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    • 3. 发明专利
    • Anti-lock control apparatus for a vehicle
    • JP4485457B2
    • 2010-06-23
    • JP2005338729
    • 2005-11-24
    • 本田技研工業株式会社
    • 雄貴 伊藤直人 大久保修 山本裕巳 稲垣
    • B60T8/1763
    • PROBLEM TO BE SOLVED: To improve accuracy of anti-lock control by properly estimating a road surface frictional coefficient used for anti-lock control. SOLUTION: A road surface frictional coefficient estimating part M5a estimates a road surface frictional coefficient based on a braking force calculated by a braking force calculating part M4, a wheel acceleration calculated by a wheel acceleration calculating part M2 and a wheel contact load calculated by a contact load calculating part M3. Moreover, a road surface frictional coefficient updating part M5 updates the road surface frictional coefficient when a slip rate calculated by a slip rate calculating part M1c based on a wheel speed and vehicle body speed is on an increase and is smaller than a predetermined value. Anti-lock control is performed with high accuracy based on a reference fluid pressure calculated by a reference fluid pressure calculating part M6 so as to stabilize the slip rate in a narrow range. An update timing of the road surface frictional coefficient is determined based on the stable slip rate to appropriately grasp a peak of the road surface frictional coefficient, thus attaining highly accurate anti-lock control. COPYRIGHT: (C)2007,JPO&INPIT