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Stabilization, parameterization, and decoupling controller design for linear multivariable systems

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2 Author(s)
Ching An Lin ; Nat. Chiao-Tung Univ., Hsinchu, Taiwan ; Tung-Fu Hsieh

The authors study linear multivariable systems under the unity-feedback configuration. For nonsquare plants with no coincidence of unstable poles and zeros, they prove a simplified condition for closed-loop stability. The simplification leads to a simple description of the set of all achievable I/O maps and a single parameterization of all controllers achieving the same I/O map. The results are used to describe the set of all achievable decoupled I/O maps and prove a necessary and sufficient condition for the existence of stable decoupling controllers

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Automatic Control, IEEE Transactions on  (Volume:38 ,  Issue: 4 )