Traffic jam auxiliary control method and system

A technology for traffic congestion and auxiliary control, applied in the field of car driving assistance, can solve the problems of not considering the coupling relationship between the vertical and horizontal control of the vehicle, and unable to perform lateral control.

Active Publication Date: 2021-03-12
清华大学苏州汽车研究院(吴江) +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Its TJA function is just to superimpose adaptive cruise control ACC and lane keeping system LKA together, or just an expanded version of ACC, using ACC for speed control in the longitudinal direction, and LKA cont

Method used

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  • Traffic jam auxiliary control method and system
  • Traffic jam auxiliary control method and system
  • Traffic jam auxiliary control method and system

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Embodiment

[0078] The preferred embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0079] In one embodiment, a traffic jam assist control method, when the function of the traffic jam assist system is activated, the vehicle is controlled laterally and longitudinally;

[0080] In lateral control, when there is a lane line, the vehicle is controlled to drive in the center according to the lane line detected by the vehicle sensor, and when there is no lane line or the lane line is not clear, the control follows the vehicle in front to laterally deviate;

[0081] In the longitudinal control, the target vehicle speed is calculated according to the data of the preceding vehicle, combined with the road curvature information, the current steering wheel angle and the target steering wheel angle obtained by lateral control, the coupling speed limit control is performed on the target vehicle speed, and the target vehicle speed is cont...

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Abstract

The invention discloses a traffic jam auxiliary control method, and the method comprises the steps: carrying out lateral control and longitudinal control of a vehicle when the function of a traffic jam auxiliary system is activated; during transverse control, when a lane line exists, controlling a vehicle to run in the middle according to the lane line detected by a vehicle sensor, and when no lane line exists or the lane line is not clear, controlling the vehicle to transversely deviate along with a front vehicle; during longitudinal control, calculating the target vehicle speed of the vehicle according to front vehicle data, carrying out coupling speed limiting control on the target vehicle speed in combination with the road curvature information, the current steering wheel angle and thetarget steering wheel angle obtained through transverse control, controlling the target vehicle speed, and obtaining an expected vehicle acceleration. The vehicle is automatically controlled to carryout acceleration, deceleration, steering and other operations according to environmental perception, transverse and longitudinal coupling control is carried out on the vehicle, the safety and stability of the vehicle during high vehicle speed or curve control are guaranteed, the vehicle can still run along with a front vehicle when a lane line is not clear, and TJA function application scenes aregreatly increased.

Description

technical field [0001] The invention belongs to the technical field of automobile driving assistance, and in particular relates to a traffic jam auxiliary control method and system. Background technique [0002] With the rapid development of technology and the continuous maturity of technology, cars are becoming more and more intelligent. In traffic jam conditions, drivers need to frequently step on the accelerator, brake, and shift a series of operations, which can easily cause driving fatigue. In order to alleviate the driver's fatigue in such an environment, ensure driving safety, improve driving comfort and traffic operation efficiency, a traffic jam assist system, namely TJA (Traffic Jam Assist), has been developed. [0003] The patent with the notification number CN 106218636 A discloses a traffic jam assist system. The traffic jam assist system integrates the adaptive cruise system ACC and the full-speed lane keeping assist system to realize the longitudinal and late...

Claims

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Application Information

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IPC IPC(8): B60W30/02B60W30/12B60W30/165B60W40/105
CPCB60W30/02B60W30/12B60W30/165B60W40/105B60W2420/52
Inventor 韩海兰徐巍张晓莉戴一凡李敏
Owner 清华大学苏州汽车研究院(吴江)
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