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Lane departure prevention system

A lane departure and driving lane technology, applied in the system field of preventing vehicles from departing from the driving lane, can solve problems such as deceleration, impossibility of giving vehicle yaw moment, driver discomfort, etc.

Inactive Publication Date: 2006-07-05
NISSAN MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In such a system, since the vehicle is decelerated, usually by selectively applying braking force to the wheels to create a yaw moment, it may cause discomfort to the driver
[0004] On the other hand, when the vehicle tends to deviate from the traffic lane, by proper steering, it is possible to give the vehicle a yaw moment, however, depending on a certain state of the vehicle relative to the traffic lane (such as yaw angle, etc.), it is impossible to give the vehicle a yaw moment only by steering desired yaw moment

Method used

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Examples

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Embodiment Construction

[0020] While the appended claims are not limited to the illustrated embodiments, various aspects of the inventive system may be better understood from the description of various examples of the invention.

[0021] The illustrated embodiment describes an example installed on a rear wheel drive vehicle with a lane departure prevention system. The vehicle is equipped with an automatic transmission, a conventional differential, and a braking system for independently controlling the braking force applied to the left, right, front, and rear wheels.

[0022] In addition, the front and rear wheels of the vehicle can be steered simultaneously. Examples of such vehicles may include vehicles with a front active steering system and a rear wheel steering system, or vehicles with a so-called steer-by-wire system that enables Changes the angle of the steering wheel manually operated by the driver and the steering angle of the front steering wheels. This embodiment is applicable to all thes...

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Abstract

The present lane departure prevention system comprises a position detector means for detecting positional information of a vehicle with respect to a lane of travel, a determining unit for comparing the positional information with a first threshold value indicating a predetermined positional relation with respect to the lane of travel, and determining a departure of the vehicle from the lane of travel on the basis of the comparison result, and a yaw moment applying unit for applying a yaw moment to the vehicle and switching a first process of applying the yaw moment to the vehicle only by steering wheels and a second process of applying the yaw moment to the vehicle by steering the wheels and applying a braking power to the wheels, on the basis of a traveling condition of the vehicle, when the determining unit determines that the vehicle departs from the lane of travel.

Description

technical field [0001] The invention relates to a system for preventing a vehicle from departing from a roadway. Background technique [0002] In a lane departure prevention system for preventing a vehicle from departing from a traffic lane, braking force is selectively applied to wheels, thereby imparting a yaw moment to the vehicle. [0003] In such a system, since the vehicle is decelerated, usually by selectively applying braking force to the wheels to generate a yaw moment, it may cause discomfort to the driver. [0004] On the other hand, when the vehicle tends to deviate from the traffic lane, by proper steering, the vehicle can be given a yaw moment, however, depending on a certain state of the vehicle relative to the traffic lane (such as yaw angle, etc.), it is impossible to give the vehicle a yaw moment only by steering. desired yaw moment. Contents of the invention [0005] The lane departure prevention system of the present invention can prevent lane departu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W10/04B60W10/18B60W10/20B60W30/12B62D6/00B60W10/184
Inventor 武田裕也
Owner NISSAN MOTOR CO LTD
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