基于LabVIEW的软件数字锁相环实现  

Design of Softwareand Digital Phase-locked Loop Based on LabVIEW

作　　者：孙秀桂[1] 张洪斌 张树朝[1] 

机构地区：[1]大理学院,大理671003 [2]大理供电局,大理671001

出　　处：《科学技术与工程》2010年第1期76-80,共5页Science Technology and Engineering

基　　金：云南省教育厅自然科学基金(08Y0333)资助

摘　　要：锁相环在测控、数字信号处理等领域有着广泛的应用。软件锁相环成为锁相环发展的趋势之一,根据锁相环路的基本组成及原理,利用LabVIEW软件提供的强大的数值计算和信号分析等能力对软件数字锁相环进行设计。实验和仿真结果表明该软件锁相环具有较好的捕获和跟踪性能。利用软件实现的锁相环比硬件锁相环具有更好的灵活性和通用性,同时具有结构简单、参数设计灵活等优点。Phase-locked loop（PLL） has broad application in the field of measurement and control,digital signal processing. The software PLL has became a trend of the development of PLL. With a great capacity of digital computing and signal analysis,a software and digital PLL is designed based on the basic principles and composition. Experimental and simulation results show that the software PLL has better performance of capture and tracking. The PLL designed by software has a higher flexibility and versatility than that by hardware, at the same time it has the advantages of simple in structure and flexible design parameters and etc.

关 键 词：软件锁相环 LABVIEW 鉴相器 子VI 

分 类 号：TN911.9[电子电信—通信与信息系统]