利用前馈控制提升底盘域控车辆的横摆稳定性研究  

Research on Improving the Yaw Stability of Chassis Domain Control Vehicle by Using Feedforward Predictive Control

作　　者：冯浩轩 赵翠发 夏金龙 李贵宾 司凯中 FENG Haoxuan;ZHAO Cuifa;XIA Jinlong;LI Guibin;SI Kaizhong(Geely Automobile Research Institute(Ningbo)Company Limited,Ningbo 315204,China)

机构地区：[1]吉利汽车研究院(宁波)有限公司,浙江宁波315204

出　　处：《汽车实用技术》2024年第13期49-55,共7页Automobile Applied Technology

摘　　要：为了进一步提高底盘域控车辆的横摆稳定性控制能力,设计了一种双层结构的底盘域控系统,并研究分析了前馈预测控制对底盘域控车辆横摆稳定性的影响。该策略通过前馈预测计算出的横摆角速度预测值,与车辆横摆角速度目标值和车辆实际横摆角速度进行计算,得到最终横摆偏差值。最后通过方向盘阶跃工况和正弦转向工况进行MATLAB&CarSim联合仿真和实车实验分析。实验结果表明,相较于单纯反馈的控制,具备前馈预测控制的底盘域控车辆可以更好地提升车辆的响应能力和车辆的横摆稳定性,特别是在连续转向的情况下,车辆横摆稳定性改善更加明显。In order to further improve the yaw stability control ability of chassis domain control vehicle,a double-layer chassis domain control system is designed and the influence of feedforward predictive control on the yaw stability of chassis domain control vehicle is studied.In this strategy,the predicted yaw velocity calculated by feedforward prediction is calculated with the target value of vehicle yaw velocity and the actual yaw velocity to get the final yaw deviation value.Finally,MATLAB&CarSim co-simulation and real vehicle experiment are carried out through steering wheel step conditions and sine steering conditions.The experimental results show that compared with the simple feedback control,the chassis domain control vehicle with feedforward predictive control can better improve the vehicle response ability and the vehicle yaw stability,especially in the case of continuous steering,the vehicle yaw stability improvement is more obvious.

关 键 词：横摆稳定性 前馈控制 底盘域控 联合仿真 MATLAB&CarSim 

分 类 号：U463.4[机械工程—车辆工程]