基于ADAMS/DRIVELINE的VDT-CVT的建模与仿真

为带有液力变矩器的金属带式无级变速器（CVT）进行分析和预判，应用软件ADAMS/DRIVELINE对CVT传动系统进行建模、仿真分析，得到了涡轮输出扭矩曲线，CVT输出轴角速度、角加速度和扭矩曲线。涡轮输出扭矩仿真结果，CVT输出扭矩仿真结果都表明，在第1和第3秒之间输出扭矩处于波谷，此时间区域输出扭矩的波动最为频繁，会使汽车舒适性降低。对比CVT扭矩输出试验结果和仿真结果，平均误差为8％，如果增大模型仿真的计算步长，误差会进一步降低。所建模型正确可信，可以对无级变速器的研究工作起预判和指导作用，是对无级变速器进行研制的方便工具，具有较大实用价值。

Modeling and simulation of VDT-CVT based on ADAMS/DRIVELINE

To analyze and predict the power train of metal V-belt type of continuously variable transmission(CVT)with torque converter,after modeling the power train of CVT and analyzing its working process with ADAMS/DRIVELINE,the curve of turbine output torque,CVT output shaft torque,the curve of CVT output shaft angle velocity and angle acceleration are obtained.The simulation result of turbine output torque and CVT output shaft torque shows that the output torque is the lowest from 1st second to 3rd second,the output torque changes frequently in this time,which will make passenger uncomfortable.Compared the simulating result with test result,average error is 8 %.If the computed step increased,the error will further decrease.The model is correct and credible and,it is a convenient tool with usefulness which can predict and guide the work on CVT.