Journal of South China University of Technology (Natural Science Edition) ›› 2006, Vol. 34 ›› Issue (4): 24-27.

• Traffic & Transportation Engineering • Previous Articles     Next Articles

Road Identification in Automotive ABS Braking Process

Li Xi-ya1  Wu Gao-gui2  Hao Jun2  Zhou Quan2   

  1. 1.College of Mechanical Engineering,Dongguan Univ.of Tech.,Dongguan 523106,Guangdong,China;2.College of Automotive Engineering,South China Univ.of Tech.,Guangzhou 510640,Guangdong,China
  • Received:2005-03-17 Online:2006-04-25 Published:2006-04-25
  • Contact: 李熙亚(1967-)，女，副教授，主要从事汽车制动性能研究. E-mail:sea_r@tom.com
  • About author:李熙亚(1967-)，女，副教授，主要从事汽车制动性能研究.
  • Supported by:

    广州科技资助项目(2002C1390141)

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Abstract:

Road identification is very important to the correct implementation of automotive ABS(Anti-lock Brake System).The real-time recognition of adhesion coeficient for the road attached by each tire helps to adjust the bra-king force instantaneously,improve the using rate of the adhesion as well as the braking eficiency,and make the automotive ABS control more rational.In this paper,by using the equivalent pressure function of the wheel cylinder
during the ABS braking process,the slip coeficient of each tire is deduced by the time-depended pressure of the storage cylinder and the logic signal of the pressure control valve of the wheel cylinder and also with the angle acce-leration of wheel,brakeforce.As a result,the adhesion coefficient of each tire is obtained to identify the road condi-tion.The feasibility of the proposed method is finally verified by road tests.

Key words: Anti-Skid Brake System, road identification, adhesion coeficient, slip coeficient