Tendency model-based improvement of the slave loop in cascade temperature control of batch process units

János Madár, Ferenc Szeifert, Lajos Nagy, Tibor Chován, János Abonyi

Research output: Contribution to journalArticle


The dynamic behaviour of batch process units changes with time and this makes their precision control difficult. The aim of this paper is to highlight that the slave process of batch process units can have a more complex dynamics than the master loop has, and very often this could be the reason for the non-satisfying control performance. Since the slave process is determined by the mechanical construction of the unit, the above mentioned problem can be effectively handled by a model-based controller designed using an appropriate nonlinear tendency model. The paper presents the structure of the tendency model of typical slave processes and presents a case study where real-time control results show that the proposed methodology gives superior control performance over the widely applied cascade PID control scheme.

Original languageEnglish
Pages (from-to)467-472
Number of pages6
JournalComputer Aided Chemical Engineering
Issue numberC
Publication statusPublished - Dec 1 2003


ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Computer Science Applications

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