摘要
研究了具有滞后非线性的汽车悬架系统在路面随机激励下发生混沌运动的可能性,推导了随机Melnikov过程,得到了均方意义下出现混沌运动的临界激励幅值,并讨论了噪声对系统混沌运动的影响。通过最大L ya-punov指数和Poincare截面进行了数值验证。研究结果表明,汽车在正常行驶时不会出现混沌运动。
This paper presents the investigation of chaos in a one DOF vehicle suspension system with hysteretic nonlinearity, which is subjected to the road stochastic excitation. The random Melnikov process is derived. The necessary critical condition in the sense of mean-square is obtained and the effect of noise on the onset of chaos is studied. The conclusion obtained by Melnikov method is also verified via numerical methods, including the largest Lyapunov exponent and Poincare map. It is concluded that chaos does not occur when the vehicle runs normally, while when the vehicle comes across protruding slope chaos may occur.
出处
《振动．测试与诊断》
EI
CSCD
2005年第1期22-25,共4页
Journal of Vibration,Measurement & Diagnosis
基金
国家自然科学基金资助项目 (编号 :10 172 0 6 0
10 4 72 0 73)
