华南理工大学学报(自然科学版) ›› 2006, Vol. 34 ›› Issue (4): 24-27.

• 交通运输工程 • 上一篇    下一篇

汽车ABS制动过程的道路识别

李熙亚1 吴诰珪2 廖俊2 周全2   

  1. 1.东莞理工学院 机械学院,广东 东莞 523106;2.华南理工大学 汽车工程学院,广东 广州 510640)
  • 收稿日期:2005-03-17 出版日期:2006-04-25 发布日期:2006-04-25
  • 通信作者: 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
  • 作者简介:李熙亚(1967-),女,副教授,主要从事汽车制动性能研究.
  • 基金资助:

    广州科技资助项目(2002C1390141)

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)

摘要: 汽车ABS控制的效果与道路识别有着重要关系,在制动过程中实时对各轮胎所附着道路的附着系数进行识别,可及时地调整制动力,提高道路的附着利用率和制动效能.使汽车ABS控制更加合理.文中通过试验获得了ABS制动过程轮缸的可等效压力函数,由储气缸压力和轮缸压力控制阀开关信号的时间历程,推导出各轮的滑移率,进而得出附着系数,实现了道路识别.道路试验检测验证了该方法的可行性.

关键词: 防抱制动系统, 道路识别, 附着系数, 滑移率

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