公开(公告)号：US20220355856A1

公开(公告)日：2022-11-10

申请号：US17621765

申请日：2021-02-05

申请人： NSK LTD.

发明人： Keitarou TANAKA

IPC分类号： B62D6/00 ,  B62D15/02

摘要： A vehicle steering device includes a target steering torque generation unit configured to generate target steering torque for a reaction force motor, and a torque correction value calculation unit configured to generate a torque signal Tref_p in accordance with road surface reaction force acting on a steering wheel of a vehicle. The torque correction value calculation unit generates the torque signal Tref_p by separating estimated road surface reaction force into a low-frequency component and a high-frequency component, providing level restriction on each of the low-frequency component and the high-frequency component, and adding torque values converted from the low-frequency component and the high-frequency component after the level restriction. The target steering torque generation unit generates the target steering torque by adding the torque signal Tref_p and a torque signal Tref_a generated based on a predetermined basic map in accordance with at least a vehicle speed and a steering angle of the vehicle.