An estimator for a class of non-linear distributed systems

Jesos Alvarez, George Stephanopoulos

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


The on-line estimation of unmeasured states in non-linear distributed systems faces considerable computational and implementation difficulties. In the present work an estimator is developed for a distributed system coupled through a highly non-linear term. The available secondary measurements and their time derivatives are used to preestimate the non-linear function. Then, the non-linearity is regarded as a known time dependent forcing term. The resulting estimation problem becomes linear, with a significant reduction of the computational scheme. The application of the method is illustrated with an example taken from the chemical industry; a tubular chemical reactor.

Original languageEnglish (US)
Pages (from-to)787-802
Number of pages16
JournalInternational Journal of Control
Issue number5
StatePublished - Nov 1982
Externally publishedYes

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Computer Science Applications


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