Vehicular collision avoidance control device and vehicular collision avoidance control method

Patent metadata

Field	Value
Publication number	US-2018201239-A1
Application number	US-201615744369-A
Country	US
Kind code	A1
Filing date	Jul 12, 2016
Priority date	Jul 17, 2015
Publication date	Jul 19, 2018
Grant date	—

Abstract

A vehicular collision avoidance control device includes: a collision avoidance control unit that receives a vehicle deceleration rate that is an actual deceleration rate of a traveling vehicle and obtains a first desired deceleration rate for avoiding collision with an obstacle based on the received vehicle deceleration rate, a relative distance to the obstacle, and a target relative distance; and a brake control unit that obtains a desired deceleration rate for controlling a brake device by performing first control based on the received vehicle deceleration rate and the first desired deceleration rate and performing second control based on the first desired deceleration rate and stops the first control upon detection of a brake operation performed by a driver.

First claim

1 . A vehicular collision avoidance control device comprising:
a collision avoidance control unit configured to receive a vehicle deceleration rate that is an actual deceleration rate of a traveling vehicle, and obtain a first desired deceleration rate for avoiding collision with an obstacle based on the received vehicle deceleration rate, a relative distance to the obstacle, and a target relative distance; and a brake control unit configured to obtain a desired deceleration rate for controlling a brake device by performing first control based on the received vehicle deceleration rate and the first desired deceleration rate and performing second control based on the first desired deceleration rate and stop the first control upon detection of a brake operation performed by a driver.

2 . The vehicular collision avoidance control device according to claim 1 , wherein, when the brake operation is no longer detected, the brake control unit resumes the first control.

3 . The vehicular collision avoidance control device according to claim 1 , wherein, upon detection of the brake operation, the brake control unit compares a second desired deceleration rate that is a desired deceleration rate required by the brake operation with a third desired deceleration rate that is a deceleration rate generated by applying the vehicle deceleration rate as feedback to the first desired deceleration rate, and controls the brake device by using a greater one of the second desired deceleration rate and the third desired deceleration rate.

4 . A vehicular collision avoidance control method comprising:
receiving a vehicle deceleration rate that is an actual deceleration rate of a traveling vehicle and obtaining a first desired deceleration rate for avoiding collision with an obstacle based on the received vehicle deceleration rate, a relative distance to the obstacle, and a target relative distance; and obtaining a desired deceleration rate for controlling a brake device by performing first control based on the received vehicle deceleration rate and the first desired deceleration rate and performing second control based on the first desired deceleration rate and stopping the first control upon detection of a brake operation performed by a driver.

Assignees

• Advics Co Ltd
• Toyota Motor Co Ltd

Inventors

• Nakagawa Yusuke
• Ohmori Yosuke
• Ike Wataru

Classifications

• B60T7/12

  for automatic initiation; for initiation not subject to will of driver or passenger {(limiting speed of vehicles other than rail vehicles B60K31/00)} · CPC title

• B60T7/22 Primary

  initiated by contact of vehicle, e.g. bumper, with an external object, e.g. another vehicle {, or by means of contactless obstacle detectors mounted on the vehicle} · CPC title

• G08G1/16

  Anti-collision systems (road vehicle drive control systems for predicting or avoiding probable or impending collision otherwise than by control of a particular sub-unit B60W30/08) · CPC title

• B60T2220/04

  Pedal travel sensor, stroke sensor; Sensing brake request · CPC title

• B60T8/171

  Detecting parameters used in the regulation; Measuring values used in the regulation · CPC title