基于虚拟仪器技术的频率测量  

Measurement of Frequency Based on Virtual Instruments Technology

作　　者：解东光[1] 任先文[1] 张吉[1] 

机构地区：[1]东北电力学院,吉林吉林132012

出　　处：《吉林电力》2004年第6期16-17,44,共3页Jilin Electric Power

摘　　要：在介绍PCI 2003采集卡及Labview6.1特点基础上,阐述了基于虚拟仪器技术频率测量的基本原理、计算 方法和流程,结合数字信号处理算法,利用泰勒公式解决在频率测量中过零法存在的误差问题,提高了频率的测量 精度。最后给出了被测信号相位变化与不变情况下的仿真结果。By means of the virtual instruments technology, this paper accomplishs signal frequency measurement. It is made that uniform signal sampling by PCI2003,the measuring frequency program and the connection via CIN between domestic data acquisition card PCI2003 and Labview6. 1. With digital signal processing algorithms, Taylor formula is used to improve the measuring error of the zero crossing method and the measuring accuracy. Finally, the program of frequency measurement and its emulation results are given in this paper.

关 键 词：频率测量 虚拟仪器技术 PCI2003 LABVIEW6.1 

分 类 号：TM935[电气工程—电力电子与电力传动]