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Subharmonic Resonance of Van Der Pol Oscillator with Fractional-Order Derivative

Author

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  • Yongjun Shen
  • Peng Wei
  • Chuanyi Sui
  • Shaopu Yang

Abstract

The subharmonic resonance of van der Pol (VDP) oscillator with fractional-order derivative is studied by the averaging method. At first, the first-order approximate solutions are obtained by the averaging method. Then the definitions of equivalent linear damping coefficient (ELDC) and equivalent linear stiffness coefficient (ELSC) for subharmonic resonance are established, and the effects of the fractional-order parameters on the ELDC, the ELSC, and the dynamical characteristics of system are also analysed. Moreover, the amplitude-frequency equation and phase-frequency equation of steady-state solution for subharmonic resonance are established. The corresponding stability condition is presented based on Lyapunov theory, and the existence condition for subharmonic resonance (ECSR) is also obtained. At last, the comparisons of the fractional-order and the traditional integer-order VDP oscillator are fulfilled by the numerical simulation. The effects of the parameters in fractional-order derivative on the steady-state amplitude, the amplitude-frequency curves, and the system stability are also studied.

Suggested Citation

  • Yongjun Shen & Peng Wei & Chuanyi Sui & Shaopu Yang, 2014. "Subharmonic Resonance of Van Der Pol Oscillator with Fractional-Order Derivative," Mathematical Problems in Engineering, Hindawi, vol. 2014, pages 1-17, February.
    • Handle: RePEc:hin:jnlmpe:738087
    DOI: 10.1155/2014/738087
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