首页 | 本学科首页   官方微博 | 高级检索  
     

一种基于多过零鉴相器的数字锁相环
引用本文:戴永辉,洪巧文,蔡逢煌,王武.一种基于多过零鉴相器的数字锁相环[J].电源学报,2012,10(5):58-62.
作者姓名:戴永辉  洪巧文  蔡逢煌  王武
作者单位:福州大学电气工程与自动化学院,福州大学电气工程与自动化学院,福州大学电气工程与自动化学院,福州大学电气工程与自动化学院
摘    要:采用传统过零鉴相器的数字锁相环(DPLL)实现简单,当同步信号受干扰时会存在多个过零点,将导致鉴相失败。为解决这一问题,提出了多过零鉴相器:可以统计一个周期内的多个捕获周期值,结合同步信号采样,准确定位过零点,进而计算出相位差。随后,介绍了采用模糊PI控制的数字锁相环的软件实现流程。通过实验验证了该方法的可行性。

关 键 词:数字锁相环  多过零鉴相器  模糊PI
收稿时间:2012/7/14 0:00:00
修稿时间:2012/7/24 0:00:00

A DPLL Based on Multi-zero-crossing Phase Detector
DAI Yong-hui,HONG Qiao-wen,CAI Feng-huang and WANG Wu.A DPLL Based on Multi-zero-crossing Phase Detector[J].Journal of power supply,2012,10(5):58-62.
Authors:DAI Yong-hui  HONG Qiao-wen  CAI Feng-huang and WANG Wu
Affiliation:College of Electrical Engineering and Automation, Fuzhou University,College of Electrical Engineering and Automation, Fuzhou University,College of Electrical Engineering and Automation, Fuzhou University,College of Electrical Engineering and Automation, Fuzhou University
Abstract:Although the digital phase-locked loop (DPLL) with traditional zero-crossing phase detector can be implemented conveniently, it becomes inability when the synchronization signal with interference would produce multi-zero-crossing results. To solve the problem, a multi-zero-crossing phase detector was proposed: the phase detector can get all capture values during one cycle and accurately locate the zero-crossing position of current with the sampling values of synchronization signal. Thus the phase error can be calculated. The software implementation of DPLL based on fuzzy PI controlling was proposed then. Finally, the feasibility was validated by experiments.
Keywords:DPLL  multi-zero-crossing phase detector  fuzzy PI
本文献已被 CNKI 等数据库收录!
点击此处可从《电源学报》浏览原始摘要信息
点击此处可从《电源学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号