汽车工程, 行驶工况, 因子分析, 运动学片段

As for the reseach of construction process of vehicle driving cycle, a method of factor analysis combined with fuzzy clustering was proposed herein,and a representative driving cycle was developed urban roads by this method. The method of factor analysis was applied to reduce the characteristic parameters of many microtrips, all microtrips were classified by using 3 common factors that can represent most of the features of the original microtrips; Based on the results of cluster analysis and the correlation coefficient theory,some representive microtrips were extracted from each type of microtrips to construct a typical driving cycle. The application of the driving cycle model to the roads in Hefei city shows that the average error in obtained typical driving cycles is 13.01% compared with the experimental data in terms of V-A matrix of the typical driving cycle.So the typical driving cycle can reflect Hefei road traffic condition comprehensively. 

automotive engineering, driving cycle, factor analysis, microtrips