纯电动汽车简化闭环模型仿真分析研究  

Research on Simulation and Analysis of Simplified Closed-Loop Model for Pure Electric Vehicles

作　　者：李延 申彩英[1] LI Yan;SHEN Caiying(School of Automobile and Traffic Engineering,Liaoning University of Technology,Jinzhou 121001,China)

机构地区：[1]辽宁工业大学汽车与交通工程学院,辽宁锦州121001

出　　处：《现代车用动力》2024年第2期10-14,共5页Modern Vehicle Power

摘　　要：汽车动力性参数对汽车性能起着至关重要作用。基于比例、积分(PI)控制,等效电路模型,汽车行驶方程等理论设计纯电动汽车简化闭环模型,利用Matlab/Simulink软件进行模型搭建。在美国FTP75(轻型车测试规程)循环工况下进行仿真,得到目标车速、实际车速、加速度、爬坡度这些表征汽车动力性参数以及电池荷电状态(SOC)的变化曲线。最后利用逐步逼近思想设计模型优化算法,对目标车速与实际车速绝对误差进行优化,经迭代使其控制在±3 km/h以内。The vehicle dynamic parameters play a crucial role in the performance of automobiles.It designs a simplified closed-loop model of pure electric vehicles based on the theories of PI control,equivalent circuit model and automobile driving equation,and Matlab/Simulink software is used to build the model.The target vehicle speed,actual vehicle speed,acceleration and climbing degree are simulated under FTP75 cycle conditions,which characterize the changes of the dynamic parameters of the vehicle,as well as the change curves of the battery state of charge(SOC).Finally,the absolute error rate between the target speed and the actual speed is optimized by using the stepwise approximation idea design model optimization algorithm,and the absolute error rate is controlled within 3 km/h through iteration.

关 键 词：纯电动汽车 闭环模型 FTP75循环工况 模型优化 

分 类 号：U469.72[机械工程—车辆工程]