摘要
在能源危机和环境问题的双重压力下,纯电动汽车以零排放、低噪声和电能来源广泛等优点引起了各国政府和汽车企业的重视。以城市用纯电动汽车为研究对象,分析研究其动力传动系统的参数,根据整车参数和动力性、经济性要求匹配整车动力系统参数。从提高传动效率来对初步匹配出的动力系统参数进行优化,以加速时间最短和工况续驶里程最大为优化目标,用惩罚函数将目标函数和约束条件构成关于传动速比的适应度函数,通过遗传算法进行优化,最终得到动力系统最优参数。
Under the double pressures of energy crisis and environmental problems,the governments and the automobile enterprises have paid much attention to the pure electric vehicle which has advantages of zero emission,low noise and wide range of energy sources.Electric car is not very different from conventional cars,whether in the main structure or in the appearance.The main change is made in terms of drivetrain.Taking the pure electric city car as our research target,the power transmission system parameter is analyzed and designed,according to the vehicle parameters,power and economy requirements,the vehicle power system parameter is matched.The matched parameters of power system preliminarily is optimized from improving the transmission efficiency,taking the shortest time of acceleration and working conditions driving range maximum as optimization goal.The fitness function of transmission speed ratio is constituted of objective function and constraints condition by using a penalty function.The optimization is carried out by genetic algorithm,the optimal parameters of power system are obtained.
出处
《机械传动》
CSCD
北大核心
2017年第2期22-26,共5页
Journal of Mechanical Transmission
基金
江苏省第九批六大人才高峰高层次人才资助项目(2012-ZBZZ-047)
关键词
城市用纯电动汽车
动力系统
参数匹配
优化
Pure electric city vehicle
Powertrain
Parameter matching
Optimization
