| 基于ARM7的高效FFT算法在电能质量监测中的应用 |
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| 引用本文： | 黄俊彦,刘永强.基于ARM7的高效FFT算法在电能质量监测中的应用[J].微计算机应用,2011,32(4):71-75. |
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| 作者姓名： | 黄俊彦 刘永强 |
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| 作者单位： | 1. 华南理工大学电力学院,广州,510640
2. 华南理工大学电力学院,广州,510640;广东省绿色能源技术重点实验室,广州,510640 |
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| 基金项目： | 广东省绿色能源技术重点实验室资助 |
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| 摘 要： | 探讨了32位ARM处理器的数字信号处理能力,利用ARM7TDMI内核的特点,用汇编语言设计了按时域抽取(D IT)的基4-FFT高效算法,以及讨论了在ARM内核中实现定点运算的方法。实验结果表明,经过充分优化后的基-4FFT程序代码执行效率很高,能够胜任电能质量监测中的谐波分析能力。因此,在电能质量监测系统中采用单核ARM处理器,代替传统的DSP+MCU双核结构,能够有效地降低设备功耗和成本。
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| 关 键 词： | ARM7TDMI 基-4FFT 定点运算 ARM汇编 谐波分析 |
High- efficient FFT for Power Quality Monitoring Based on ARM7 |
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| HUANG Junyan,LIU Yongqiang.High- efficient FFT for Power Quality Monitoring Based on ARM7[J].Microcomputer Applications,2011,32(4):71-75. |
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| Authors: | HUANG Junyan LIU Yongqiang |
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| Affiliation: | HUANG Junyan1,LIU Yongqiang1,2(1.School of Electrical Engineering,South China University of Technology,Guangzhou.China,510640 2.Guangdong key laboratory of Clean energy technology,Guangzhou China,510640) |
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| Abstract: | According to discuss the ability of digital signal processing with 32-bit ARM processor.This thesis designed a Radix-4FFT algorithm which Decimated in time(DIT),and fully optimized in the assembly code.The algorithm also contains the method of fix point arithmetic for ARM kernel.The test result showed that the Radix-4FFT which fully optimized have executed efficiently,and can be competence for the harmonic analysis of power quality monitoring system.Therefor,it can reduce the cost and power dissipation by u... |
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| Keywords: | ARM7TDMI |
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