摘要
基于相关估计算法设计了虚拟仪器 (VI)程序 ,利用VI程序辨识了工频噪声 (或以工频为整倍数的噪声 )中的微弱信号 ,从而消除了工频噪声干扰。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 12 186%。
Based on correlation estimation the algorithm of virtual instrument(VI) program is designed. The faint signal buried in line frequency noise(or the noise of integer times line freuqency) can be identified by this VI program. As a consequency, line frequency noise interference is eliminated. At last, an example of using virtual instrumentation, greatest relative error of the measured results is 0.12186%.
出处
《电气电子教学学报》
2003年第2期59-61,64,共4页
Journal of Electrical and Electronic Education
关键词
相关估计
虚拟仪器
工频噪声
VI程序
correlation estimation
virtual instrumentation
line frequency noise
