Optimization of AEB trigger width based on pedestrian crossing scenario

doi:10.16265/j.cnki.issn1003-3033.2020.04.022

Abstract

Abstract: In order to study influence of trigger width on pedestrian crossing scenario results in AEB control strategy, road and vehicle models were built by using automatic driving simulation software PreScan. Then, AEB longitudinal control algorithm was designed in Matlab model’s control platform Simulink to simulate pedestrians crossing scenarios. And trigger width was continuously adjusted to observe whether collision was avoided. The results show that when car speed is 30-50 km/h, the system's trigger width is at 1.75 m, which can help avoid collision effectively. When speed is 50-80 km/h, it needs to increase along with the increase of pedestrian speed. The wider it is, the more information car receives, and the more possible AEB malfunction will be. Therefore, the maximum trigger width is set to be 3.5 m. When car speed reaches between 60-80 km/h, it is necessary to optimize alue and full braking advance time simultaneously so as to avoid collision.

Key words: pedestrian crossing scenario, automatic emergency braking (AEB), trigger width, vertical control strategy

CLC Number:

X910
U461

HE Xia, ZHANG Daowen, CHE Yaoyue, LIU Qi, DONG Xiaofei, DONG Honglei. Optimization of AEB trigger width based on pedestrian crossing scenario[J]. China Safety Science Journal, 2020, 30(4): 141-146.

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