Lyapunov function construction for nonlinear stochastic dynamical systems

作者：Ling, Q.; Jin, X. L.; Wang, Y.; Li, H. F.; Huang, Z. L.^*

来源：Nonlinear Dynamics, 2013, 72(4): 853-864.

DOI：10.1007/s11071-013-0757-3

• Lyapunov function
• Nonlinear stochastic dynamical systems
• Multi-degree-of-freedom systems
• Stochastic stability

Though the Lyapunov function method is more efficient than the largest Lyapunov exponent method in evaluating the stochastic stability of multi-degree-of-freedom (MDOF) systems, the construction of Lyapunov function is a challenging task. In this paper, a specific linear combination of subsystems' energies is proposed as Lyapunov function for MDOF nonlinear stochastic dynamical systems, and the corresponding sufficient condition for the asymptotic Lyapunov stability with probability one is then determined. The proposed procedure to construct Lyapunov function is illustrated and validated with several representative examples, where the influence of coupled/uncoupled dampings and excitation intensities on stochastic stability is also investigated.

• 出版日期2013-6
• 单位浙江大学