Block-decoupling linear multivariable systems: Necessary and sufficient conditions

Abstract

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. (C) 1998 Elsevier Science Ltd. All rights reserved.