Analytical and Semi-analytical Solutions of Some Fundamental Nonlinear Stochastic Differential Equations
Analytical and Semi-analytical Solutions of Some Fundamental Nonlinear Stochastic Differential Equations
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一些基本非线性随机微分方程的解析和半解析解
DOI:
10.1016/j.piutam.2016.03.023
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发表时间:
2016
期刊:
影响因子:
--
通讯作者:
Kreuzer
中科院分区:
文献类型:
--
作者:
Dostal;Kreuzer
We are interested in perturbed Hamiltonian systems in a plane, which are damped and excited by an absolutely regular non-white Gaussian process. We use two methods for the determination of analytical and semi-analytical solutions to such nonlinear stochastic differential equations (SDE). The first method is based on a limit theorem by Khashminskii, from which a class of methods was derived known as stochastic averaging. From the drift and diffusion of the resulting averaged process, probability density functions and mean exit times can be easily obtained. The second method enables the determination of a Gaussian mixture representation for probability density functions of SDE's. This method was proposed by Pradlwarter and is known as Local Statistical Linearization. The error evolution of such Gaussian mixture shows promising results for further research.
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