城市客车传动系的优化模型数值计算

Numerical Calculations of Optimization Models for Automotive Drive line of Vehicle Buses in Cities

本文根据汽车理论知识,综合考虑汽车的动力性、经济性.基于数学优化模型设计思想,以原地起步加速时间、多工况百公里燃油消耗量作为汽车动力性、经济性建立多目标优化数学模型,结合数学软件MATLAB利用最小二乘法和曲面插值法进行动力传动系参数的数值计算.最后以城市客车为研究对象,进行了动力传动系统优化匹配研究,表明了优化数学模型数值计算的正确性和实用性.

The power performance and fuel economy estimation for vehicle buses were planned and designed according to the theoretical knowledge of cars. Based on the idea of mathematical optimization model designing,a mathematical model for multiobjective optimization was constructed according to the indexes of acceleration time from standing start( at) and fuel consumption per hundred kilometer at multiple operating conditions. Numerical calculation on powertrain parameters was finished by using least square method and interpolation method with mathematical software MATLAB. The correctness and practicability of the numerical calculation of optimization models on vehicle buses in cities was proved right by studying optimal matching for automotive driveline systems.