Block-decoupling linear multivariable systems: Necessary and sufficient conditions

Ching-An Lin*, Chang Ming Wu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


We study block decoupling of linear multivariable systems under unity-feedback configuration. We consider plants which have unstable pole-zero coincidences and give necessary and sufficient conditions for the existence of the block decoupling controllers. The conditions are particularly simple for plants with only simple unstable pole-zero coincidences. An illustrative example is given.

Original languageEnglish
Pages (from-to)237-243
Number of pages7
Issue number2
StatePublished - Feb 1998


  • Block decoupling
  • Internal stability
  • Linear multivariable systems

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