基于ESP的纯电动汽车稳定性控制及仿真  

Stability Control and Simulation for Battery Electric Vehicle Based on ESP

作　　者：方春杰[1] 

机构地区：[1]重庆交通大学

出　　处：《汽车工程师》2018年第6期39-43,54,共6页Automotive Engineer

基　　金：重庆市重点实验室项目(csct2015yfpt_zdsys30001);重庆市自然科学基金重点项目(CSTC2013yykf B0184)

摘　　要：为了避免纯电动汽车在高速移线换道等极限工况下发生失控,在Car Sim中建立纯电动汽车整车参数化模型,并采用MATLAB/Simulink搭建汽车驱动电动机模型、3自由度车辆参考模型及电子稳定程序(ESP)的LQG控制模型。结合ISO 3888紧急双移线工况,对纯电动汽车ESP控制策略进行了联合仿真验证,仿真结果表明,该控制方法能够较好地减小汽车横摆角速度和质心侧偏角,保证车辆良好的轨道跟踪能力,有效地提高了极限工况下纯电动汽车的操纵稳定性和行驶安全性。In order to avoid the out of control of a battery electric vehicle under extreme conditions,such as high speed lane change, aiming at the battery electric vehicle, the parametric vehicle model is established in Car Sim, and the drive motor model, the LQG control model of ESP for the vehicle along with the 3-DOF reference vehicle model are established in MATLAB/Simulink. Combined with the ISO 3888 emergency double lane change condition, the ESP control strategy for the battery electric vehicle is co-simulated and validated. The simulation results show that the control method can reduce yaw rate and vehicle slip angle better, ensuring good track ability of the vehicle, which effectively enhances the handling stability and driving safety of a battery electric vehicle under extreme conditions.

关 键 词：纯电动汽车 极限工况 电子稳定程序 LQG控制 

分 类 号：U469.72[机械工程—车辆工程]