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1、用LabVIEW模拟锁相环毕业设计(论文)中文摘要用LabVIEW模拟锁相环摘要：锁相电路是相位锁定环(Phase-Locked Loop)的简称，主要由鉴相器、环路滤波、压控振荡器成 。主要是要掌握LabVIEW图形化编程特点，因为是软件来实现电路，就必须根据实际电路的功能，把它抽象为相应的逻辑来实现，因此需要既要彻底地掌握锁相环的理论知识，又要具备很强的虚拟仪器应用能力。充分调动积极思考，独立解决问题的能力。利用LabVIEW来实现锁相电路，主要是要掌握LabVIEW图形化编程特点，因为是用软件来实现电路，就必须根据实际电路的功能，把它抽象为相应的逻辑来实现，又因 LabVIEW
2、的程序可以嵌套，所以在实现时可将其各个功能分别实现，然后以调用子程序的方式把它们组和在一起，因此设计时需要设计出一个大的框图，大的框图由多个子框图构成。虚拟锁相电路由时钟发生器、分频器、时钟及数据鉴相器、压控震荡器、移位寄存器这几个功能模块组成。关键词：锁相环鉴相器压控振荡器自动跟踪毕业设计(论文)外文摘要Title:Simulatesthephase-lockedloopwithLabVIEWAbstract:Thephaselockingcircuitisthephaselockinglink(Phase-LockedLoop)theabbreviation,mainlybyth
3、ediscriminator,theringcircuitfilter,thepressurecontrolstheoscillatortobecome.MainlyismustgrasptheLabVIEWpresenteinfiguresanddiagramsprogrammingcharacteristic,becauseisthesoftwarerealizestheelectriccircuit,mustactaccordingtotheactualelectriccircuitthefunction,abstractsitforthecorrespondinglogicr
4、ealizes,thereforeneedsbothtohavetograspthephase-lockedloopthoroughlythetheoryknowledge,andmusthavetheverystronghypothesizedinstrumentapplicationability.Thefullreassignmentpositiveponder,theindependencesolvesthequestionability.RealizesthephaselockingcircuitusingLabVIEW,mainlyismustgrasptheLabVIE
5、Wpresenteinfiguresanddiagramsprogrammingcharacteristic,becauseisrealizestheelectriccircuitwiththesoftware,mustactaccordingtotheactualelectriccircuitthefunction,abstractsitforthecorrespondinglogicrealizes,andfurtherbecausetheLabVIEWproceduremaythenesting,thereforeinrealizationtimemayrealizesepar
6、atelyitseachfunction,thentransfersthesubroutinethewaytheirgroupandinthesameplace,thereforedesignstimeneedstodesignabigdiagram,thebigdiagramconstitutesbymanysub-diagrams.Thehypothesizedphaselockingcircuitbytheclockgenerator,thefrequencydivider,theclockandthedatadiscriminator,thepressurecontrolst
7、heoscillator,theshiftregisterthesefunctionmoduleiscomposed.keywords:phase-lockedloopdatadiscriminatorpressurecontrolstheoscillatorautomatictrackin目录1引言1.1LabVIEW概述1.2LabVIEW工作环境1.2.1LABVIEW的工作窗口1.2.2LabVIEW的操作模块1.2.3虚拟仪器程序（VI）的基本组
