The Averaging Principle. Fluctuations in Dynamical Systems with Averaging

Author(s):  
Mark I. Freidlin ◽  
Alexander D. Wentzell
2014 ◽  
Vol 19 (4) ◽  
pp. 1197-1212 ◽  
Author(s):  
Yong Xu ◽  
◽  
Rong Guo ◽  
Di Liu ◽  
Huiqing Zhang ◽  
...  

2003 ◽  
Vol 03 (03) ◽  
pp. 393-408 ◽  
Author(s):  
M. I. Freidlin ◽  
A. D. Wentzell

We consider the averaging principle for deterministic and stochastic perturbations of multidimensional dynamical systems for which coordinates can be introduced in such a way that the "fast" coordinates change in a torus (for Hamiltonian systems, "action-angle coordinates"). Stochastic perturbations of the white-noise type are considered. Our main assumption is that the set of action values for which the frequencies of the motion on corresponding tori are rationally dependent (and so the motion reduces to a torus of smaller dimension) has Lebesgue measure zero. Our results about stochastic perturbations imply some new results for averaging of purely deterministic perturbations.


2011 ◽  
Vol 240 (17) ◽  
pp. 1395-1401 ◽  
Author(s):  
Yong Xu ◽  
Jinqiao Duan ◽  
Wei Xu

2019 ◽  
Vol 2019 (1) ◽  
Author(s):  
Anas Dheyab Khalaf ◽  
Mahmoud Abouagwa ◽  
Xiangjun Wang

AbstractThis paper presents the periodic averaging principle for impulsive stochastic dynamical systems driven by fractional Brownian motion (fBm). Under non-Lipschitz condition, we prove that the solutions to impulsive stochastic differential equations (ISDEs) with fBm can be approximated by the solutions to averaged SDEs without impulses both in the sense of mean square and probability. Finally, an example is provided to illustrate the theoretical results.


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