汽车安全气囊控制器验证方法及实现  

Validation method of airbag controller and its application

作　　者：白中浩[1] 刘玉云[1] 王玉龙[1] 

机构地区：[1]湖南大学汽车车身先进设计制造国家重点实验室,湖南长沙410082

出　　处：《长安大学学报（自然科学版）》2015年第1期120-126,共7页Journal of Chang’an University(Natural Science Edition)

基　　金：国家自然科学基金项目(51105137);国家高技术研究发展计划项目(2012AA111802)

摘　　要：针对在安全气囊控制器开发过程中需要进行大量实车或台车碰撞试验,获得点火阈值验证曲线试验工作量大、成本高昂的问题,进行了可提高开发效率降低开发成本试验方法的替代方案研究。基于安全气囊控制器工作原理,提出了一种利用摆锤冲击滑车模拟汽车碰撞前期30ms加速度波形的试验方法,替代安全气囊控制器前期开发的台车试验验证,开发出了相应的试验装置,建立并验证了该系统的有限元模型。基于实际碰撞中加速度的差异性,引入双梯形理论对实车碰撞曲线进行了简化,并应用该方法模拟简化后的加速度曲线,并对某新开发的气囊控制器进行试验验证。研究结果表明:该验证方法得到的安全气囊点火判断曲线与实车碰撞试验获得的曲线最大误差在10%以下,采用摆锤冲击滑车的模拟碰撞波形的试验方法可以用于安全气囊控制器的开发设计。The cost of the development of airbag controller is very expensive for that generally required dozens of vehicles or sled tests to get ignition curve.To resolve this problem,this paper proposed an experimental method based on airbag controller works to simulate acceleration curves the pre-30 ms of crash by impacting tackle with a pendulum,and developed the related apparatus.A finite element model was established and verified by relevant experimental results.A theory of dual trapezoidal curve was introduced to simplify automotive impact acceleration curves based on the difference of crash acceleration every time.A new developing airbag controller was verified by simulating the simplified acceleration.Test results show that the maximum error between the value of airbag ignition obtained by the method and the value of the actual ignition is less than 10%,which proves that the method can be used for the development and design of the airbag controller.

关 键 词：汽车工程 控制器验证 摆锤冲击 安全气囊 

分 类 号：U491.6[交通运输工程—交通运输规划与管理]