公开(公告)号：US12145417B2

公开(公告)日：2024-11-19

申请号：US17838494

申请日：2022-06-13

Applicant: Hitachi Astemo, Ltd.

Inventor： Ken Isshiki ,  Noal Van Nguyen ,  Kyoichi Tagami

IPC: B60G17/015 ,  B60G17/016 ,  B60G17/019 ,  B60G17/08

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.

公开(公告)号：US12202468B2

公开(公告)日：2025-01-21

申请号：US17837296

申请日：2022-06-10

Applicant: Hitachi Astemo, Ltd.

Inventor： Ken Isshiki ,  Kyoichi Tagami

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

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：US11465460B2

公开(公告)日：2022-10-11

申请号：US16745058

申请日：2020-01-16

Applicant: HITACHI ASTEMO, LTD.

Inventor： Ken Isshiki ,  Eishi Ishimaru ,  Kyouichi Tagami ,  Katsutoshi Yokoi

IPC: B60G17/0165 ,  B60G17/016 ,  B60G17/018 ,  B60G17/08

Abstract: A road surface condition is determined appropriately. A road surface determining section (84) configured to determine a road surface state includes a threshold setting section (845) configured to set a threshold for determining the road surface state, so that a value of a desired control variable is multiplied by a coefficient determined in accordance with a result of the determination by the road surface determining section (84).

公开(公告)号：US11376916B2

公开(公告)日：2022-07-05

申请号：US16538366

申请日：2019-08-12

Applicant: HITACHI ASTEMO, LTD.

Inventor： Ken Isshiki ,  Eishi Ishimaru ,  Kyouichi Tagami ,  Katsutoshi Yokoi

IPC: B60G17/0165 ,  B60G17/016 ,  B60G17/018

Abstract: A damping force of a suspension is controlled appropriately in accordance with a road surface condition. An ECU (600) includes: a road surface determining section (84) configured to determine a road surface condition; and a rolling attitude control section (682) configured to calculate a steering-based desired control variable, which is a candidate for a control variable for controlling a damping force of a suspension, in accordance with a result of the determination by the road surface determining section (84).

公开(公告)号：US12151529B2

公开(公告)日：2024-11-26

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.