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Optimal Bounded Control for Stationary Response of Strongly Nonlinear Oscillators under Combined Harmonic and Wide-Band Noise Excitations

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  • Yongjun Wu
  • Changshui Feng
  • Ronghua Huan

Abstract

We study the stochastic optimal bounded control for minimizing the stationary response of strongly nonlinear oscillators under combined harmonic and wide-band noise excitations. The stochastic averaging method and the dynamical programming principle are combined to obtain the fully averaged Itô stochastic differential equations which describe the original controlled strongly nonlinear system approximately. The stationary joint probability density of the amplitude and phase difference of the optimally controlled systems is obtained from solving the corresponding reduced Fokker-Planck-Kolmogorov (FPK) equation. An example is given to illustrate the proposed procedure, and the theoretical results are verified by Monte Carlo simulation.

Suggested Citation

  • Yongjun Wu & Changshui Feng & Ronghua Huan, 2011. "Optimal Bounded Control for Stationary Response of Strongly Nonlinear Oscillators under Combined Harmonic and Wide-Band Noise Excitations," Mathematical Problems in Engineering, Hindawi, vol. 2011, pages 1-21, September.
    • Handle: RePEc:hin:jnlmpe:635823
    DOI: 10.1155/2011/635823
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