基于Isight的车辆速比优化匹配设计

Optimization matching design for vehicle speed ratios based on the Isight

为进一步提高车辆动力性和经济性,针对车辆传动系速比进行整车仿真与优化设计。为有效解决多目标优化问题,将整车动力性指标作为约束条件、经济性为优化目标进行Cruise和Isight联合仿真。结合某四驱车辆传动比原始数据,速比优化仿真结果显示,车辆的性能有较好地提升。

To further improve the dynamic performance and fuel economy of vehicles, simulation and optimization design for vehicle drivetrain speed ratio was developed. To solve multi-objective optimization problem effectively, the vehicle dynamic performance was considered as constraint condi- tion and the vehicle＇ s economy was taken as the optimization goal to conduct joint simulation based on the Cruise and Isingt. As compared with the original ratios of a four-wheel drive vehicle, the ootimal simulation results show that the performance of the vehicle is considerably improved.