Decoupling Controller Design for Linear Multivariable Plants

Ching-An Lin, Tung Fu Hsieh

Research output: Contribution to journalArticlepeer-review

26 Scopus citations


We study decoupling controller design for linear time-in- variant square MIMO plants under the unity-feedback configuration. For plants with no coincidences of unstable poles and zeros, we give a simplified necessary and sufficient condition for closed-loop stability. The simplified condition leads to a simple parametrization of the set of all achievable decoupled I/O maps and an algorithm which allows the design of decoupling controllers to achieve preassigned closed-loop poles.

Original languageEnglish
Pages (from-to)485-489
Number of pages5
JournalIEEE Transactions on Automatic Control
Issue number4
StatePublished - 1 Jan 1991

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