PROBLEM TO BE SOLVED: To provide a steering reaction force control unit capable of preventing a turning mechanism from colliding with a turning restriction mechanism without making a reaction force motor large-sized even when a turning speed of tires is high.SOLUTION: A steering reaction force control unit 12 in accordance with the present invention is mounted in a steer-by-wire type vehicle, and controls a reaction force motor, which applies a steering reaction force to a steering wheel, according to a steering angle θhdl of the steering wheel. The steering reaction force control unit includes turning position detection means that detects a turning position Xpos of tires, turning speed detection means 24 that detects a turning speed Xvel of the tires, and edge abutment reaction force control means 25 that, when the turning position reaches a predetermined position dependent on a maximum turning position Xlimit of the tires, adds an edge abutment reaction force Tedge to a steering reaction force Treac. Along with an increase in the turning speed, the edge abutment reaction force control means changes a criterion, based on which the edge abutment reaction force is added to the steering reaction force, in a direction receding from the maximum turning position.SELECTED DRAWING: Figure 2
【課題】 この発明は、反力モータを大型化させることなく、タイヤの転舵速度が速い場合においても、転舵機構が転舵規制機構へ勢いよく衝突することを防止可能な操舵反力制御装置の提供を目的とする。【解決手段】 本発明に係る操舵反力制御装置12は、ステアバイワイヤ式の車両に搭載され、ハンドルの操舵角θhdlに応じて、ハンドルに操舵反力を付与する反力モータを制御するものであり、タイヤの転舵位置Xposを検出する転舵位置検出手段と、タイヤの転舵速度Xvelを検出する転舵速度検出手段24と、転舵位置がタイヤの最大転舵位置Xlimitに応じた所定位置に到達したときに、端当て反力Tedgeを操舵反力Treacに追加する端当て反力制御手段25と、を備え、端当て反力制御手段は、転舵速度の増大に基づいて、端当て反力を操舵反力に追加する判定基準を最大転舵位置から離れる方向に変更するものである。【選択図】 図2
STEERING REACTION FORCE CONTROL UNIT
操舵反力制御装置
2016-09-08
Patent
Electronic Resource
Japanese
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
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