周期振动信号测量优化方法的探讨  

Discussion of Optimizing Method for Periodic Vibration Signal Measurement

作　　者：杭柏林[1] 刘鑫 

机构地区：[1]青岛科技大学机电工程学院,青岛266042 [2]青岛软控股份有限公司,青岛266045

出　　处：《科学技术与工程》2009年第13期3822-3825,共4页Science Technology and Engineering

基　　金：国家科技支撑项目(2007BAF14B00)资助

摘　　要：针对周期振动信号测量过程中受到的各种干扰,根据分析傅立叶变换和数字滤波器基本原理,选取FIR带通滤波器作为滤除干扰信号的方法。并通过实验比较该滤波方法的多种使用方案,结合对信号采集周期的选取提出了一种适合此类周期振动信号的最佳优化方法。实验结果表明,该方法能够成功提取有用信号,既保证数据的稳定性又提高了信号的测试效率。In order to eliminate the disturbance in periodic vibration signal measurement,based on analyzing the principle of Fourier transform and digital filter, FIR band-pass filter as the method of removing the disturbance is selected. Having used the method in various ways and chose the different periods, it can advance a best way for eliminating the disturbance through the experiment. The result of experiment show that this method can succeed in taking the useful signal. And it can greatly enhance the testing efficiency on the condition of the signal stabilization.

关 键 词：周期振动信号 傅立叶变换 窗函数 标准偏差 

分 类 号：TN911.25[电子电信—通信与信息系统]