Vehicle control system and vehicle control method

Patent metadata

Field	Value
Publication number	US-9855968-B2
Application number	US-201415036894-A
Country	US
Kind code	B2
Filing date	Nov 14, 2014
Priority date	Nov 18, 2013
Publication date	Jan 2, 2018
Grant date	Jan 2, 2018

Abstract

A vehicle control system includes a controller configured to, when a collision of a host vehicle with another vehicle traveling in a direction that intersects with a front-rear direction of the host vehicle is predicted (Yes in S 20 ), when the collision with the other vehicle is unavoidable (No in S 70 ) and when the other vehicle comes into collision with the host vehicle in the intersecting direction, automatically turn a steered wheel of the host vehicle before the host vehicle collides with the other vehicle. The controller is configured to vary a direction of the steered wheel that is turned by the controller (S 100 or S 110 ) in response to whether there is a target, other than the other vehicle, around the host vehicle (Yes or No in S 90 ).

First claim

The invention claimed is:

1. A vehicle control system, comprising:
a controller configured to, when a collision of a host vehicle with another vehicle traveling in an intersecting direction that intersects with a front-rear direction of the host vehicle is predicted, when the collision with the other vehicle is unavoidable and when the other vehicle is about to come into collision with the host vehicle in the intersecting direction, automatically turn a steered wheel of the host vehicle before the host vehicle collides with the other vehicle, the controller being configured to vary a direction of the steered wheel that is turned by the controller in response to whether there is a target, other than the other vehicle, around the host vehicle;
wherein the controller is configured to, when there is no target, other than the other vehicle, around the host vehicle, turn the steered wheel toward the other vehicle, and
wherein the controller is configured to, when there is the target, other than the other vehicle, on a side across from the other vehicle side in a width direction of the host vehicle, turn the steered wheel toward the target side.

2. The vehicle control system according to claim 1 , wherein
the controller is configured to, when the collision of the host vehicle with the other vehicle is predicted, execute assisting control for assisting in avoiding the collision with the other vehicle by controlling the host vehicle through at least one of deceleration control, brake control, and alarm control, and
the controller is configured to, when the collision with the other vehicle is unavoidable even by executing the assisting control, automatically turn the steered wheel.

3. The vehicle control system according to claim 2 , wherein
the controller is configured to further execute backward travel control for automatically causing the host vehicle to travel backward, and
the controller is configured to, when a collision with the other vehicle is predicted at a stop position of the host vehicle after execution of any one of the deceleration control, the brake control and the alarm control, and when there is no obstacle to a rear of the host vehicle, assist in avoiding the collision with the other vehicle through the backward travel control.

4. The vehicle control system according to claim 3 , wherein
the controller is configured to, when there is an obstacle to the rear of the host vehicle, prohibit the backward travel control and execute protection control for protecting an occupant of the host vehicle.

5. The vehicle control system according to claim 1 , wherein
the controller is configured to control a moving direction of the host vehicle after the collision with the other vehicle by turning the steered wheel in a direction different from the direction of the steered wheel before turning of the steered wheel by the controller is started.

6. The vehicle control system according to claim 1 , wherein
the controller is configured to, when there is the target, other than the other vehicle, on the side across from the other vehicle side in the width direction of the host vehicle, release a brake device in addition to automatic turning of the steered wheel.

7. The vehicle control system according to claim 1 , wherein
the controller is configured to, when there is the target, other than the other vehicle, on the side across from the other vehicle side in the width direction of the host vehicle, further execute forward travel control for automatically causing the host vehicle to travel forward.

8. The vehicle control system according to claim 1 , wherein
the controller is configured to, when there is no target, other than the other vehicle, around the host vehicle, release a brake device in addition to automatic turning of the steered wheel.

9. A control method for a vehicle, the vehicle including a controller, the control method comprising:
when a collision of a host vehicle with another vehicle traveling in an intersecting direction that intersects with a front-rear direction of the host vehicle is predicted, when the collision with the other vehicle is unavoidable and when the other vehicle is about to come into collision with the host vehicle in the intersecting direction, automatically turning, by the controller, a steered wheel of the host vehicle before the host vehicle collides with the other vehicle; and
varying, by the controller, a direction of the steered wheel that is turned by the controller in response to whether there is a target, other than the other vehicle, around the host vehicle,
wherein the controller, when there is no target, other than the other vehicle, around the host vehicle, turns the steered wheel toward the other vehicle, and
wherein the controller, when there is the target, other than the other vehicle, on a side across from the other vehicle side in a width direction of the host vehicle, turns the steered wheel toward the target side.

Assignees

• Toyota Motor Co Ltd

Inventors

• Kawamata Shinya

Classifications

• B60T2201/024

  Collision mitigation systems · CPC title

• B60W2050/143

  Alarm means · CPC title

• B60W30/085 Primary

  Taking automatic action to adjust vehicle attitude in preparation for collision, e.g. braking for nose dropping · CPC title

• B62D15/025 Primary

  Active steering aids, e.g. helping the driver by actively influencing the steering system after environment evaluation (B62D1/28 takes precedence) · CPC title

• B60W10/20

  including control of steering systems · CPC title