Brake model updating of automatic emergency braking system simulation test

doi:10.3969/j.issn.1674-8484.2022.03.011

Abstract

Abstract:

A closed-loop simulation test system was established including a scenario model, a vehicle model, a sensor model, and a control model based on a vehicle Automatic Emergency Braking (AEB) function to improve accuracy of AEB simulation tests with a series of digital simulations and field tests. A correct module including a pure delay link, an inertial delay link, and a gain link was added in the vehicle braking system model to reduce the errors between the simulations and the field test results. The results indicate that after amending the braking system of vehicle model, the average error of maximum decelerations is 0.34 m/s², the average error of mean decelerations is 0.16 m/s² and the average error of minimum vehicle gaps is 4 cm in the AEB simulation tests; The simulation test results are coinciding with that of the field tests. Therefore, the simulation test system is capable of validating the AEB system correctly and effectively.

Key words: vehicle safety, advanced emergency braking (AEB), simulation scenario, digital simulation tests

CLC Number:

U461.91

LIU Tao, CHI Ting, WANG Di, WU Zhenxin, ZHANG Zhenglong. Brake model updating of automatic emergency braking system simulation test[J]. Journal of Automotive Safety and Energy, 2022, 13(3): 502-508.

Figures/Tables 12

References 13

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车长	5.04 m
车宽	1.91 m
轴距	2.99 m
轮距	1.63 m
质量	2.30 t

车长	5.04 m
车宽	1.91 m
轴距	2.99 m
轮距	1.63 m
质量	2.30 t

试验工况	v km·h^-1	TTC / s		-a_max / (m·s^-2)		-a_avg / (m·s^-2)		d / m
试验工况	v km·h^-1	仿真	实车	仿真	实车	仿真	实车	仿真	实车
工况1	10	0.40	0.34	8.21	10.23	7.13	9.02	0.58	0.22
工况2	20	0.48	0.44	8.22	11.04	7.16	9.68	0.56	0.24
工况3	25	0.59	0.51	8.22	10.09	7.11	8.91	0.71	0.17

试验工况	v km·h^-1	TTC / s		-a_max / (m·s^-2)		-a_avg / (m·s^-2)		d / m
试验工况	v km·h^-1	仿真	实车	仿真	实车	仿真	实车	仿真	实车
工况1	10	0.40	0.34	8.21	10.23	7.13	9.02	0.58	0.22
工况2	20	0.48	0.44	8.22	11.04	7.16	9.68	0.56	0.24
工况3	25	0.59	0.51	8.22	10.09	7.11	8.91	0.71	0.17

试验工况	v km·h^-1	TTC / s		-a_max / (m·s^-2)		-a_avg / (m·s^-2)		d / m
试验工况	v km·h^-1	仿真	实车	仿真	实车	仿真	实车	仿真	实车
工况1	10	0.39	0.34	10.13	10.23	9.11	9.02	0.25	0.22
工况2	20	0.50	0.44	10.35	11.04	9.51	9.68	0.21	0.24
工况3	25	0.61	0.51	10.31	10.09	8.69	8.91	0.12	0.17