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

Yongjun Wu | Zendy; Changshui Feng | Zendy; Ronghua Huan | Zendy

Open Access

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

Author(s) -

Yongjun Wu,

Changshui Feng,

Ronghua Huan

Publication year - 2011

Publication title -

mathematical problems in engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.262

H-Index - 62

eISSN - 1026-7077

pISSN - 1024-123X

DOI - 10.1155/2011/635823

Subject(s) - nonlinear system , mathematics , bounded function , monte carlo method , noise (video) , stochastic differential equation , harmonic , amplitude , control theory (sociology) , statistical physics , mathematical analysis , physics , computer science , quantum mechanics , control (management) , statistics , artificial intelligence , image (mathematics)

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

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