Construction and Simulation Analysis of Driving Cycle of Urban Electric Logistic Vehicles 2020-01-1042
In order to reflect the actual power consumption of logistics electric vehicles in a city, sample real vehicle road data. After preprocessing, the short-stroke analysis method is used to divide it into working blocks of no less than 20 seconds. Based on principal component analysis, three of the 12 characteristic parameters were selected as the most expressive. K-means clustering algorithm is adopted to obtain the proportions of various short strokes, according to the proportion, select the short stroke with small deviation degree to combine, and construct the driving cycle, it has the characteristics of low average speed, high idle speed ratio and short driving distance. AVL-cruise software builds the vehicle model and runs the driving cycle of urban logistic EV. Compared with WLTC, the difference in power consumption is 34.3%, which is closer to the actual power consumption, the areas with the highest motor speed utilization are concentrated only in the idle area. Therefore, the driving cycle is consistent with the actual use conditions of low average speed and high idle speed of urban logistics vehicles, which can provide theoretical basis for power matching, economic analysis and control strategy optimization of urban logistic EV, so as to achieve the purpose of saving energy and enhancing endurance.