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Article Navigation> JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY> 2005> 14(1): 67-70
QI Zhi-quan, LIU Zhao-du, ZHANG Jing-bo, MA Yue-feng. New Method of Road Surface Identification in Anti-Lock Braking System[J]. JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2005, 14(1): 67-70.
Citation: QI Zhi-quan, LIU Zhao-du, ZHANG Jing-bo, MA Yue-feng. New Method of Road Surface Identification in Anti-Lock Braking System[J].JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2005, 14(1): 67-70.
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New Method of Road Surface Identification in Anti-Lock Braking System

  • School of Mechanical and Vehicular Engineering, Beijing Institute of Technology, Beijing100081, China

Funds:theNationalNaturalScienceFoundation(50122148)
  • Received Date:2003-09-19
    Abstract
  • Based on the vehicle-road dynamic model, the road characteristic parameter, which depends on different types of road surfaces, is introduced and a new method of road surface identification for automotive anti-lock braking system(ABS) is proposed. According to the characteristics of vehicle-road dynamic model, a simple math resolution method of the model's factors is established. Only using the information of wheel speed, the vehicle reference velocity and the wheel slip ratio are estimated real-timely. And based on the wheel dynamic model, the road characteristic parameter is determined to identify the road surface for the determination of thresholds of ABS regulative parameters. With this new method, the road surface identification can be accurately obtained and calculation time is short that it can meet the ABS real time control need, and it also improves the performance of ABS.
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