Stochastic Stability of Mathieu-Van Der Pol System with Delayed Feedback Control

Abstract:

The asymptotic Lyapunov stability with probability one of Mathieu-Van der Pol system with time-delayed feedback control under wide-band noise parametric excitation is studied. First, the time-delayed feedback control force is expressed approximately in terms of the system state variables without time delay. Then, the averaged Itô stochastic differential equations for the system are derived by using the stochastic averaging method and the expression for the Lyapunov exponent of the linearized averaged Itô equations is derived. It is inferred that the Lyapunov exponent so obtained is the first approximation of the largest Lyapunov exponent of the original system, and the asymptotic Lyapunov stability with probability one of the original system can be determined approximately by using the Lyapunov exponent. Finally, the effects of time delay in feedback control on the Lyapunov exponent and the stability of the system are analyzed. The theoretical results are well verified through digital simulation.

• Periodical: Applied Mechanics and Materials (Volumes 105-107)
• Pages: 132-138
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.105-107.132
• Online since: September 2011
• Authors: Chang Shui Feng, Shuang Lin Chen
• Keywords: Delayed Feedback Control, Lyapunov Exponent, Stochastic Averaging, Stochastic Stability

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