汽车纵向加速度滤波算法

研究基于车速信号的汽车实时加速度获得方法. 采用对车速信号进行滤波、差分、再滤波的方法获得了具有良好实时性和精度的汽车纵向加速度. 介绍了速度和加速度的功率谱分析方法,完成了Matlab环境下基于Fdatool工具箱的Fir数字低通滤波器的设计,提出了一种适合汽车实时应用的加速度滤波算法,并实现了该算法在单片机中的应用. 实车试验表明,该算法具有良好的实时性和精度.

Filter Algorithm for Longitudinal Acceleration of Vehicles

To investigate the method to obtain the real-time longitudinal acceleration based on its velocity,vehicle acceleration is obtained through the velocity filtering,differential,and then filtering.Power spectrum analysis of velocity and acceleration is discussed and its Fir lowpass digital filters are designed with Fdatool box in the Matlab development environment.A kind of algorithm fitted for real-time use by a vehicle is developed and its application in microcomputer is discussed.The experimental results re...