公开(公告)号：US11541857B2

公开(公告)日：2023-01-03

申请号：US16767924

申请日：2018-11-29

Applicant: ADVICS CO., LTD.

Inventor： Masato Terasaka ,  Chisa Kitahara

IPC: B60T8/1764 ,  B60T8/1755 ,  B60T8/24 ,  B60T13/74

Abstract: In the case that the road surface is determined to have different friction coefficients on the left and right wheels, this braking control device performs antiskid control for adjusting the increase slope of front wheel braking torque on the side with the higher friction coefficient. A steering angle sensor detects the steering angle, and a yaw rate sensor detects the yaw rate. The device calculates a reference turning amount on the basis of the steering angle, calculates an actual turning amount on the basis of the yaw rate, and sets the increase slope on the basis of the deviation between the reference turning amount and the actual turning amount. Also, if this deviation becomes larger, a correction is made such that the set increase slope becomes smaller. Further, if the deviation becomes smaller, a correction is made such that the set increase slope becomes larger.

公开(公告)号：US11738728B2

公开(公告)日：2023-08-29

申请号：US17274244

申请日：2019-09-24

Applicant: ADVICS CO., LTD.

Inventor： Masato Terasaka ,  Chisa Kitahara

IPC: B60T8/1761 ,  B60T8/172 ,  B60T8/173

CPC classification number: B60T8/1761 ,  B60T8/172 ,  B60T8/173

Abstract: A step determination device includes an operation amount sensor that detects an operation amount of a braking operation member, and a controller that determines a step by using the wheel speed and the operation amount. In the step determination device, the controller calculates an actual variable amount by using the wheel speed, calculates an estimated variable amount corresponding to the actual variable amount by using the operation amount, and executes the determination of the step by using the actual variable amount and the estimated variable amount. For example, the controller determines the presence of the step when the deviation between the actual variable amount and the estimated variable amount is not less than a predetermined value, and determines the absence of the step when the deviation is less than the predetermined value.

公开(公告)号：US11511714B2

公开(公告)日：2022-11-29

申请号：US16756266

申请日：2018-10-25

Applicant: ADVICS CO., LTD.

Inventor： Masato Terasaka ,  Chisa Kitahara

IPC: H02P3/00 ,  B60T8/00 ,  B60T8/58 ,  B60Q1/00 ,  B60T8/1761 ,  B60T8/32 ,  B60T8/52 ,  B60T8/86

Abstract: This vehicle braking control device executes automatic braking control to adjust a braking torque on the basis of a vehicle target deceleration value corresponding to a distance between the vehicle and an object in front of the vehicle, and executes anti-skid control to suppress excessive wheel slip by adjusting the braking torque on the basis of a wheel speed. The braking control device calculates an actual deceleration value corresponding to the target deceleration value, and executes feedback control on the basis of the target deceleration value and the actual deceleration value such that the actual deceleration value approaches the target deceleration value. The configuration is such that a control gain of the feedback control is reduced when anti-skid control is executed. Further, the configuration may be such that execution of feedback control is prohibited when anti-skid control is executed.

公开(公告)号：US11485332B2

公开(公告)日：2022-11-01

申请号：US17277843

申请日：2019-10-25

Applicant: ADVICS CO., LTD.

Inventor： Masato Terasaka ,  Chisa Kitahara

IPC: B60T8/17 ,  B60T8/1755 ,  B60T8/1764

Abstract: In a braking control device, a controller is configured to determine an inside and an outside of a turn by using the yaw rate, to calculate a deflection index based on a standard turning amount corresponding to a steering angle and an actual turning amount corresponding to a yaw rate, to reduce the braking torque of the rear wheel on the outside of the vehicle turn based on the deflection index when an excessive deceleration slip of the rear wheel on the inside of the vehicle turn is inhibited during an execution of anti-skid control.

公开(公告)号：US11279331B2

公开(公告)日：2022-03-22

申请号：US16759156

申请日：2018-11-29

Applicant: ADVICS CO., LTD.

Inventor： Masato Terasaka ,  Chisa Kitahara

IPC: B60T8/17 ,  B60T8/1755 ,  B60T8/171 ,  B60T8/172

Abstract: A braking control device includes an actuator, a controller, a steering angle sensor, and a yaw rate sensor. The controller calculates a reference turning amount, an actual turning amount, an understeer index, sets to a non-adjustment region in which the increase slope is not decreased when the understeer index is smaller than or equal to a first threshold value, sets to an adjustment region in which the increase slope is decreased when the understeer index is greater than or equal to a second threshold value greater than the first threshold value, and sets to a transition region in which the increase slope is decreased when the understeer index is transitioned from the non-adjustment region and the increase slope is not decreased when the understeer index is transitioned from the adjustment region when the understeer index is greater than the first threshold value and smaller than the second threshold value.