混合动力车辆发动机启动平顺性控制  

The Ride Comfort Control of Hybrid Electric Vehicle During Engine Starting Process

作　　者：刘辉[1,2] 张万年 张伟 LIU Hui;ZHANG Wan-nian;ZHANG Wei(School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China;National Key Lab of Vehicular Transmission,Beijing 100081,China)

机构地区：[1]北京理工大学机械与车辆学院,北京100081 [2]车辆传动国家重点实验室,北京100081

出　　处：《机械设计与制造》2023年第6期57-61,67,共6页Machinery Design & Manufacture

基　　金：国家自然科学基金(51775040)。

摘　　要：混合动力车辆由纯电动模式切换到混合驱动模式的过程伴随着发动机的启动,由于发动机转矩的介入,导致输出转矩剧烈波动,进而造成整车冲击等问题。以双模混联式机电复合传动为研究对象,对发动机启动过程进行了动力学建模和分析,并将其划分为三个阶段分别进行控制。针对电机反拖发动机过程,以减小整车冲击度和抑制输出转矩波动为目标,提出了基于模型预测控制的转矩协调控制策略。最后,利用MATLAB/Simulink仿真平台,对控制策略进行了验证。仿真结果表明,所提出的控制策略能有效抑制输出转矩波动,降低整车冲击度,提高发动机启动过程的平顺性。In the process of switching from pure electric mode to hybrid drive mode,the intervention of engine torque causes the output torque to fluctuate violently,which leads to the impact and other problems of hybrid electric vehicle(HEV).The dualmode hybrid electromechanical composite transmission is taken as the research object,and the engine starting process is modeled and analyzed.In order to reduce the impact and torque fluctuation of the whole vehicle,a ride comfort control strategy based on model predictive control(MPC)is designed.Finally,the ride comfort control strategy is verified by MATLAB/Simulink simulation platform.The simulation results show that the proposed control strategy can effectively suppress the output torque fluctuation,reduce the vehicle impact and improve the ride comfort of the engine starting process.

关 键 词：混合动力车辆 发动机启动 模型预测控制 平顺性 协调控制 

分 类 号：TH16[机械工程—机械制造及自动化] TH11