汽车工程 ›› 2021, Vol. 43 ›› Issue (10): 1519-1527.doi: 10.19562/j.chinasae.qcgc.2021.10.014
孙文1,2,荣浚材1,王军年2(),徐佳1,吕斯文2,刘俐丽1
收稿日期:
2021-04-07
修回日期:
2021-05-20
出版日期:
2021-10-25
发布日期:
2021-10-25
通讯作者:
王军年
E-mail:wjn@jlu.edu.cn
基金资助:
Wen Sun1,2,Juncai Rong1,Junnian Wang2(),Jia Xu1,Lü Siwen2,Lili Liu1
Received:
2021-04-07
Revised:
2021-05-20
Online:
2021-10-25
Published:
2021-10-25
Contact:
Junnian Wang
E-mail:wjn@jlu.edu.cn
摘要:
针对车辆能耗评价用城市行驶循环缺少弯道工况的问题,制定出了基于短行程分析的城市弯道行驶工况构建方法。采取优化后的数据处理方法获得准确的弯道工况数据并进行弯道片段分割;使用主成分分析法对实验数据进行压缩降维;使用K-均值聚类算法将所有的弯道片段分类以获得代表性弯道工况,依据相似度将代表性弯道片段添加进传统典型城市综合工况,从而获得带有弯道信息的城市复合行驶工况。结果表明,具有弯道工况信息的复合行驶工况比传统车辆循环工况更能体现车辆在城市中的实际行驶特征。
孙文,荣浚材,王军年,徐佳,吕斯文,刘俐丽. 带弯道信息的城市复合行驶工况构建方法研究[J]. 汽车工程, 2021, 43(10): 1519-1527.
Wen Sun,Juncai Rong,Junnian Wang,Jia Xu,Lü Siwen,Lili Liu. Research on the Construction Method of Urban Compound Driving Cycle with Curved Road Information[J]. Automotive Engineering, 2021, 43(10): 1519-1527.
表1
各弯道工况特征参数"
工况 | (km·h-1) | (km·h-1) | … | ||||
---|---|---|---|---|---|---|---|
1 | 41.060 7 | 13.951 | 5.76 | … | 0.000 85 | 40.165 5 | 50.874 4 |
2 | 67.724 4 | 10.08 | 6.372 | … | 0.001 48 | 0.294 59 | 31.405 |
… | … | … | … | … | … | … | … |
32 | 91.932 | 21.42 | 7.015 | … | 0.000 14 | 3.714 57 | 317.615 |
33 | 75.846 | 13.36 | 6.588 | … | 0.000 1 | 1.099 98 | 397.784 |
… | … | … | … | … | … | … | … |
63 | 33.692 | 6.78 | 3.4 | … | 0.009 44 | 0.100 46 | 24.572 2 |
64 | 14.952 | 3.72 | 1.99 | … | 0.022 25 | 0.121 63 | 9.988 62 |
表2
各主成分特征值、贡献率和累计贡献率"
主成分 | 特征值 | 贡献率 | 累计贡献率 |
---|---|---|---|
1 | 6.136 758 | 0.278 944 | 0.278 944 |
2 | 4.500 363 | 0.204 562 | 0.483 505 |
3 | 3.580 212 | 0.162 737 | 0.646 242 |
4 | 2.394 267 | 0.108 831 | 0.755 073 |
5 | 1.339 000 | 0.060 864 | 0.815 937 |
6 | 1.083 981 | 0.049 272 | 0.865 209 |
… | … | … | … |
18 | 0.008 454 | 0.000 384 | 0.999 665 |
19 | 0.004 092 | 0.000 186 | 0.999 851 |
20 | 0.002 392 | 0.000 109 | 0.999 960 |
21 | 0.000 887 | 4.03×10-5 | 1 |
22 | 6.51×10-16 | 2.96×10-17 | 1 |
表4
距质心距离"
工况 | 第1类 | 第2类 | 第3类 |
---|---|---|---|
1 | 40.405 170 | 18.095 920 | 47.383 870 |
2 | 12.242 570 | 1.559 115 | 21.976 000 |
3 | 18.434 990 | 2.269 753 | 32.552 760 |
4 | 185.368 500 | 172.768 700 | 147.131 100 |
5 | 13.735 400 | 4.170 215 | 31.685 040 |
… | … | … | … |
60 | 4.913 065 | 21.394 240 | 17.791 980 |
61 | 5.043 046 | 34.638 070 | 31.702 240 |
62 | 1.263 347 | 13.020 350 | 18.785 690 |
63 | 1.217 729 | 9.276 866 | 21.404 620 |
64 | 4.179 408 | 14.995 220 | 34.383 630 |
表6
转弯代表性片段的特征参数"
类别 | 工况 片段 | (km·h-1) | … | ||||
---|---|---|---|---|---|---|---|
第1类 | 63 | 33.692 00 | 6.78 | … | 8 | 26.943 17 | 0.100 464 |
56 | 14.883 06 | 4.22 | … | 8 | 25.346 48 | 0.180 278 | |
57 | 14.377 74 | 3.39 | … | 8 | 24.722 42 | 0.087 123 | |
第2类 | 2 | 67.724 46 | 10.08 | … | 8 | 18.222 05 | 0.294 596 |
3 | 60.843 07 | 9.49 | … | 8 | 24.285 10 | 38.347 16 | |
7 | 84.477 90 | 15.42 | … | 6 | 24.977 44 | 0.833 62 | |
第3类 | 9 | 86.080 17 | 24.04 | … | 6 | 39.045 38 | 0.390 44 |
40 | 108.955 8 | 22.21 | … | 7 | 75.602 70 | 0.326 978 | |
32 | 91.932 01 | 21.42 | … | 6 | 54.046 76 | 3.714 57 |
表7
转弯代表性工况"
片段 | 速度 | 时间 | X | Y |
---|---|---|---|---|
63 | 6.780 | 822 | 2 923.052 | -2 428.640 |
4.890 | 823 | 2 926.716 | -2 425.300 | |
3.700 | 824 | 2 929.240 | -2 422.300 | |
… | … | … | … | |
4.350 | 828 | 2 926.146 | -2 409.630 | |
4.660 | 829 | 2 923.052 | -2 406.190 | |
4.430 | 830 | 2 919.307 | -2 402.850 | |
… | … | … | … | … |
30 | 21.420 | 1 040 | -4 060.270 | 1 450.612 |
20.484 | 1 041 | -4 065.820 | 1 450.612 | |
… | … | … | … | |
8.028 | 1 045 | -4 080.140 | 1 448.650 | |
6.984 | 1 046 | -4 081.470 | 1 448.053 |
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