IP Library › Granted Patent US 11,511,714
Granted Patent B2
US 11,511,714 · App. 16/756,266 · Granted Nov 29, 2022

Vehicle braking control device

Inventors: Masato Terasaka (Kariya, JP); Chisa Kitahara (Kariya, JP)
Assignee: ADVICS CO., LTD.
B60T8/1761B60T8/321B60T8/52B60T8/86
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Quick Facts
Patent No.
US 11,511,714
App. No.
16/756,266
Granted
Nov 29, 2022
Kind
B2
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.

Claims (10)

1. A vehicle braking control device that applies a braking torque to wheels of the vehicle, the braking control device comprising:

a controller that executes

an automatic braking control for executing a feedforward control and a feedback control to adjust the braking torque based on a target deceleration value of the vehicle corresponding to a distance between an object in front of the vehicle and the vehicle, and

an anti-skid control for adjusting the braking torque based on a speed of the wheels to suppress excessive slip of the wheels, wherein

the controller is configured to

calculate an actual deceleration value corresponding to the target deceleration value,

execute the feedforward control based on the target deceleration value and the feedback control based on the target deceleration value and the actual deceleration value to bring the actual deceleration value closer to the target deceleration value, and

prohibit the execution of the feedback control when the anti-skid control is executed.

2. The vehicle braking control device according to claim 1 , wherein

the controller is configured to determine either one of a decrease mode for decreasing the braking torque and an increasing mode for increasing the braking torque based on the speed in the anti-skid control, and to, in a state in which the feedback control has been prohibited, resume the execution of the feedback control at a time point in which the increasing mode has been continuously determined for all the wheels for a predetermined time.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 15, 2020
From: TERASAKA, MASATO; KITAHARA, CHISA
To: ADVICS CO., LTD.
Reel/Frame 052404/0127 →
Priority Claims (1)
JP JP2017-205769 · Oct 25, 2017 · national
Continuity (1)
Related Publication 20200317174A1 · Oct 8, 2020