Super-optimal Hankel-norm approximations
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It is well-known that optimal Hankel-norm approximations are seldom unique for multivariable systems. This comes from the Hankel-norm being somewhat of a crude criterion for the reduction of multivariable systems. In this paper, the strengthened condition originated with N. J. Young is employed to restore the uniquess. A statespace algorithm for the computation of super-optimal solution is presented.
KeywordsHankel Operator Lyapunov Equation Hankel Matrix Multivariable System Balance Realization
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