PROBLEM TO BE SOLVED: To provide a steering assist device capable of providing an excellent steering characteristic.SOLUTION: A steering assist device assists a rotation of a steering system 29 transmitting a rotation of a bar handle 8 to a wheel. The steering assist device comprises: a motor 70 for outputting an assist force assisting the rotation of the steering system 29. The assist by the motor 70 is limited to be within a range including: a plus direction assist, which applies, to the steering system 29, a rotary force directed to a same direction as that of a steering torque of the bar handle 8; and a minus direction assist, which applies, to the steering system 29, a rotary force directed to an opposite direction to that of the steering torque. When the steering torque is a first threshold value or greater, an increase in a steering speed of the bar handle 8 will cause the assist direction to change from the plus direction to the minus direction.SELECTED DRAWING: Figure 8
【課題】良好な操舵特性が得られる操舵補助装置を提供する。【解決手段】操舵補助装置は、バーハンドル8の回転を車輪に伝達する操舵系29の回転をアシストする。操舵補助装置は、操舵系29の回転をアシストする補助力を出力するモータ70を備える。モータ70によるアシストは、バーハンドル8の操舵トルクと同じ方向の回転力を操舵系29に付与するプラス方向アシスト、及び、操舵トルクと反対方向の回転力を操舵系29に付与するマイナス方向アシストを含む範囲で制御される。操舵トルクが第1閾値以上のときにバーハンドル8の舵角速度が上がるとアシストの方向がプラス方向からマイナス方向へ転じる。【選択図】図8
STEERING ASSIST DEVICE, SADDLE-RIDING TYPE VEHICLE, AND STEERING ASSIST METHOD
操舵補助装置、鞍乗型車両及び操舵補助方法
24.11.2017
Patent
Elektronische Ressource
Japanisch
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