Title:
路面状態判定方法および装置、ならびに路面状態の判定のしきい値設定プログラム
Document Type and Number:
Japanese Patent JP4153688
Kind Code:
B2
Abstract:
A method for judging road surface conditions, comprising 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.
Inventors:
Hiroaki Kawasaki
Yukio Nakao
Yukio Nakao
Application Number:
JP2001318195A
Publication Date:
September 24, 2008
Filing Date:
October 16, 2001
Export Citation:
Assignee:
Sumitomo Rubber Industries, Ltd.
International Classes:
B60T8/172; B60T8/1763; G01M17/02; B60W40/068; B60W40/12
Domestic Patent References:
| JP2001253334A |
Attorney, Agent or Firm:
Sota Asahina
Kei Saki
Kei Saki