基于窗函数设计的FIR滤波器在车辆动态试验中的应用

Application of FIR Filter in Dynamic Vehicle Test Based on Window Function Design

本文对基于窗函数设计方法的ＦＩＲ滤波器进行了特性分析，并采用Ｈａｍｍｉｎｇ窗函数设计了ＦＩＲ滤波器。在兼顾实时性要求的基础上，用Ｖｉｓｕａｌ Ｃ＋＋编制了计算程序，应用在车辆换档试验的数据采集系统中，效果良好。

It was introduced five kind of FIR filter based on window function design in this paper,and a filter was designed by Hamming window method.A simulation was performed in MATLAB/Simulink to acquire the filters'characteristic. Considering real-time performance of the filter in practice ,a minor window width was determined.Proofed by facts,the filter is effective.