Abstract
A problem of stabilization of unstable cycles is solved in this paper using delay feedback at the example of a model equation with cubic nonlinearity. We consider the case when, in a problem without control, exactly one multiplicator of the cycle is located outside the unit circle. The delay time is selected proportional to the period of the initial cycle so that, in the problem with control, the initial solution should still exists. The D-partition is obtained for the plane of the complex coefficient of the delayed control. The main result consists in analytically found conditions for parameters of the delayed feedback control (coefficient and delay time) under which the initial periodic solution becomes stable. The necessary and sufficient conditions for proper parameters of the problems under which the stabilization problem is solvable are also determined. As a consequence, the problem of stability of the Stuart-Landau equation cycle is completely solved.
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Original Russian Text © V.G. Bogaevskaya, I.S. Kashchenko, 2014, published in Modelirovanie i Analiz Informatsionnykh Sistem, 2014, No. 1, pp. 53–65.
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Bogaevskaya, V.G., Kashchenko, I.S. Influence of delayed feedback control on the stability of periodic orbits. Aut. Control Comp. Sci. 48, 477–486 (2014). https://doi.org/10.3103/S0146411614070037
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DOI: https://doi.org/10.3103/S0146411614070037