Output feedback control of nonminimum-phase nonlinear processes

Costas Kravaris, Prodromos Daoutidis, Raymond A. Wright

Research output: Contribution to journalArticlepeer-review

59 Scopus citations

Abstract

This work concerns the development of a general framework for the analysis and output feedback control of open-loop stable nonminimum-phase nonlinear processes. A Smith-type abstract operator structure is introduced, allowing the reduction of the controller synthesis problem for nonminimum-phase processes to the one for minimum-phase processes. State-space methods are used to derive a reduced-order output feedback controller that induces a desired input/output behavior for processes with unstable inverse dynamics and deadtime. The underlying structure of the reduced-order controller is also identified and studied. Finally, an example from a class of chemical reaction systems with nonminimum-phase characteristics is used for evaluating the performance and robustness of the developed control method.

Original languageEnglish (US)
Pages (from-to)2107-2122
Number of pages16
JournalChemical Engineering Science
Volume49
Issue number13
DOIs
StatePublished - Jul 1994

Bibliographical note

Funding Information:
AcknowZedyemrnt~Financial support from the National Science Foundation, Grant No. CT%8912836 is gratefully acknowledged. The authors also wish to thank Masoud Soroush for his suggestions on the simulation example.

Fingerprint Dive into the research topics of 'Output feedback control of nonminimum-phase nonlinear processes'. Together they form a unique fingerprint.

Cite this