Braking control system and method for vehicle

• US 9,180,881 B2
• Filed: 08/19/2014
• Issued: 11/10/2015
• Est. Priority Date: 11/26/2013
• Status: Active Grant

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group), Kia Motors Corporation (Kia Corp.)
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group), Kia Motors Corporation (Kia Corp.)
• Inventors: Lim, Hyung Jun, Kim, Jong Chul, Jang, Yon Jun
• Primary Examiner(s): Cheung, Mary
• Assistant Examiner(s): Sweeney, Brian P
• Application Number:
  US14/463,064
• Publication Number:
  US 20150149037A1
• Time in Patent Office: 448 Days
• Field of Search: 701/41
• US Class Current: 1/1
• CPC Class Codes: B60W 10/184 with wheel brakes
• CPC Class Codes: B60W 10/20 including control of steering systems
• CPC Class Codes: B60W 2420/403 Image sensing, e.g. optical camera
• CPC Class Codes: B60W 2420/408 Radar; Laser, e.g. lidar
• CPC Class Codes: B60W 2520/10 Longitudinal speed
• CPC Class Codes: B60W 2540/18 Steering angle
• CPC Class Codes: B60W 2710/182 Brake pressure, e.g. of fluid or between pad and disc
• CPC Class Codes: B60W 2710/207 Steering angle of wheels
• CPC Class Codes: B60W 30/09 Taking automatic action to avoid collision, e.g. braking and steering
• CPC Class Codes: B60W 30/18163 Lane change; Overtaking manoeuvres
• CPC Class Codes: B60W 40/105 Speed
• CPC Class Codes: G01S 13/867 Combination of radar systems with cameras
• CPC Class Codes: G01S 13/931 of land vehicles
• CPC Class Codes: G01S 2013/9315 Monitoring blind spots
• CPC Class Codes: G01S 2013/9318 Controlling the steering
• CPC Class Codes: G01S 2013/93185 Controlling the brakes
• CPC Class Codes: G01S 2013/932 using own vehicle data, e.g. ground speed, steering wheel direction
• CPC Class Codes: G01S 2013/93272 in the back of the vehicles

Abstract

A braking control system and a method for a vehicle are provided. The braking control method includes sensing, by a controller, a rear-side collision risk and a lane change and determining a lane change intention based on a steering change of a vehicle. In addition, the controller is configured to determine a braking control for the vehicle and a magnitude of the braking control for the vehicle based on the rear-side collision risk and the lane change, and the lane change intention.

Claims

1. A braking control system for a vehicle, the system comprising:

a radar configured to collect sensing information to sense a rear-side collision risk;

an imaging device configured to collect information to sense a lane change; and

a controller configured to;

determine a lane change intention based on a degree of a steering change of the vehicle during the rear-side collision risk and the lane change;

operate a steering device to adjust the steering change of the vehicle; and

adjust a magnitude of an auto-brake control and a magnitude of a braking control time for the vehicle by a braking device according to the lane change intention.

2. The braking control system for a vehicle of claim 1, further comprising:

a vehicle speed sensor configured to sense a vehicle speed,

wherein the controller is configured to automatically brake the vehicle when the speed of the vehicle is a predetermined speed or greater, and stop the automatic braking when the speed of the vehicle is less than the predetermined speed.

3. The braking control system for a vehicle of claim 1, wherein the controller is configured to reduce the braking control time for the vehicle to a predetermined magnitude or less based on the lane change intention.

4. The braking control system for a vehicle of claim 1, wherein the controller is configured to adjust a magnitude of an amount of side brake during the automatic braking based on the lane change intention.

5. A braking control method of a braking control system for a vehicle, the method comprising:

sensing, by a controller, a rear-side collision risk collected by a radar and a lane change sensed by an imaging device;

determining, by the controller, a lane change intention based on a steering change of the vehicle collected by a steering device;

determining, by the controller, a braking control for the vehicle;

operating, by the controller, the steering device to adjust the steering change of the vehicle; and

adjusting, by the controller, a magnitude of the braking control and magnitude of a braking control time for the vehicle based on the rear-side collision risk and the lane change, and the lane change intention.

6. The method of claim 5, further comprising:

sensing, by the controller, a vehicle speed,

automatically braking, by the controller, the vehicle when the speed of the vehicle is a predetermined speed or greater; and

stopping, by the controller, the automatic braking of the vehicle when the speed of the vehicle is less than the predetermined speed.

7. The method of claim 5, further comprising:

adjusting, by the controller, at least one of the magnitude of braking control time for the vehicle and a magnitude of amount of side brake during the automatic braking based on the lane change intention.

8. The method of claim 7, further comprising:

reducing, by the controller, the braking control time for the vehicle to a predetermined magnitude or less in response to determining a lane change intention.

9. The method of claim 5, further comprising:

stopping, by the controller, the automatic braking of the vehicle when a rear collision risk of the vehicle is reduced to a predetermined magnitude or less due to an acceleration;

stopping, by the controller, the automatic braking of the vehicle when the vehicle returns to an original lane based on an operation of the steering device; and

stopping, by the controller, the automatic braking of the vehicle when the operation of a steering device having a predetermined magnitude or greater is generated.