混合动力车辆自动机械变速器换挡过程分析与控制  

Analysis and Control of the Shifting Process of AMT in HEV

作　　者：沈文臣 胡宇辉[1,2] 席军强[1,2] 陈慧岩[1,2] 

机构地区：[1]北京理工大学机械与车辆学院,北京100081 [2]北京理工大学智能车辆研究所,北京100081

出　　处：《汽车工程》2016年第3期337-343,共7页Automotive Engineering

基　　金：国家自然科学基金青年基金(51505029)资助

摘　　要：基于"虚拟离合器"技术的自动机械变速器换挡过程的关键是动力中断过程中电机的主动同步与执行机构的挂挡控制。通过对自动机械变速器中同步器的接合机理分析,提出一种基于电机转矩控制的变速器输入端主动同步方法,即通过电机的转矩输出取代传统同步器依靠换挡力产生的同步摩擦力矩来消除进挡过程中同步器主从动部分的转速差。试验验证的结果表明,基于电机转矩控制的自动机械变速器换挡过程控制方法可以降低同步器的磨损,缩短动力中断的时间,提高进挡成功率与可靠性。The keys to the shifting process of automatic mechanical transmission（ AMT） based on＂virtual clutch＂technology are the active synchronization of motor and the shift-in control of actuator in the process of power interruption. Through an analysis on the engagement mechanism of AMT synchronizer,an active synchronization method of transmission input shaft based on motor torque control is proposed,in which the synchronous friction torque generated by shifting force in traditional synchronizer is replaced by motor output torque to eliminate the rotation speed difference between the driving and driven parts of synchronizer. Finally the results of verification test show that the AMT shifting control method based on motor torque control can reduce the wear of synchronizer,shorten the time of power interruption and enhance the success rate and reliability of up shifting.

关 键 词：混合动力车辆 机械自动变速器 换挡过程 转矩控制 

分 类 号：U469.7[机械工程—车辆工程] U463.2[交通运输工程—载运工具运用工程]