To provide a vehicular steering device capable of suppressing a vehicle from increasing in radius of turning against driver's will when one steering wheel falls into a failure.SOLUTION: When one of a left steering wheel 3L and a right steering wheel 3R falls into a failure and an absolute value of a steering angle of a normal steering wheel is varied to a larger value, a steering angle of the normal steering wheel at a change point where a radius of turning of a vehicle changes from a decrease tendency to an increase tendency is regarded as a turning limit steering angle. When one of the left steering wheel 3L and the right steering wheel 3R falls into a failure, a host ECU 20 computes a turning limit steering angle corresponding to a vehicle speed and a steering direction, and when the absolute value of the steering angle of the normal steering wheel is larger than the absolute value of the computed turning limit steering angle, the turning limit steering angle is set as a target steering angle for the normal steering wheel.SELECTED DRAWING: Figure 1

    【課題】一方の転舵輪が失陥した場合に、運転者の意図に反して車両の旋回半径が大きくなるのを抑制できる車両用操舵装置を提供する。【解決手段】左転舵輪3Lおよび右転舵輪3Rのうちの一方が失陥している場合において、正常転舵輪の転舵角をその絶対値が大きくなる方向に変化させたときに、車両の旋回半径が減少傾向から増加傾向に変化する変化点の正常転舵輪の転舵角を旋回限界転舵角ということにする。上位ECU20は、左転舵輪3Lおよび右転舵輪3Rのうちの一方が失陥している場合に、車速および操舵方向に応じた旋回限界転舵角を演算し、正常転舵輪の転舵角の絶対値が、演算された旋回限界転舵角の絶対値よりも大きいときには、当該旋回限界転舵角を正常転舵輪に対する目標転舵角として設定する。【選択図】図1


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    Title :

    VEHICULAR STEERING DEVICE


    Additional title:

    車両用操舵装置


    Contributors:
    EGAMI KEI (author) / OYA TOSHIAKI (author)

    Publication date :

    2018-12-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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