(A, B)-invariant and stabilizability subspaces, a frequency domain description |
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| Authors: | M.L.J. Hautus |
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| Abstract: | In a paper of E. Emre and the author a polynomial characterization for (A, B)-invariant subspaces is given. The characterization is used to give a frequency domain criterion for the solvability of the disturbance decoupling problem. In this paper a more elementary and simpler treatment is given. Furthermore, stabilizability subspaces are introduced, are given a frequency domain characterization and are used to solve design problems. |
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| Keywords: | Disturbance rejection feedback frequency response invariance linear systems multivariable systems state-space methods |
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