测量有源滤波电路频率响应的虚拟扫频仪设计  

Virtual Frequency Sweeper Design for the Measurement of Active Filter Circuit Frequency Response

作　　者：谢路生[1] 陈晓玉[1,2] 李继芳[1] 林春[1] 曾念寅[1] 

机构地区：[1]厦门大学航空航天学院,福建厦门361005 [2]厦门大学嘉庚学院,福建漳州363105

出　　处：《实验室研究与探索》2016年第8期91-93,147,共4页Research and Exploration In Laboratory

基　　金：国家自然科学基金(61403319);福建省自然科学基金(2015J05131)资助项目

摘　　要：为了满足有源滤波电路等模拟电子电路频率响应测量的需要,克服传统测试方法中仪器比较多,步骤较复杂且容易产生较大误差的缺陷,介绍了一种基于LabVIEW的虚拟扫频仪设计方法。简述了该扫频仪的整体设计方案和测量原理,详述了扫频仪主要的软件设计模块。实验结果表明,该扫频仪能直观测试电路的频率特性及绘制出相应的幅频特性和相频特性曲线,能较好的满足有源滤波电路频率响应的测量。In order to satisfy needs of frequency response measurement of the analog electronic circuits such as the active filter circuit,and overcome defects of the traditional testing method such as equipment is more,steps are too complicated and prone to a larger error,a design method of virtual frequency sweeper based on LabVIEW is introduced in this paper.The overall design scheme and measurement principle of the frequency sweeper are described briefly,main software modules of the frequency sweeper are described in detail. The experimental results show that the frequency characteristic of the frequency sweeper can direct test circuit and draw the corresponding amplitude-frequency characteristic and phase frequency characteristic curves. The virtual frequency sweeper can better carry out the active filter circuit frequency response measurement.

关 键 词：有源滤波电路 虚拟扫频仪 频率响应 LABVIEW 

分 类 号：TP311.5[自动化与计算机技术—计算机软件与理论]