公开(公告)号：US20230070909A1

公开(公告)日：2023-03-09

申请号：US17799995

申请日：2021-01-29

Applicant: Hitachi Astemo, Ltd.

Inventor： Koki TAKIMOTO ,  Daisuke GOTO ,  Takuya USUI

IPC: B60T8/172 ,  B60T13/74 ,  F16D65/18 ,  B60T1/06 ,  F16D55/226

Abstract: Left front electric brake mechanisms apply a braking force to a left front wheel by actuating an “electric motor of a first left front electric brake mechanism” and an “electric motor of a second left front electric brake mechanism” controllable independently of each other. A first ECU (a control portion) acquires a target thrust force instruction value to be generated on the left front electric brake mechanisms based on a target braking force to be applied to the left front wheel. The first ECU (the control portion) outputs a first control instruction for actuating the electric motor of the first left front electric brake mechanism and a second control instruction for actuating the electric motor of the first left front electric brake mechanism according to a change amount of the target thrust force instruction value.

公开(公告)号：US20240262331A1

公开(公告)日：2024-08-08

申请号：US18567988

申请日：2022-06-02

Applicant: Hitachi Astemo, Ltd.

Inventor： Koki TAKIMOTO ,  Daisuke GOTO ,  Takuya USUI

IPC: B60T13/74 ,  F16D65/18 ,  F16D121/24

CPC classification number: B60T13/74 ,  F16D65/18 ,  F16D2121/24

Abstract: A motor control device includes a first control unit and/or a second control unit serving as a control unit. The control unit outputs, to a first motor drive unit, a first current command for energizing a first winding set so that first torque, which is torque greater than torque generated in a brake motor by a torque command for generating requested torque requested of the brake motor, and which is in the same direction as a direction of the requested torque, is generated. The control unit also outputs, to a second motor drive unit, a second current command for energizing a second winding set so that second torque, which is torque based on a difference between the requested torque and the first torque, and which is in a direction reverse to the direction of the first torque, is generated.

公开(公告)号：US20220055582A1

公开(公告)日：2022-02-24

申请号：US17298809

申请日：2019-11-25

Applicant: Hitachi Astemo, Ltd.

Inventor： Koki TAKIMOTO ,  Shu KATO

IPC: B60T8/32 ,  B60T17/22 ,  G05G1/38 ,  G05G25/00 ,  B60T13/62 ,  B60T13/68 ,  G01L5/22 ,  G01D5/14

Abstract: A vehicle pedal stroke detection apparatus acquires a first value based on a physical amount regarding a magnetic flux of a magnet that is output from a stroke sensor. The first value is a physical amount regarding a magnitude of a magnetic flux density of the magnet with respect to a displacement of a push rod. Then, the vehicle pedal stroke detection apparatus compares the first value and a second value. The second value is a preset physical amount regarding the magnitude of the magnetic flux density of the magnet with respect to the displacement of the push rod.