发明授权
US06650988B2 Method and apparatus for judging road surface conditions, and program for setting threshold for judging road surface conditions
有权
用于判断路面状况的方法和装置，以及用于设定用于判断路面状况的阈值的程序
- 专利标题： Method and apparatus for judging road surface conditions, and program for setting threshold for judging road surface conditions
- 专利标题（中）： 用于判断路面状况的方法和装置，以及用于设定用于判断路面状况的阈值的程序
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申请号： US10270558申请日： 2002-10-16
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公开(公告)号： US06650988B2公开(公告)日： 2003-11-18
- 发明人: Hiroaki Kawasaki , Yukio Nakao
- 申请人： Hiroaki Kawasaki , Yukio Nakao
- 优先权： JP2001-318195 20011016
- 主分类号： B60T866
- IPC分类号： B60T866
摘要：
A method and an apparatus for judging road surface conditions are disclosed. The method includes the steps of: detecting rotational information of tires; storing the rotational information of the respective tires; calculating a vehicle velocity; calculating an acceleration/deceleration of the vehicle; calculating a slip ratio of left-sided front and rear wheels and right-sided front and rear wheels and a slip ratio of front and rear wheels, respectively; calculating an amount of fluctuation in differences in slip ratios between the right and left wheels; obtaining a linear regression coefficient and a correlation coefficient between the slip ratio of the front and rear wheels and the acceleration/deceleration of the vehicle; and setting a threshold for judging road surface conditions. The method and apparatus allow for road surface conditions to be judged accurately.