| 基于离散傅里叶变换的频率测量方法与应用 |
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| 引用本文： | 黄鹤,彭晓.基于离散傅里叶变换的频率测量方法与应用[J].湖南工程学院学报(自然科学版),2012(3):1-4. |
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| 作者姓名： | 黄鹤 彭晓 |
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| 作者单位： | 湖南工业大学电气学院;湖南工程学院电气信息学院 |
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| 基金项目： | 湖南省自科湘潭联合基金(10JJ9009) |
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| 摘 要： | 从对电源信号频率实时测量的应用需求出发,介绍了一种利用快速傅里叶变换的频率算法及其改进方法.为了快速对信号进行采集和运算,设计了一种基于FPGA、DSP硬核和新型AD转换芯片构成的数据采集计算系统,该系统利用可编程逻辑器件FPGA将多个功能模块连接在一起,完成了对A/D转换芯片及双口RAM等模块的控制;给出了系统硬件原理框图和算法流程图,并结合系统的设计方案对其中的主要功能模块进行了阐述;仿真表明了该算法的合理性和正确性,具有简单、速度快、精度高等特点.
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| 关 键 词： | 傅里叶变换 频率 FPGA |
Research on Variable Frequency Converter Measurement System Based on Adaptive Synchronous Sampling |
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| HUANG He,PENG Xiao.Research on Variable Frequency Converter Measurement System Based on Adaptive Synchronous Sampling[J].Journal of Hunan Institute of Engineering(Natural Science Edition),2012(3):1-4. |
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| Authors: | HUANG He PENG Xiao |
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| Institution: | 1.Hunan University of Technology,Zhuzhou 412000,China; 2.College of Elect.and Information,Hunan Institute of Engineering,Xiangtan 411104,China) |
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| Abstract: | From the signal frequency real-time measurement of the application requirements,a method of fast Fourier transformation frequency algorithm is introduced.To rapidly proceed signal acquisition and computation,a kind of the date a cquisition system is designed based on FPGA,DSP hardware and new AD chip.This system uses programmable logic devices FPGA to connect the functional modules,which completes the control of the A/D chip and dual-port RAM.The block diagram of the system hardware and the flow chart of the algorithm are given.The design scheme of the system for the main functional modules is described.The simulation shows that the algorithm is reasonable and feasible with the featares of simplicity,fast speed and high precision. |
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| Keywords: | Fourier transformation frequency FPGA |
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