Two-port control system: A generalized predictive controller

George Stephanopoulos, Hsiao Ping Huang

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


The two-port control system is introduced to develop the design framework for multivariable predictive controllers. It constitutes a general form for all two-degrees-of-freedom control systems and is particularly suited for the optimum resolution of controller design trade-offs, such as performance to command following versus disturbance rejection, and performance in the presence of various disturbance inputs. It allows the handling of systems with non-minimum phase characteristics or inherently unstable open-loop dynamics. Finally, it offers the necessary and sufficient conditions for the design of effective adaptive control strategies.

Original languageEnglish (US)
Pages (from-to)617-639
Number of pages23
JournalInternational Journal of Control
Issue number2
StatePublished - Feb 1987
Externally publishedYes

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Computer Science Applications


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