An automatic emergency braking control method

A technology of automatic emergency braking and control method, which is applied in the field of traffic safety, can solve the problem that it is difficult to take into account the warning time and safety distance at the same time, and achieve the effect of good warning and braking, good safety and improved effect

Active Publication Date: 2022-04-01
BEIJING JIAOTONG UNIV
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Problems solved by technology

[0004] However, the current automatic braking control technology is difficult to take into account the warning time and safety distance at the same time.

Method used

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  • An automatic emergency braking control method
  • An automatic emergency braking control method
  • An automatic emergency braking control method

Examples

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Embodiment

[0060] AEB Control Strategy Framework

[0061] This application proposes an AEB control method that can adapt the road surface adhesion coefficient, such as figure 1 shown. The role of the AEB control algorithm is mainly to judge the danger after receiving the movement information of the preceding vehicle and the own vehicle, and to give early warning and braking instructions; the role of the hierarchical control system and the braking force distribution strategy is mainly to control the actuator to achieve braking. and ensure the expected braking effect. In this application, the safety distance algorithm considering road surface adhesion coefficient and the fusion algorithm of TTC belong to the part of AEB control algorithm.

[0062] This application defines car B as the rear car, and car A as the front car, wherein car B is equipped with the control method provided in this paper, and adopts automatic emergency braking when it is judged that it is in danger with car A.

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Abstract

The present application belongs to the technical field of traffic safety, and in particular relates to an automatic emergency braking control method. However, the current automatic braking control technology is difficult to take into account both the warning time and the safety distance. The present application provides an automatic emergency braking control method, the method includes, formulating an automatic emergency braking control strategy, and the automatic emergency braking control strategy includes an automatic emergency braking control algorithm, a hierarchical control system and a braking force distribution Sub-strategy: Judging the collision risk based on the movement information of the target ahead and the self-vehicle movement information, and giving early warning and braking operations; the collision time algorithm is used in the early warning period, and the safety distance algorithm is used in the braking period; the control signals are transmitted sequentially To the first-level controller and the second-level controller, the control effect and expectations are kept as consistent as possible; the braking force is generated through the braking force distribution sub-strategy, so as to realize automatic braking. Avoid excessive braking while ensuring safety.

Description

technical field [0001] The present application belongs to the technical field of traffic safety, and in particular relates to an automatic emergency braking control method. Background technique [0002] Automatic emergency braking (AEB, Autonomous Emergency Braking) is an active safety technology that avoids or mitigates collisions through automatic emergency braking, and is a function of the Advanced Driving Assistant System (ADAS, Advanced Driving Assistant System). The AEB system obtains the movement information of the target in front through forward sensing sensors such as radar and camera, and combines the movement state of the vehicle to estimate the collision risk. When the degree of danger is low, the system will give early warning to the driver, including sound, image, etc.; Effective operation, the system will force automatic emergency braking to avoid collision as much as possible. Statistics show that the overall reduction in rear-end collisions of vehicles equ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W30/095B60W30/09B60W50/00B60T7/22
CPCB60W30/0956B60W30/09B60W50/00B60T7/22B60W2050/0019B60W2710/18
Inventor 张欣辛佳庚张宝迪
Owner BEIJING JIAOTONG UNIV
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