公开(公告)号：US20200231204A1

公开(公告)日：2020-07-23

申请号：US16844587

申请日：2020-04-09

Applicant: Showa Corporation

Inventor： Ken ISSHIKI ,  Eishi ISHIMARU ,  Kyouichi TAGAMI ,  Nobuyuki ENOMOTO

IPC: B62D5/04 ,  B62D6/00

Abstract: Assist torque or reaction force torque with little unnatural feeling to a driver is applied. An ECU includes: a control amount calculation section that calculates a control amount for controlling magnitude of the assist torque or the reaction force torque with reference to steering torque applied to a steering member; and a control amount correction section that corrects the control amount calculated by the control amount calculation section with reference to a lateral G of a vehicle body, a steering angle of the steering member, and a steering angle speed of the steering member.

公开(公告)号：US20210061041A1

公开(公告)日：2021-03-04

申请号：US17095219

申请日：2020-11-11

Applicant: SHOWA CORPORATION

Inventor： Kyouichi TAGAMI ,  Ken ISSHIKI ,  Nobuyuki ENOMOTO ,  Eishi ISHIMARU

IPC: B60G17/0195 ,  B62D5/04 ,  B62D6/04 ,  B60G17/06

Abstract: An embodiment of the present invention allows for application of an assist torque or reaction torque which causes a driver to feel less discomfort. An ECU (600) includes a rack shaft axial force estimating section (620) configured to estimate a rack shaft axial force with reference to a roll rate of a vehicle body.

公开(公告)号：US20200377149A1

公开(公告)日：2020-12-03

申请号：US16996430

申请日：2020-08-18

Applicant: SHOWA CORPORATION

Inventor： Kyouichi TAGAMI ,  Ken ISSHIKI ,  Nobuyuki ENOMOTO ,  Eishi ISHIMARU

IPC: B62D5/04 ,  B62D6/10

Abstract: A steering control device which applies an assist torque or a reaction torque to a steering member operated by a driver, includes: a torque loss estimation unit which estimates torque loss; and a correction amount calculation unit which calculates a correction amount according to a rack axial force estimation value calculated based on a roll rate when the torque loss estimation unit estimates the torque loss.