PROBLEM TO BE SOLVED: To suppress an attitude change of a vehicular body while securing a good comfort in riding a vehicle in such a condition where a steering operation is performed on a bad road.SOLUTION: Control includes: estimating a first vertical speed Z1di on the basis of vertical acceleration Zddi of a vehicular body at a position of each wheel (S20); estimating a second vertical speed Z2di caused by a drive operation on the basis of a drive operation amount of a driver (S30-S50); computing, as a target damping force Fti, a value produced by subtracting a product (Cco*Z2di) of a damping factor Cco of riding-comfort control and the second vertical speed from a sum of a product (Cco*Z1di) of the damping factor Cco of riding-comfort control and the first vertical speed and a product (Cat*Z2di) of a damping factor Cat of attitude control and the second vertical speed (S60); and controlling a damping factor Ci of a shock absorber on the basis of the target damping factor (S100-S120).SELECTED DRAWING: Figure 2
【課題】悪路にて操舵操作が行われるような状況において、車両の良好な乗り心地性を確保しつつ、車体の姿勢変化を抑制しようとする。【解決手段】各車輪の位置における車体の上下加速度Zddiに基づく第一の上下速度Z1diを推定し(S20)、運転者の運転操作量に基づいて運転操作に起因するば車体の第二の上下速度Z2diを推定し(S30〜50)、乗り心地制御の減衰係数Cco及び第一の上下速度の積Cco・Z1diと、姿勢制御の減衰係数Catと第二の上下速度との積(Cat・Z2di)と、の和から乗り心地制御の減衰係数Ccoと第二の上下速度との積(Cco・Z2di)を減算した値を目標減衰力Ftiとして演算し(S60)、目標減衰力に基づいてショックアブソーバの減衰係数Ciを制御する(S100〜120)。【選択図】図2
VEHICULAR DAMPING FORCE CONTROL APPARATUS
車両用減衰力制御装置
2017-11-24
Patent
Electronic Resource
Japanese
IPC: | B60G VEHICLE SUSPENSION ARRANGEMENTS , Radaufhängungen und Federungen für Fahrzeuge |