PROBLEM TO BE SOLVED: To provide a rear-wheel steering apparatus capable of reducing discomfort while a driver operates a vehicle.SOLUTION: A rear-wheel steering apparatus 1 includes: a road surface friction coefficient estimation part 91 for estimating a friction coefficient of a road surface a vehicle 100 travels on; a steering angle sensor 4 for detecting steering angles of front wheels F1, F2 of the vehicle 100; a condition determination part 93 for determining whether a condition is met, the condition where a friction coefficient of the road surface is less than a first threshold, with an absolute value of steering angles of the front wheels F1, F2 less than a second threshold, during execution of rear counter control; and a control amount calculation part 94 for calculating a control amount for the rear counter control in a case where the vehicle 100 is in an over-steering state, and reducing a control amount to be calculated from the control amount that has been calculated immediately before in a case where the condition determination part 93 determines that the condition has been met.SELECTED DRAWING: Figure 1

    【課題】ドライバによる車両操作時の違和感を低減することができる後輪操舵装置を提供すること。【解決手段】後輪操舵装置1は、車両100が走行している路面の摩擦係数を推定する路面摩擦係数推定部91と、車両100における前輪F1,F2の舵角を検出する操舵角センサ4と、リアカウンタ制御の実行中に、路面の摩擦係数が第1閾値未満で、かつ前輪F1,F2の舵角の絶対値が第2閾値未満である条件を満たしたか否かを判定する条件判定部93と、車両100がオーバーステアの状態である場合にリアカウンタ制御における制御量を算出するとともに、条件判定部93にて条件を満たしたと判定された場合に、算出する制御量を直前に算出した制御量に対して減少させる制御量算出部94とを備える。【選択図】図1


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    Title :

    REAR-WHEEL STEERING APPARATUS


    Additional title:

    後輪操舵装置


    Contributors:

    Publication date :

    2016-05-16


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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