基于MATLAB的振动信号消除趋势项处理方法

在汽车整车振动数据采集时前端受车载电源、温度及噪声等外部环境的干扰,使采集到的数值偏离真实数值,给后续信号处理带来了误差甚至错误.这里介绍了对车辆振动原始信号进行消除趋势项处理的主要方法,并在MATLAB编程平台上进行算法编程实现,给出了主要的程序代码.结果表明,振动信号在消除趋势项后得到了较好的改善.

Treatment method to eliminate tendency item based on vibration signal of MATLAB

When data collection of automotive vibration,front end is by interference of vehicle power, temperature and noise from external environment,make the collected numerical value deviating from the real numerical value, which brought error even mistake for the following signal process.Here introduce the main method of eliminating tendency item processing for the original signal of vehicle vibration,and do algorithm for the programming oon MATAB B programming platform,give out main program code. The consequence shows, vibration signal obtains better imDrovement after in eliminatin~ tendencv item.