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arXiv 2002.072672020-02math.OCmath.DS

Spectral dominance of complex roots for single-delay linear equations

Guilherme Mazanti, Islam Boussaada, Silviu-Iulian Niculescu, Tomáš Vyhlídal

备注：: arXiv admin note: substantial text overlap with arXiv:2002.06146
发表信息：: 21st IFAC World Congress. IFAC-PapersOnLine, 53(2):4357-4362, 2020
DOI：: 10.1016/j.ifacol.2020.12.062

英文摘要：

This paper provides necessary and sufficient conditions for the existence of a pair of complex conjugate roots, each of multiplicity two, in the spectrum of a linear time-invariant single-delay equation of retarded type. This pair of roots is also shown to be always strictly dominant, determining thus the asymptotic behavior of the system. The proof of this result is based on the corresponding result for real roots of multiplicity four, continuous dependence of roots with respect to parameters, and the study of crossing imaginary roots. We also present how this design can be applied to vibration suppression and flexible mode compensation.

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