Abstract
Given any pair of stable fractional order polynomials with fixed commensurate order \(\alpha \), for \(0<\alpha <2\), a stable path joining them is provided by mean of convex combinations in the arguments and magnitudes of their roots. It is shown that any pair of paths obtained with this technique are homotopically equivalent. Consequently, a dense trajectory in the stable fractional order polynomials set has been exhibited. Finally, a stabilizing feedback control in terms of the continuous coefficients of the path has been designed and an illustrative example is given.
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First author wants to thank Iberoamerican University for the support in the realization of this paper.
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Research supported by CONACYT with the postdoctoral grant number 290941-UIA.
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López-Renteria, J.A., Fernández-Anaya, G. Robust Stability by Path-Connectivity of Fractional Order Polynomials. Acta Appl Math 145, 1–14 (2016). https://doi.org/10.1007/s10440-016-0047-4
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DOI: https://doi.org/10.1007/s10440-016-0047-4