| 基于DFT算法的单相数字锁相环 |
| |
| 引用本文： | 赵文才,范声芳,熊健,张凯. 基于DFT算法的单相数字锁相环[J]. 电力电子技术, 2011, 45(4): 79-81 |
| |
| 作者姓名： | 赵文才 范声芳 熊健 张凯 |
| |
| 作者单位： | 华中科技大学电气学院; |
| |
| 摘 要： | 离散傅里叶变换(DFT)算法可以方便提取信号的幅值和相位,通过仿真和理论推导,深入分析基于傅里叶变换(FFT)的锁相环,并研究了其数字实现方法,即基于DFT算法的锁相环.此锁相方式在同步信号中有谐波或多个过零点时仍能正常工作,有较高的精度.仿真和实验结果证明该技术是可靠可行的.
|
| 关 键 词： | 数字锁相环 变采样频率 同步采样 |
Single-phase Digital Phase-locked Loop Based on DFT |
| |
| ZHAO Wen-cai,FAN Sheng-fang,XIONG Jian,ZHANG Kai. Single-phase Digital Phase-locked Loop Based on DFT[J]. Power Electronics, 2011, 45(4): 79-81 |
| |
| Authors: | ZHAO Wen-cai FAN Sheng-fang XIONG Jian ZHANG Kai |
| |
| Affiliation: | ZHAO Wen-cai,FAN Sheng-fang,XIONG Jian,ZHANG Kai (Huazhong University of Science and Technology,Wuhan 430074,China) |
| |
| Abstract: | DFT algorithm can easily extract amplitude and phase of the signal.This paper analyzes the phase-locked loop based on FFT through simulation and theoretical analysis,and discusses the digital implementation of it.This method can work reliably even when the synchronization signal has harmonics or multi-zero-crossing,and it also has high precision.Simulation and experimental results validate its feasibility. |
| |
| Keywords: | digital phase-locked loop variable sample rate synchronization sample |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
