摘要
为了提高用户可靠性目标载荷谱的真实性和有效性,提出一种基于典型工况采集和速度分布构建载荷谱的方法。应用最小二乘法估计出租汽车每天行驶里程正态分布参数,进而估算用户目标总里程。基于总样本和用户典型载荷的速度分布相等建立用户典型载荷构建模型。利用GPS数据统计分析总样本和实测载荷的速度分布,计算得出用户典型载荷构建的模型参数,实现用户典型载荷的重构。根据构建的用户典型载荷数据与目标总里程,外推得到用户目标载荷谱。结果表明,基于速度分布构建的目标载荷谱更加真实有效地反映了用户的实际使用工况。
In order to improve the authenticity and effectiveness of customer reliability target load spectrum,a method for constructing load spectrum based on typical working condition data acquisition and velocity distribution is presented. The normal distribution parameters of taxi daily mileage are estimated with least square method,and customer target total mileage is calculated. Based on the same velocity distributions of the total sample and the customers＇ typical loads,the model of customers＇ typical loads is established. Using the GPS data,the velocity distributions of the total sample and the measured load are statically analyzed,and the model parameters of customers＇ typical loads are calculated to realize the reconstruction of the typical loads.According to the reconstructed customer typical load data and total target mileage,the customer target load spectrum is obtained by extrapolation. The result shows that the customer target load spectrum constructed with velocity distribution is more accurately and effectively for reflecting the customer actual use conditions.
出处
《公路交通科技》
CAS
CSCD
北大核心
2016年第2期130-134,共5页
Journal of Highway and Transportation Research and Development
基金
交通运输部应用基础研究项目(2013319223180)
交通运输部标准计量质量研究项目(2013419223190)
中央及公益性科研所基本业务费专项项目(2014-9042)
关键词
交通工程
载荷谱构建方法
试验研究
出租汽车
可靠性
traffic engineering
construction method of load spectrum
experimental study
taxi
reliability
