Bifurcations Induced in a Bistable Oscillator via Joint Noises and Time Delay

Author:

Fu Jin1,Sun Zhongkui1,Xiao Yuzhu2,Xu Wei1

Affiliation:

1. Department of Applied Mathematics, Northwestern Polytechnical University, Xi’an 710072, P. R. China

2. Department of Mathematics and Information Science, Chang’an University, Xi’an 710086, P. R. China

Abstract

In this paper, noise-induced and delay-induced bifurcations in a bistable Duffing–van der Pol (DVP) oscillator under time delay and joint noises are discussed theoretically and numerically. Based on the qualitative changes of the plane phase, delay-induced bifurcations are investigated in the deterministic case. However, in the stochastic case, the response of the system is a stochastic non-Markovian process owing to the existence of noise and time delay. Then, methods have been employed to derive the stationary probability density function (PDF) of the amplitude of the response. Accordingly, stochastic P-bifurcations can be observed with the variations in the qualitative behavior of the stationary PDF for amplitude. Furthermore, results from both theoretical analyses and numerical simulations best demonstrate the appearance of noise-induced and delay-induced bifurcations, which are in good agreement.

Funder

National Natural Science Foundation of China

Publisher

World Scientific Pub Co Pte Lt

Subject

Applied Mathematics,Modeling and Simulation,Engineering (miscellaneous)

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