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    • 6. 发明专利
    • Four-wheel steering control apparatus for a vehicle
    • JP5194430B2
    • 2013-05-08
    • JP2006295892
    • 2006-10-31
    • 株式会社アドヴィックス
    • 由行 安井相澤  博昭
    • B62D6/00B62D5/04B62D7/14B62D101/00B62D103/00B62D111/00B62D113/00B62D119/00B62D137/00
    • PROBLEM TO BE SOLVED: To provide a four-wheel steering controller capable of preventing a yaw moment for increasing stability produced by "front wheel steering angle correction control" from being canceled by "rear wheel steering control". SOLUTION: In a "front wheel steering control", a front wheel reference steering angle (equivalent to θrel1t) is determined according to a vehicle body speed Vx and the rotational angle θsw of a steering wheel, and a front wheel correction steering angle (equivalent to θrel2t) is determined according to the state of the vehicle (a difference ΔFX between the front and rear forces of left and right wheels and the deviation of the quantity of the state of the motion ΔVm_os, Δvm_us). The front wheel steering angle is controlled to the value obtained by correcting the front wheel reference steering angle by the amount of the front wheel correction steering angle. Namely, the "front wheel steering angle correction control" is performed. In the (same phase control) of the "rear wheel steering control", a rear wheel reference steering angle (δrt) is determined according to an actual front wheel steering angle δfa and the vehicle body speed Vx. The rear wheel steering angle is so controlled as to be generally aligned with the rear wheel reference steering angle. When the "front wheel steering angle correction control" is started, the rear wheel steering angle is held at a value at the start time or gradually moved toward "zero". COPYRIGHT: (C)2008,JPO&INPIT