公开(公告)号：US20230294474A1

公开(公告)日：2023-09-21

申请号：US18017232

申请日：2021-07-21

Applicant: Hitachi Astemo, Ltd.

Inventor： Makoto MATSUURA ,  Ryusuke HIRAO

IPC: B60G17/018

CPC classification number: B60G17/018 ,  B60G2600/04 ,  B60G2600/1878 ,  B60G2400/0511 ,  B60G2400/0512 ,  B60G2400/102 ,  B60G2600/08 ,  B60Y2400/86

Abstract: A controller controls a suspension apparatus including a variable damper that adjusts a force between a vehicle body and a wheel of a vehicle. The controller includes a first instruction calculation portion and a control instruction output portion. The first instruction calculation portion outputs a first instruction value of a damping force, which corresponds to a first target amount, using a learning result acquired from machine learning in advance by inputting a plurality of different pieces of information. The control instruction output portion limits the first instruction value and outputs it as a control instruction in a case where the first instruction value works in a direction leading to a greater vehicle state amount than a predetermined amount due to control of the variable damper based on the first instruction value.

公开(公告)号：US20250135830A1

公开(公告)日：2025-05-01

申请号：US18730109

申请日：2023-01-19

Applicant: Hitachi Astemo, Ltd.

Inventor： Yoshifumi KAWASAKI ,  Makoto MATSUURA ,  Ryusuke HIRAO

IPC: B60G17/06 ,  B60G17/0165

Abstract: A controller as a vehicle control apparatus controls a force (a damping force) of a shock absorber. A preview sensor detects road surface displacement information in a traveling direction of a vehicle. A vehicle speed sensor outputs vehicle speed information of the vehicle. The controller records the road surface displacement information into a memory for each predetermined distance by which the vehicle moves based on the vehicle speed information and a sampling time. The controller determines wheel position road surface displacement information corresponding to a position of the wheel based on the road surface displacement information recorded in the memory. The controller outputs an actuator instruction value for causing the shock absorber to perform a predetermined operation according to the wheel position road surface displacement information.

公开(公告)号：US20240253412A1

公开(公告)日：2024-08-01

申请号：US18566211

申请日：2022-05-12

Applicant: Hitachi Astemo, Ltd.

Inventor： Akihito AKAI ,  Ryusuke HIRAO ,  Makoto MATSUURA

IPC: B60G17/0165 ,  B60G17/018

CPC classification number: B60G17/0165 ,  B60G17/018 ,  B60Y2400/86

Abstract: A suspension control device includes: a parameter storage unit that stores a parameter indicating a correspondence between behavior information indicating behavior of a vehicle and sensor data related to a suspension of the vehicle, the parameter determined in advance by machine learning; a vehicle behavior inference unit that receives the behavior information among communication data transmitted in the vehicle and infers the sensor data related to the suspension of the vehicle based on the behavior information and the parameter in the parameter storage unit; and a control value calculation unit that calculates a suspension control value for controlling the suspension based on the inferred sensor data.

公开(公告)号：US20230249510A1

公开(公告)日：2023-08-10

申请号：US18014887

申请日：2021-07-14

Applicant: Hitachi Astemo, Ltd.

Inventor： Yoshifumi KAWASAKI ,  Makoto MATSUURA ,  Ryusuke HIRAO

IPC: B60G17/016 ,  B60G17/0165 ,  B60G17/019

CPC classification number: B60G17/0164 ,  B60G17/0165 ,  B60G17/01908

Abstract: A controller as a control apparatus controls a shock absorber of a control target wheel (a rear wheel) located in back of a detection target portion (a front wheel) of an unsprung acceleration sensor based on a detection value detected by the unsprung acceleration sensor on the front wheel side provided on a vehicle. In this case, the controller identifies a movement distance (a delay distance) from the detection target portion (the front wheel) and controls the shock absorber of the control target wheel (the rear wheel) located in back thereof based on the detection value of the unsprung acceleration sensor and a vehicle speed for each control period.