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Model reduction of high order linear-in-parameters discrete-time systems is considered. The main novelty of the paper is that the coefficients of the original system model are assumed to be known only within given intervals, and the coefficients of the derived reduced order model are also obtained in intervals, such that the complex value sets of the… (More)
The problem of finding the minimum-phase spectral factor of a polynomial is considered. A numerical algorithm is proposed, based on the least squares inverse and approximate polynomial greatest common divisor procedures, which solves the problem in an efficient way. Examples are provided.