摘要
基于虚拟仪器(Ⅵ)LabVIEW6.1软件平台,采用相关估计算法,设计Ⅵ程序,利用Ⅵ程序辨识微弱信号中的工频噪声(或以工频为整倍数的噪声),从而消除工频噪声干扰。本文辨识方法也适应其它正弦噪声的辨识。最后,举一个例子,用虚拟仪器测量的数据最大相对误差为0.12％。
Based on virtual instrument(VI)LabVIEW6.i software workbench, design VI programme to use correlation estimation algorithm. Using this VI programme identify industrial frequency noise in Faint Signal (or the noise of integer times industrial frequency).As a consequcence, industrial frequency noise disturbance is eliminated. This means of indetification suit to identify other sinusoidal noise too.At last, an example, Using virtual instrument to measure it, greatest relative error of the measurment numbers is 0.12%.
出处
《现代仪器》
2003年第2期43-45,共3页
Modern Instruments
关键词
虚拟仪器
相关估计算法
工频噪声
LABVIEW
Virtual instrument Correlation estimation algorithm Industrial frequency noise LabVIEW
