公开(公告)号：US11939013B2

公开(公告)日：2024-03-26

申请号：US17425379

申请日：2019-08-19

Applicant: Hitachi Astemo, Ltd.

Inventor： Shinya Kasai ,  Kotaro Shiino ,  Junya Takahashi ,  Masaru Yamasaki

IPC: B62D6/00

CPC classification number: B62D6/002 ,  B62D6/008 ,  B60W2540/18

Abstract: An object of the present invention is to provide a steering control device capable of reducing a steering amount while securing operability of a driver according to a traveling condition. A steering control device 61 forming a steer-by-wire system, which has no physical connection between a steering shaft by a driver and an actual steered angle of a vehicle wheel, the steering control device including an actual steered angle calculation unit 74 that determines the actual steered angle based on a steering angle and a steering torque generated on the steering shaft. The actual steered angle calculation unit 74 controls the actual steered angle based on the steering torque in a region where the steering angle is equal to or smaller than a predetermined value, and controls the actual steered angle based on a parameter different from the steering torque when the steering angle is larger than the predetermined value or a changed steering torque gain from when the steering angle is smaller than the predetermined value.