汽车工程 ›› 2024, Vol. 46 ›› Issue (11): 2100-2109.doi: 10.19562/j.chinasae.qcgc.2024.11.016
张金保1,杨永乐1,张志飞1(),彭良峰2,林伟雄3,张佑源3,徐中明1
收稿日期:
2024-04-26
修回日期:
2024-05-29
出版日期:
2024-11-25
发布日期:
2024-11-22
通讯作者:
张志飞
E-mail:z.zhang@cqu.edu.cn
Jinbao Zhang1,Yongle Yang1,Zhifei Zhang1(),Liangfeng Peng2,Weixiong Lin3,Youyuan Zhang3,Zhongming Xu1
Received:
2024-04-26
Revised:
2024-05-29
Online:
2024-11-25
Published:
2024-11-22
Contact:
Zhifei Zhang
E-mail:z.zhang@cqu.edu.cn
摘要:
针对核密度估计载荷外推全局固定带宽的局限性,提出一种基于KANN-DBSCAN(K-average nearest neighbor density-based spatial clustering of applications with noise)改进带宽取值的核密度估计(kernel density estimation, KDE)载荷外推方法。通过KANN-DBSCAN聚类算法对载荷数据进行分组聚类,采用拇指法求得不同簇间的最优带宽,然后进行核密度估计,再采用蒙特卡洛模拟进行外推。以某电动汽车在用户道路的实测载荷数据为应用对象,对外推方法的合理性进行检验。从统计参数检验量、拟合度检验和伪损伤检验3个指标对外推效果进行评估。结果表明:相比固定带宽的核密度估计外推方法,基于KANN-DBSCSN核密度估计的外推方法获得的外推载荷在统计参数上与实测载荷更为接近,均值、标准差和最大值的误差分别仅为 1.9%、 4.3%和1.9%;幅值累计频次曲线拟合度
张金保,杨永乐,张志飞,彭良峰,林伟雄,张佑源,徐中明. 基于KANN-DBSCAN带宽优化的核密度估计载荷谱外推[J]. 汽车工程, 2024, 46(11): 2100-2109.
Jinbao Zhang,Yongle Yang,Zhifei Zhang,Liangfeng Peng,Weixiong Lin,Youyuan Zhang,Zhongming Xu. Extrapolation of Load Spectrum Based on KANN-DBSCAN Bandwidth Optimization Kernel Density Estimation[J]. Automotive Engineering, 2024, 46(11): 2100-2109.
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