State Space Decoupling of Non-Minimum Phase Systems

Abstract The decoupling of the input - output behaviour of linear multivariable systems by constant state- feedback generally requires the compensation of all invariant zeros, which causes unstability in the case of non - minimum phase systems. The paper presents a method for partial but stable decoupling, ensuring without compensations coupling of only one output with several inputs. The application of a dynamic state-feedback however allows complete and stable decoupling with the disadvantage of an increased number of disagreeable transmission zeros.