On Stability Switches and Bifurcation of the Modified Autonomous Van der Pol–Duffing Equations via Delayed State Feedback Control

This paper considers the Modified Autonomous Van der Pol–Duffing equation subjected to dynamic state feedback, which can well characterize the dynamic behaviors of the nonlinear dynamical systems. Both the issues of local stability switches and the Hopf bifurcation versus time delay are investigated...

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Bibliographic Details
Published in:Symmetry (Basel) 2021-12, Vol.13 (12), p.2336
Main Authors: Cai, Tiao-Yang, Jin, Hui-Long, Yu, Hong, Xie, Xiang-Peng
Format: Article
Language:English
Subjects:
center manifold theory
Cubic equations
Decomposition
Duffing equation
Dynamic stability
Feedback control
Hopf bifurcation
Nonlinear systems
Operators (mathematics)
stability switches
State feedback
Switches
Time lag
τ-decomposition method
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Summary:This paper considers the Modified Autonomous Van der Pol–Duffing equation subjected to dynamic state feedback, which can well characterize the dynamic behaviors of the nonlinear dynamical systems. Both the issues of local stability switches and the Hopf bifurcation versus time delay are investigated. Associating with the τ decomposition strategy and the center manifold theory, the delay stable intervals and the direction and stability of the Hopf bifurcation are all determined. Specifically, the computation of purely imaginary roots (symmetry to the real axis), the positive real root formula for cubic equation and the sophisticated bilinear form of adjoint operators are proposed, which make the calculations mentioned in our discussion unified and simple. Finally, the typical numerical examples are shown to illustrate the correctness and effectiveness of the practical technique.
ISSN:2073-8994
2073-8994
DOI:10.3390/sym13122336