States
Duration: Jun 30 2004Jul 2 2004

Keywords

  • DAEs
  • Distillation column
  • Non-linear control
  • Process networks

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