数字滤波技术在汽车碰撞试验中的应用研究  

Research on the Application of Digital Filter Technology in Auto Crash Test

作　　者：白中浩[1] 曹立波[1] 乐中耀[1] 

机构地区：[1]湖南大学机械与汽车工程学院,湖南长沙410082

出　　处：《湖南大学学报（自然科学版）》2005年第2期13-16,共4页Journal of Hunan University:Natural Sciences

基　　金：国家自然科学基金资助项目(10172033)

摘　　要：为了使开发的汽车碰撞试验系统的数据处理结果满足CMVDR294法规要求,研究了汽车碰撞试验数据处理过程中的关键技术.根据汽车碰撞试验的具体要求改进了数字滤波器的设计过程,并应用Matlab进行了不同频率的幅频特性仿真分析,提出了一种能够简化设计过程、提高计算精确性的数字滤波器设计方法,并根据该方法在LabVIEW平台上开发了满足法规要求的数字滤波器.同时,通过对大量的碰撞试验数据进行分析处理,验证了该数字滤波器能够有效屏蔽原始数据中的噪声与高频分量,幅值不失真.In order to make the data processing results of the auto crash test system satisfy the requirement of the CMVDR 294 regulation, the key technology in the data processing was studied.First, the amplitude-frequency properties of the filter were simulated and analyzed at different frequency with Matlab.Then, an improved design method for digital filter was proposed, which can simplify process and improve calculation accuracy. Based on LabVIEW software, a data processing system was developed. The model can satisfy the requirement,because a lot of tests proved that the digital filter could effectively filter noise and high-frequency information in the original data, and that the amplitude was not distorted.

关 键 词：数字滤波 汽车碰撞试验 数据处理 幅频特性 

分 类 号：U463.81[机械工程—车辆工程]