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Proceedings Paper

Research on random vibration control of vehicle based on semi-active suspension system
Author(s): Jia Xu; Hong-Li Wang; Zhi-Wen Zhu; Gen Ge
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Paper Abstract

In this paper, a new research for semi-active suspension system of vehicle is proposed. Assuming the stochastic excitations are Gauss white noises, we establish a stochastic model on semi-active suspension system. Here we consider two kinds of stochastic excitations: one is the inner multiplicative excitation broug-ht by the inner system such as the spring and damper, the other is the outer excitation brought by outside world. The model we defined is considered as a weak damp and weak excitation quasi Hamiltonian system. The max Lyapunov exponent was calculated by quasi non-integrable Hamiltonian theory and Oseledec multiplicative ergodic theory, the local stability conditions had been obtained; the global stability conditions had also been obtained by judging the modality of the singular boundary; the stochastic Hopf bifurcation was analyzed from the sharp change of stable probability density, and the condition of stochastic Hopf bifurcation had been discussed.

Paper Details

Date Published:
PDF: 6 pages
Proc. SPIE 6794, ICMIT 2007: Mechatronics, MEMS, and Smart Materials, 679453; doi: 10.1117/12.784131
Show Author Affiliations
Jia Xu, Tianjin Univ. (China)
Hong-Li Wang, Tianjin Univ. (China)
Zhi-Wen Zhu, Tianjin Univ. (China)
Gen Ge, Tianjin Univ. (China)


Published in SPIE Proceedings Vol. 6794:
ICMIT 2007: Mechatronics, MEMS, and Smart Materials

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