Frequency-truncation fast-slow analysis for parametrically and externally 
excited systems with two slow incommensurate excitation frequencies

Han, X.; Liu, Yang; Bi, Q.; Kurths, Jürgen

doi:10.1016/j.cnsns.2018.12.007

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Frequency-truncation fast-slow analysis for parametrically and externally excited systems with two slow incommensurate excitation frequencies

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Han, X.
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Liu, Yang
Potsdam Institute for Climate Impact Research;

Bi, Q.
External Organizations;

/persons/resource/Juergen.Kurths

Kurths, Jürgen
Potsdam Institute for Climate Impact Research;

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Zitation

Han, X., Liu, Y., Bi, Q., Kurths, J. (2019): Frequency-truncation fast-slow analysis for parametrically and externally excited systems with two slow incommensurate excitation frequencies. - Communications in Nonlinear Science and Numerical Simulation, 72, 16-25.
https://doi.org/10.1016/j.cnsns.2018.12.007

Zitierlink: https://publications.pik-potsdam.de/pubman/item/item_23619

Zusammenfassung

This paper aims to report an approximation method, the frequency-truncation fast-slow analysis, for analyzing fast-slow dynamics in parametrically and externally excited systems with two slow incommensurate excitation frequencies (PEESTSIEFs). We obtain truncated, commensurate excitation frequencies, which are approximations of the incommensurate excitation frequencies. Then, we show numerically that bursting behavior in PEESTSIEFs can be approximated in the same systems but with truncated, commensurate excitation frequencies, and therefore bursting dynamics in PEESTSIEFs can be understood by analyzing the same systems with truncated, commensurate excitation frequencies. Based on this, the approximation method for analyzing bursting dynamics in PEESTSIEFs is proposed. The validity of the approach is demonstrated by the Duffing and van der Pol systems, respectively.