• CN:11-2187/TH
  • ISSN:0577-6686

›› 2010, Vol. 46 ›› Issue (10): 81-87.

• 论文 • 上一篇    下一篇

混沌理论在汽车非线性系统中的应用进展

吴光强;盛云   

  1. 同济大学汽车学院;东京大学生产技术研究所
  • 发布日期:2010-05-20

Review on the Application of Chaos Theory in Automobile Nonlinear System

WU Guangqiang;SHENG Yun   

  1. College of Automotive Engineering, Tongji University Institute of Industrial Science, The University of Tokyo
  • Published:2010-05-20

摘要: 随着社会和科学技术的发展,非线性系统动力学问题的研究越显重要,其研究目的就是利用非线性动力学理论,阐明复杂力学现象的机理,研究在不同的初始条件和系统参数改变的情况下,系统的定性和定量变化规律。汽车作为一种工业产品的高度集成,其非线性因素无所不在,其中,又以行驶动力学中的非线性特征最为显著,其非线性因素主要集中在座椅、悬架和轮胎。目前,关于汽车行驶非线性动力学的混沌已有研究;另一方面,混沌理论也可用于汽车混沌振动信号的分离与检测。混沌的研究方法包括数值法、解析法以及统计描述法,而由于混沌运动的高度复杂性,大多数的研究都是以数值法为主。大量研究表明:汽车非线性系统具有非常丰富和复杂的动力学现象,即使最简单的单自由度汽车非线性垂向振动系统也可能出现混沌运动。并对一些近期值得关注的研究进行展望。

关键词: 动力系统, 非线性动力学, 混沌, 汽车

Abstract: There are various nonlinear factors included in actual dynamic systems. Along with the development of society and technologies, the research of nonlinear dynamics becomes more and more important. The aim of nonlinear dynamics is to clarify the mechanism of complex dynamic phenomenon, and study the qualitative and quantitative rules of dynamic system under different initial conditions and the variation of parameters by using nonlinear dynamic theories. As a kind of highly integrated industrial product, the automobile possess immanent nonlinear factors. The nonlinear characteristics of driving dynamics are the most remarkable. The nonlinear factors mainly concentrate on seats, suspensions and tires. Now the chaos related to automobile driving nonlinear dynamics is already researched. On the other hand, the chaos theory can also be used in the separation and detection of automobile chaotic vibration signals. Three types of methods, i.e. numerical method, analytical method and statistical description method, are introduced to the research of chaos phenomenon of nonlinear vehicle. Because of the complexity of chaotic motion, numerical method is used in most researches. A lot of researches indicate that the automobile nonlinear system has very abundant and complicated dynamic phenomena. Chaos motion may happen even in the simplest single-freedom nonlinear vertical vibration system of automobile. Finally, the review addresses a few prospective research topics in the near future.

Key words: Automobile, Chaos, Dynamic system, Nonlinear dynamics

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