加速度检测仪数据校正

On Data Adjustment of Acceleration Detector

本文讨论声屏障检测仪检测振动加速度的误差分析、仿真研究、校正,并计算声屏障振动的速度、位移,利用机理分析法建立数学模型求解。问题一:先用matlab绘出原始数据图像,然后通过梯形积分方法,求得声屏障的速度、位移和对应的图像;通过matlab的Jarque-Bera正态检验算法,将图像与题目中所给理想状态下曲线进行比较分析,求得随机误差、系统误差对测量结果的影响程度。问题二:首先采用滑动平均滤波法消除随机误差,对积分后的信号采用LMS算法对误差趋势项分别进行一次拟合与二次拟合,求出拟合表达式,然后进行波形修正得到正确的速度和位移图像,最后通过图像验证计算结果。问题三可尝试用在医学信号处理等方面。

This paper discusses the error analysis, simulation re- search and correction of detecting vibration acceleration by sound barrier detector, calculates the speed and displacement of sound barrier vibration, and builds a mathematical model to solve the problems through mechanism analysis. Problem One： First, the original data image id drawn using matlab, and then through trapezoidal integration method, the speed, displacement and the corresponding image of sound barrier are calculated; through the Jarque-Bera normal test algorithm of matlab, a comparative anal- ysis on the curves is made under the ideal conditions given in images and problems, and the influence of random error and sys- tem error on the detection result is calculated. Problem Two： First, the sliding average filtering method to eliminate random er- ror, and the first fitting and the second fitting are carride out re- spectively on the error tendencies for the signals after the inte- gration by using LMS algorithm, then the fitting expression is cal- culated, and then obtain the correct speed and displacement im- age are obtained through waveform correction, and finally the re- sult is verified through image. Problem Three,it can be attempted in medical signal treatment.