Brief paper: Robustness of exponential stability of a class of stochastic functional differential equations with infinite delay

  • Authors:
  • Yangzi Hu;Fuke Wu;Chengming Huang

  • Affiliations:
  • School of Mathematics and Statistics, Huazhong University of Science and Technology, Wuhan 430074, PR China;School of Mathematics and Statistics, Huazhong University of Science and Technology, Wuhan 430074, PR China;School of Mathematics and Statistics, Huazhong University of Science and Technology, Wuhan 430074, PR China

  • Venue:
  • Automatica (Journal of IFAC)
  • Year:
  • 2009

Quantified Score

Hi-index 22.15

Visualization

Abstract

We regard the stochastic functional differential equation with infinite delay dx(t)=f(x"t)dt+g(x"t)dw(t) as the result of the effects of stochastic perturbation to the deterministic functional differential equation x@?(t)=f(x"t), where x"t=x"t(@q)@?C((-~,0];R^n) is defined by x"t(@q)=x(t+@q),@q@?(-~,0]. We assume that the deterministic system with infinite delay is exponentially stable. In this paper, we shall characterize how much the stochastic perturbation can bear such that the corresponding stochastic functional differential system still remains exponentially stable.