城市道路轻型汽车行驶工况的构建与评估

为了提升政府公信力,构建符合城市道路汽车行驶工况已是迫在眉睫.基于一辆汽车耗时20天道路实际行驶数据,首先提出约束条件下单目标数学0-1规划模型对数据进行预处理,根据时间连续性得到运动学片段数量;再者,应用随机组合方法对片段进行优化组合构建符合时间长度的待选工况,从中选择与总体数据平均误差最小为4.15％的作为代表工况...

Construction and Evaluation of Light Vehicle Driving Conditions on Urban Roads

In order to enhance the credibility of the government,it is imminent to build a driving condition that meets the requirements of urban road vehicles.Based on the actual driving data of a car that takes 20 days,this paper first proposes a single-object mathematical 0-1 planning model under constraint conditions to preprocess the data and obtain the number of kinematic fragments based on time continuity.Furthermore,a random combination method is applied.Optimize and combine the segments to construct candidate conditions that meet the length of time,and select the representative condition with a minimum average error of 4.15% from the overall data as the representative condition.Finally,from the characteristic parameters,environmental protection and energy saving and speed probability distribution,acceleration probability distribution,and speed-The joint distribution of acceleration probability is tested for the validity of the representative working conditions in three aspects.The results show that the average error of the characteristic parameters of the representative working conditions,the average error of the speed probability distribution,the average error of the acceleration probability distribution,and the average error of the speed-acceleration probability distribution are all less than 0.1%.At the same time,it has a significant role in evaluating environmental protection and energy saving,so it can Really and effectively reflect the actual road driving situation in the city.