Effect of the parameter disturbance on a vehicle brake control and protection method proposed earlier

doi:10.3969/j.issn.1674-8484.2024.04.003

Abstract

Abstract:

Investigated the effectiveness of vehicle brake control protection methods proposed earlier by the author under parametric perturbations. MADYMO virtual simulation software was used to simulate 4 types of typical locomotive, and 3 parameters for analyzing the influence of disturbance on the braking control and protection method; The 3 parameters including the first contact time between human head and vehicle body, the braking system coordination time, and the road adhesion factor. The results show that the first contact time between the human head and the car body is 80~100 ms, which has the most significant impact on the reduction of weighted injury cost (WIC), but the parameter sensitivity ranking is different in different vehicle types. When the disturbance of road adhesion factor is 0.45~0.80, the damage of human-vehicle collision does not increase, but the decrease of WIC caused by ground is greater than zero, which can effectively reduce the damage of human-ground collision. When the disturbance interval of the coordination time parameter of the braking system is 80~350 ms, the braking control and protection method is still effective.

Key words: pedestrian-vehicle collisions, pedestrian ground contact injury, vehicle brake control, parameter perturbation, coefficient of road adhesion, coordination time of the braking system

CLC Number:

U461.91

ZOU Tiefang, JIANG Die, ZHOU Jing, YUAN Xiangting. Effect of the parameter disturbance on a vehicle brake control and protection method proposed earlier[J]. Journal of Automotive Safety and Energy, 2024, 15(4): 477-483.

Figures/Tables 13

References 22

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编号	t₁ / ms	μ	t_x / ms
1	-80	0.45	80
2	-80	0.57	170
3	-80	0.69	260
4	-80	0.81	350
5	-20	0.45	170
6	-20	0.57	80
7	-20	0.69	350
8	-20	0.81	260
9	40	0.45	260
10	40	0.57	350
11	40	0.69	80
12	40	0.81	170
13	100	0.45	350
14	100	0.57	260
15	100	0.69	170
16	100	0.81	80

编号	t₁ / ms	μ	t_x / ms
1	-80	0.45	80
2	-80	0.57	170
3	-80	0.69	260
4	-80	0.81	350
5	-20	0.45	170
6	-20	0.57	80
7	-20	0.69	350
8	-20	0.81	260
9	40	0.45	260
10	40	0.57	350
11	40	0.69	80
12	40	0.81	170
13	100	0.45	350
14	100	0.57	260
15	100	0.69	170
16	100	0.81	80

试验编号	ΔWIC				WIC降幅 / %				总WIC 降幅 / %
试验编号	大轿车	大型SUV	小轿车	小型SUV	大轿车	大型SUV	小轿车	小型SUV	总WIC 降幅 / %
1	-1 887	-640	41 255	16 182	-18.92	-5.68	84.11	66.27	57.98
2	3 884	18 437	26 030	-7 400	38.49	88.72	71.35	-64.74	51.98
3	1 197	6 638	32 794	2 510	17.20	43.67	91.60	20.02	61.19
4	6 238	9 856	13 876	5 677	54.01	64.80	87.44	59.83	68.40
5	4 401	2 300	45 257	18 423	44.13	20.43	92.27	75.44	74.32
6	1 839	18 080	33 162	8 385	18.23	87.01	90.90	73.36	78.02
7	3 769	9 864	26 621	-7 170	54.16	64.89	74.36	-57.18	46.93
8	8 742	5 495	9 365	837	75.69	36.13	59.01	8.82	46.89
9	4 988	520	45 704	8 460	50.02	4.62	93.18	34.64	63.01
10	-1 060	13 539	27 786	-2 360	-10.51	65.15	76.17	-20.65	48.12
11	915	12 190	31 805	7 136	13.15	80.20	88.84	56.91	73.83
12	6 970	10 752	11 940	101	60.35	70.69	75.24	1.06	57.11
13	2 655	6 325	46 287	3 680	26.62	56.17	94.37	15.07	62.24
14	-21 670	12 512	26 010	-1 420	-214.77	60.21	71.30	-12.42	19.59
15	-5 751	9 146	25 560	-12 750	-82.64	60.17	71.40	-101.67	22.99
16	6 552	3 850	12 278	512	56.73	25.31	77.37	5.40	44.50

试验编号	ΔWIC				WIC降幅 / %				总WIC 降幅 / %
试验编号	大轿车	大型SUV	小轿车	小型SUV	大轿车	大型SUV	小轿车	小型SUV	总WIC 降幅 / %
1	-1 887	-640	41 255	16 182	-18.92	-5.68	84.11	66.27	57.98
2	3 884	18 437	26 030	-7 400	38.49	88.72	71.35	-64.74	51.98
3	1 197	6 638	32 794	2 510	17.20	43.67	91.60	20.02	61.19
4	6 238	9 856	13 876	5 677	54.01	64.80	87.44	59.83	68.40
5	4 401	2 300	45 257	18 423	44.13	20.43	92.27	75.44	74.32
6	1 839	18 080	33 162	8 385	18.23	87.01	90.90	73.36	78.02
7	3 769	9 864	26 621	-7 170	54.16	64.89	74.36	-57.18	46.93
8	8 742	5 495	9 365	837	75.69	36.13	59.01	8.82	46.89
9	4 988	520	45 704	8 460	50.02	4.62	93.18	34.64	63.01
10	-1 060	13 539	27 786	-2 360	-10.51	65.15	76.17	-20.65	48.12
11	915	12 190	31 805	7 136	13.15	80.20	88.84	56.91	73.83
12	6 970	10 752	11 940	101	60.35	70.69	75.24	1.06	57.11
13	2 655	6 325	46 287	3 680	26.62	56.17	94.37	15.07	62.24
14	-21 670	12 512	26 010	-1 420	-214.77	60.21	71.30	-12.42	19.59
15	-5 751	9 146	25 560	-12 750	-82.64	60.17	71.40	-101.67	22.99
16	6 552	3 850	12 278	512	56.73	25.31	77.37	5.40	44.50

车型	极差 / %			影响最大的因子
车型	t₁	t_x	μ	影响最大的因子
大轿车	1.015 7	0.490 4	1.038 3	μ
大型SUV	0.072 9	0.266	0.563 9	μ
小轿车	0.050 2	0.077 4	0.162 2	μ
小型SUV	0.485 2	0.729 6	0.683 4	t_x
不分车型	0.242 1	0.159 1	0.149 6	t₁