摘要
针对某款纯电动汽车用两挡机械式自动变速器,设计了由无刷直流电机驱动,蜗轮蜗杆及凸轮转毂改变动力传递的方向,并通过拨叉带动同步器运动的换挡执行机构,建立了同步器及换挡执行机构ADAMS多体动力学模型,以模拟同步器同步的各个阶段,以及换挡机构的升挡及降挡过程。通过仿真,评价换挡电机功率,蜗轮蜗杆传动比、接合套与待接合齿圈转速差、以及待接合部分转动惯量等参数对换挡过程的影响,从而对换挡执行机构参数进行优化。
The shift actuator which is designed for the two-speed AMT of electric vehicles is proposed in this paper. The shift actuator is driven by brushless DC motor （BLDC） and is made up of worm reducer,cam hub, fork and synchronizer. The ADAMS multi-body dynamics model of the synchronizer and shift ac- tuator is established to simulate the synchronization of the synchronizer and the upshift and downshift of the gearshift mechanism. Through the simulation, the effects of the parameters such as the shifting power of motor, worm ratio, the speed difference between sleeve and gear ring, rotary inertia of the part to be en- gaged are analyzed. And optimizations of parameters are proposed.
出处
《传动技术》
2017年第1期43-48,共6页
Drive System Technique
基金
山东省科技重大专项资助
项目编号2015ZDXX0601C01
