面向模式切换过程的混合动力汽车动力协调控制  

Mode-transition-process-oriented Coordination Control for Hybrid Electric Vehicle

作　　者：陈信强 田翔 王新树 CHEN Xinqiang;TIAN Xiang;WANG Xinshu

机构地区：[1]奇瑞新能源汽车股份有限公司,芜湖241000

出　　处：《上海汽车》2025年第1期26-32,共7页Shanghai Auto

摘　　要：针对混合动力汽车模式切换过程中出现动力源响应不同步、车辆平顺性下降等问题,提出了一种面向模式切换过程的混合动力汽车动力协调控制策略。以车辆由纯电动模式向混合驱动模式切换过程为研究对象,依据离合器状态划分模式切换过程。在离合器滑摩阶段,基于保群算法的滑模控制构造该阶段车辆动力学常微分方程,引入Runge-Kutta法进行方程求解获得动力系统的控制量;在离合器完全接合后,通过最小二乘支持向量机构造发动机转矩在线观测器,利用分布估计算法对最小二乘支持向量机的参数进行寻优,将观测得到的发动机转矩作为反馈量,实现车辆驱动转矩的闭环控制。在MATLAB/Simulink中搭建了车辆动力学仿真模型,并进行了仿真验证,结果表明:文章所提出的控制策略能够很好地实现动力源之间的协调控制,在满足驾驶员的转矩需求前提下,提高了整车的平顺性与可靠性。Aiming at the problems of unsynchronized power source response and decreased vehicle smoothness during mode transition of hybrid electric vehicles,a coordination control strategy oriented to the mode transition process is proposed.Taking the switching process from pure electric driving mode to hybrid driving mode as the research object,the mode transition process is divided ac-cording to the clutch state.In the clutch slip phase,the ordinary differential equations of the vehicle dynamics is constructed by sliding mode control based on the group-preserving algorithm,and the Runge-Kutta method is introduced to solve the equations to obtain the control quantities of the power system.After the clutch engaged,an online observer of the engine torque is constructed by least squares support vector machine,and the parameters of the least squares support vector machine are optimized by distribution estimation algorithm,and the observed engine torque is used as the feed-back quantity to realize the closed-loop control of the vehicle driving torque.A vehicle dynamics simu-lation model is built in MATLAB/Simulink and simulation verification is carried out,and the results show that the proposed control strategy can realize the coordinated control between the two power sources,which improves the smoothness and reliability of the vehicle under the premise of satisfying the torque demand of the driver.

关 键 词：模式切换 驱动电机 滑模控制策略 动力协调控制 混合动力汽车 

分 类 号：U46[机械工程—车辆工程]