两挡纯电动公交车传动系传动比优化

Optimization of transmission ratio of two-speed pure electric bus drive train

文章主要以某型两挡纯电动公交车为研究对象,根据其整车参数设计的要求,对整车动力系统进行合理、有效的配置,通过其传动比的优化,使其整车动力性和经济性得到进一步提高。在动力性和经济性两个分目标函数下,利用ADVISOR软件建立纯电动公交车整车仿真模型,分别利用FMINCON函数和遗传算法两种优化算法,在MATLAB上进行编程。经优化前后仿真结果对比显示,遗传算法比FMINCON函数对整车优化结果更为有效。

This paper mainly takes a certain type of two-speed pure electric bus as the research object.According to the requirements of the vehicle design,the vehicle power system is configured reasonably and effectively.Through the optimization of the transmission ratio,the vehicle's power and Economic efficiency has been further improved.Under the two objective functions of dynamic and economical,the simulation model of pure electric bus was built by ADVISOR software,and the two optimization algorithms of FMINCON function and genetic algorithm were used to program on MATLAB.The comparison of simulation results before and after optimization shows that the genetic algorithm is more effective than the FMINCON function for vehicle optimization results.