电动汽车机械自动变速器挂挡分析与控制  

Shift analysis and control of automatic mechanical transmission of electric vehicle

作　　者：陈明鑫 CHEN Mingxin(Department of Environment and Life,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]北京工业大学环境与生命学部,北京100124

出　　处：《陕西理工大学学报（自然科学版）》2023年第6期39-49,共11页Journal of Shaanxi University of Technology:Natural Science Edition

摘　　要：以纯电动汽车两挡AMT作为研究对象,对换挡过程进行划分和动力学分析,分析同步器对两挡AMT换挡性能的影响。针对同步器换挡机理以及换挡过程进行研究,将挂挡控制过程分为三段。在此基础上,考虑换挡力对换挡品质的影响,提出同步器分段挂挡控制方法,制定符合两挡AMT换挡品质要求的换挡力控制律,并通过仿真进行验证。最后根据换挡控制方法,建立两挡AMT实验系统,基于RapidECU-U2M快速原型开发换挡控制器,完成实验台架搭建。进行同步器分段换挡实验,与普通换挡实验做对比,结果表明:在不增加换挡时间前提下,该控制方法减小了变速箱输出轴转速波动,有效抑制了换挡冲击,提升了换挡品质。This article takes the two-gear AMT of pure electric vehicle as the research object,and firstly divides the shifting process and does dynamics analysis.The study analyzes the influence of synchronizer on the shifting performance of two-gear AMT.Secondly,the synchronizer shifting mechanism and shifting process are studied.The shifting control process is divided into three stages.On this basis,the influence of shifting force on shifting quality is considered,and the synchronizer segmental shifting control method is proposed to develop a shifting force control law that meets the requirements of two-gear AMT shifting quality,which is verified by simulation.Finally,according to the shift control method,the two-gear AMT experimental system is established.The shift controller(TCU)is developed based on RapidECU-U2M rapid prototype,and the experimental bench is completed.The result shows that the control method reduces the output shaft speed fluctuation of the transmission and does not increase the shift time,which indicates that the shift shock can be effectively suppressed and the shift quality can be improved.

关 键 词：电动汽车 同步器 AMT 弹性轴 主动阻尼 换挡冲击 

分 类 号：U469.72[机械工程—车辆工程]