On a Property of Compensators Designed by the Separation Principle

Bernard Friedland, Sophia E. Mentzelopoulou, George E. Antoniou

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


The transfer function of a full-order compensator for a single-input, single-output (SISO) linear system designed by the separation principle is uniquely determined by the locations of the poles of the closed-loop system and its gain. Hence, the poles of the observer and of the full-state feedback design can be interchanged without altering the transfer function of the compensator. A state space derivation of this property is presented.

Original languageEnglish
Pages (from-to)370-373
Number of pages4
JournalIEEE Transactions on Automatic Control
Issue number2
StatePublished - Feb 1993


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