公开(公告)号：US20230159093A1

公开(公告)日：2023-05-25

申请号：US18152491

申请日：2023-01-10

Applicant: Hitachi Astemo, Ltd.

Inventor： Kyoichi TAGAMI

IPC: B62D5/04 ,  B60W40/076 ,  B62D5/22 ,  B62D6/04

CPC classification number: B62D5/0463 ,  B60W40/076 ,  B62D5/22 ,  B62D6/04

Abstract: An electric power steering device 100 includes: an electric motor 110 configured to apply a driving force to steer a wheel in response to operation of a steering wheel; and a control device 10 configured to perform control of drive of the electric motor by estimating a degree of sloping in a transverse direction of a roadway on which a vehicle travels, determining, based on the estimated degree of sloping, a correction current for correcting a target current required for the electric motor to generate the driving force, and correcting the target current with the correction current.

公开(公告)号：US20220297672A1

公开(公告)日：2022-09-22

申请号：US17837296

申请日：2022-06-10

Applicant: Hitachi Astemo, Ltd.

Inventor： Ken ISSHIKI ,  Kyoichi TAGAMI

IPC: B60W30/045 ,  B60W10/20 ,  B60W10/22

Abstract: A steering control device which calculates a steering control amount for controlling steering of a vehicle includes a basic control amount calculation unit which calculate a basic control amount, and a steering control amount arithmetic unit which calculates the steering control amount with reference to self-aligning torque caused by a motion state amount of the vehicle and the basic control amount.

公开(公告)号：US20220324281A1

公开(公告)日：2022-10-13

申请号：US17838409

申请日：2022-06-13

Applicant: Hitachi Astemo, Ltd.

Inventor： Ken ISSHIKI ,  Kyoichi TAGAMI ,  Noal Van NGUYEN ,  Eishi ISHIMARU

IPC: B60G17/016 ,  B60G17/08

Abstract: The present invention achieves suspension control that allows for synchronization of the roll and the pitch of a vehicle. This suspension control device that controls the damping force of a suspension comprises: a target pitch angle calculation unit that calculates a target pitch angle with reference to a roll angle signal; and a target control amount computation unit that calculates the roll posture target control amount referred to for controlling the damping force of the suspension by referring to a steering torque signal and the target pitch angle.

公开(公告)号：US20220314729A1

公开(公告)日：2022-10-06

申请号：US17838494

申请日：2022-06-13

Applicant: Hitachi Astemo, Ltd.

Inventor： Ken ISSHIKI ,  Noal Van NGUYEN ,  Kyoichi TAGAMI

IPC: B60G17/08 ,  B60G17/016 ,  B60G17/019

Abstract: A technology can be realized which increases the sense of unity with a vehicle that is felt by a driver. A suspension control device, which controls the damping force of the suspension of a vehicle, comprises a target control amount calculation unit which sets a target control amount, that is referenced when controlling the damping force of the suspension, such that the period of the phase of the roll angle and the period of the phase of the pitch angle of the vehicle approach a synchronized state, such that the magnitude of the expansion-side damping force is greater than the magnitude of the contraction-side damping force on the front-wheel-side of the vehicle, and such that the contraction-side damping force is greater than or equal to the expansion-side damping force on the rear-wheel-side of the vehicle.