基于FPGA的高精度失真度测量仪  

High-precision distortion measuring instrument based on FPGA

作　　者：莫燕斌 岑立航 龙妹 朱柏旭 戴汉桥 张忠傲 林桂安 Mo Yanbin;Cen Lihang;Long Mei;Zhu Baixu;Dai Hanqiao;Zhang Zhongao;Lin Guian(College of Physics and Telecommunication Engineering,Yulin Normal University,Yulin Guangxi,537000)

机构地区：[1]玉林师范学院物理与电信工程学院,广西玉林537000

出　　处：《电子测试》2022年第18期34-37,共4页Electronic Test

基　　金：玉林师范学院创新创业训练计划项目(202110606138)。

摘　　要：为了实现失真度测量仪器的高精度运算并降低系统成本,以FPGA控制器和STM32F429微处理器为控制和检测核心,利用快速傅里叶变换,设计了一款基于FPGA的高精度失真度测量仪,对信号谐波、频率、电压峰值进行高精度测量,实现对信号的失真度测量。实验测量结果表明,该失真度测量仪的信号谐波失真度测量误差为±0.05%,频率测量误差为±0.03Hz,峰值测量误差为±10m V。该测量仪具有精度高、性能稳定,可应用于谐波的高精度测量。In order to achieve high-precision operation of distortion measurement instrument and reduce system cost,with the FPGA controller and STM32F429 microprocessor as the control and detection core,using fast Fourier transform,a high-precision distortion measuring instrument based on FPGA is designed to make high-precision measurements of signal harmonics,frequency and voltage peaks,and realize the distortion measurement of signals.The experimental measurement results show that the signal harmonic distortion measurement error of the distortion meter is ±0.05%,the frequency measurement error is ±0.03Hz,and the peak measurement error is ±10mV.The measuring instrument has high precision and stable performance,and can be applied to high-precision measurement of harmonics.

关 键 词：失真度测量 快速傅里叶变换 FPGA 谐波失真度 

分 类 号：TP216[自动化与计算机技术—检测技术与自动化装置]