摘要
研究汽车天窗为车内通风的优化问题,可以有效降低侧窗通风时带来的高风噪和高胎噪,是一个很实用的配置。由于实验中发现天窗水平运动速度波动较大,容易造成防夹程序失灵或误防夹。为了改善天窗防夹控制,采用虚拟样机技术,运用逆向工程的方法,归纳了天窗的运动特性,建立了运动模型。使用用户自定义函数STEP拟合天窗运动速度曲线,得到了天窗运动过程的受力曲线,通过仿真分析受力状态与天窗位置的关系,结果证明,有效解决了天窗运动速度不稳定的问题,并为系统设计提供了指导依据。
Car sun-roof,a utility equipment for automobiles,is able to reduce the wind and tyre noise when side-windows are used to ventilate the interior of vehicles.The value of sun-roof＇s speed fluctuates sharply that likely brings about the problem that anti-pinch function does not work properly.The method of ADAMS reverse engineering was used to analyze the character of sun-roof＇s movement as well as build the motive model.The curve of sun-roof＇s load conditions was obtained through fitting the curve of sun-roof＇s movement by the function STEP.The basic cause of the instability was found out after analyzing the relationship between sun-roof＇s load conditions and its location.The result of simulation was testified via further experiments.
出处
《计算机仿真》
CSCD
北大核心
2011年第12期348-352,共5页
Computer Simulation
关键词
汽车天窗
逆向工程
运动模型
Car sun-roof
Reverse engineering
Motive model
