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Position: Home > Articles > Numerical Analysis of Hopf Bifurcation Character of Automobile Stability Agricultural Equipment & Vehicle Engineering 2010,2010 (4) 3-7

汽车整车稳定性的Hopf分岔特性数值分析

作  者:
贺丽娟;李庆军
单  位:
天津科技大学机械工程学院;军事交通学院汽车工程系
关键词:
汽车工程;操纵稳定性;前轮摆振;Hopf分岔
摘  要:
以独立悬架汽车为研究对象,利用分析力学方法,建立整车扩展的三自由度操纵模型,利用常微分方程稳定性理论和数值分析,对具有不同转向特性汽车的自激型摆振分岔特性进行了分析。研究表明:具有不同转向特性汽车在一定的参数组合下都会表现出自激型摆振的性质,即自激型摆振是一种非线性动力学Hopf分岔后出现的稳定极限环振动现象。
译  名:
Numerical Analysis of Hopf Bifurcation Character of Automobile Stability
作  者:
HE Li-juan1,Li Qing-jun2(1.School of Mechanical Engineering,Tianjin University of Science & Technology,Tianjin 300222,China;2.Automobile Engineering Department,Academy of Military Transportation,Tianjin 300161,China)
关键词:
automobile engineering;handling stability;front wheel shimmy;Hopf bifurcation
摘  要:
The dynamic model of three degrees of freedom is constructed for an automobile with independent suspension by analytical mechanics.The bifurcation character of self-excited shimmy for an automobile with different steady character is studied by the stability theory of ordinary differential equations and numerical analysis method.The result shows that the self-excited shimmy occurs for an automobile with different steady character under specifical parameters and the self-excited shimmy is an vibration of stable limit cycle occurring after Hopf bifurcation in dynamics.

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