The present invention reduces the force required for steering while maintaining the straight-forward stability of a vehicle. A steering assist device that assists steering of a vehicle having a kingpin offset includes: a detection unit that detects a steering angle of a steering wheel; and an assist unit that changes the travel torque on the basis of an assist torque that increases as the steering angle increases when the steering angle is equal to or greater than a threshold value, and that is equal to or less than the minimum value of the assist torque when the steering angle is equal to or greater than the threshold value when the steering angle is less than the threshold value. When the steering angle is increasing, the assist unit reduces the travel torque of a first motor that drives a steering wheel on the inner side of a turn of the vehicle by the amount of the assist torque. The travel torque of a second motor that drives a steering wheel on the outside of a turn of the vehicle is increased by the amount of the assist torque.
本发明的转向操纵辅助装置在维持车辆的直进稳定性的同时减小转向操纵所需的力。转向操纵辅助装置对具有主销偏置距的车辆的转向操纵进行辅助,该转向操纵辅助装置具备:检测部,检测方向盘的转向角;以及辅助部,基于辅助转矩使行驶转矩变化,在所述转向角为阈值以上的情况下所述转向角越大则所述辅助转矩越大,而在所述转向角小于阈值的情况下所述辅助转矩是所述转向角为阈值以上的情况下的辅助转矩的最小值以下的值,在所述转向角正在增加的期间,所述辅助部使对所述车辆的转弯内侧的转向操纵轮进行驱动的第一电机的行驶转矩减少所述辅助转矩的量,并使对所述车辆的转弯外侧的转向操纵轮进行驱动的第二电机的行驶转矩增加所述辅助转矩的量。
Steering assistance device, steering assistance method, and vehicle
转向操纵辅助装置、转向操纵辅助方法及车辆
2024-06-25
Patent
Electronic Resource
Chinese
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion |
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