Abstract.
This paper derives exact formulas for singular values and vectors of Hankel operators whose symbol is a product of a single-input single-output inner function and a multi-input multi-output rational function. This class of Hankel operators arises from the sensitivity minimization H ∞ control problem with a rational weight function and the approximation problem of transfer functions having rational outer parts. It is shown that there is a Hamiltonian transcendental equation characterizing singular values which leads to a matrix function formula for singular vectors.
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Date received: May 12, 1998. Date revised: May 14, 1999.
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Ohta, Y. Hankel Singular Values and Vectors of a Class of Infinite-Dimensional Systems: Exact Hamiltonian Formulas for Control and Approximation Problems. Math. Control Signals Systems 12, 361–375 (1999). https://doi.org/10.1007/PL00009857
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DOI: https://doi.org/10.1007/PL00009857