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On stability of quasipolynomials with annular uncertainties and interval commensurate delays. (English) Zbl 0902.93051

Summary: The paper concerns the Hurwitz stability of a family of quasipolynomials with commensurate delays. Each coefficient of the quasipolynomials belongs to a prescribed annulus in the complex plane, and the delay belongs to a prescribed real interval. A computationally tractable robust stability criterion is the main result of the paper.

MSC:

93D09 Robust stability
93C80 Frequency-response methods in control theory
34K35 Control problems for functional-differential equations
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