液力机械式自动变速器换挡过程综合控制策略研究  

Research on Integrated Control Strategy for Shifting Process of Automatic Transmission

作　　者：雷雨龙[1] 扈建龙[1] 郑雪松[1] 李兴忠[1] 付尧[1] LEI Yu-long;HU Jian-long;ZHENG Xue-song;LI Xing-zhong;FU Yao(State Key Laboratory of Automotive Simulationand Control,Jilin University, Changchun,Jilin 130000,China)

机构地区：[1]吉林大学汽车仿真与控制国家重点实验室,吉林长春130000

出　　处：《北京理工大学学报》2018年第A01期161-165,共5页Transactions of Beijing Institute of Technology

基　　金：国家自然科学基金资助项目(51575220);吉林省科技发展计划优秀青年人才基金项目(20180520071JH).

摘　　要：详细分析了AT动力升档过程的动力学原理,利用Matlab和LMS.Amesim软件搭建动力传动系统联合仿真平台,提出换挡过程分阶段控制策略,在扭矩相采用离合器摩擦转矩定斜率控制;惯性相进行最优跟踪控制,综合考虑换挡冲击度和离合器滑摩功确定性能指标泛函,利用极小值原理求解最优控制律;优化换挡时间,并给出换挡时间的计算流程.仿真和实车试验验证了控制策略的有效性,车辆换挡综合性能得到提升.In this paper,analyzing the dynamics principle of power shift process of automotive transmission(AT),a simulation platform was established for power transmission system with software MATLAB and LMS.Amesim.A phased control strategy was proposed for the power shift process,including torque phase and inertial phase.In the torque phase,the constant slope of friction torque was taken as the control objective,and the inertial phase was arranged for optimal tracking control.Considering the performance index function of the shift jerk and the clutch sliding work,the optimal control law was established based on the minimum principle,the shift time was optimized and the calculation process of the shift time was presented.The effectiveness of the control strategy was verified by simulation and real vehicle tests.The results show the control strategy can improve the comprehensive performance of vehicle shifting.

关 键 词：动力升档 最优控制 仿真试验和实车验证 自动变速器 

分 类 号：U463.212[机械工程—车辆工程]