虛擬函數(shù)波形發(fā)生器中英文資料外文翻譯文獻(xiàn)TheDesignofVirtualFunctionwaveformGeneratorAbstract—Inthispaper,aVirtualFunctionSignalGeneratorisdesignedBasedonLabview.Howtodesignthegeneratorisintroducedindetail.TheVirtualFunctionSignalGeneratorcangeneratebasicwavesuchasSinewave,formulawave,whitenoiseetc.Thegeneratorhasfunctionslikewaveshowinganddatesavinginaddition.Keywords-VirtualInstrument;Labview;FunctionSignalGeneratorI.INTRODUCTIONThefunctionsignalgeneratorisappliedingreatmanyoffields.VirtualInstrumentisanewtypeofinstrumentwhichhasespecialfunctionsthatoldonedonothave.OneVIincludesPC,hardwarewhichisparticularlydesignedandspecialsoftware.BeingagraphicalprogramminglanguageLabviewisusedfordategathering,instrumentcontrollinganddateanalyzing.HowtodesignvirtualfunctionsignalgeneratorbyLabviewisexplainedindetailinthefollowingpaper.II.TOTALDESIGNAccordingtotheprincipleoffunctionsignalgenerator,fourpartsweredesignedtocomposevirtualfunctionsignalgenerator.Thesefourpartsarepropertysetting,signalgenerating,waveshowinganddatesaving.A.PanelofGeneratorInthissystemthepanelaredividedtopropertysettingpanel(fig.1)andtotalstructurepanel(fig.2).Mainoptionsinthefirstonearefrequency,amplitude,dutycycleandsamplesetc.aboutsignal.Thesepropertiescanbesetinthispanel.Totalstructurepaneljustincludesfourpartsthatwerepresentedaboveandsomeadditionalparts.B.FunctionaboutInstrumentsTheVirtualFunctionSignalGeneratorcangeneratebasicwavessuchasSinewave,specialwaveslikeformulawaveandsomekindsofnoise.Signal’sfrequencycanberegulateddelicatelyorroughly.Propertycanberesetquicklyandbeusedassubprogramsometimes.Moreoverhasthegeneratorfunctionslikewaveshowinganddatesavingetc.III.SOFTWAREABOUTVIRTUALFUNCTIONSIGNALGENERATORTheVirtualFunctionSignalGeneratorwasdesignedbaseonLabview7.0.Therearethreemoduleswhichcomposethissystem:moduleofpropertysetting,wavegenerating,waveshowingandsaving.A.ModuleofPropertySettingFrequencysettingandpropertyresettingaretwoimportantpartsofthismodule.Howtochangefrequencyvaluemultiplyisexplainedinfig.3.NodeSelecttingisappliedrepeatedlyandskillfullysothatdatacanbeinputinmanychannels.Thenselectdatabyswitchbutton.Sofrequencycontrollingcanbedesignedasrealinstrument.Howtoresetpropertyquicklyisexplainedinfig.4.B.ModuleofWaveGeneratingThismoduleisthecoreoftheVirtualFunctionSignalGenerator.StructureCASEisusedinthiswork.Byspecialnodemanytypesofwavescanbegenerated.Forexample,howtogeneratesinewaveisexplainedinfig.5.Theotheronescanbegeneratedinsimilarway.C.ModuleofWaveShowingandSavingInfactthismoduleisacompositeonewhichincludemanyfunctionsasoperating,applying,debugging,showingetc.Becauseoflotsofactswouldbeoperatedthoughthisinterface,thisinterfacemustbenotonlypracticalbutalsonice.Fig.6justexplainedhowtosolvetheseproblems.IV.CONCLUSIONBeinggraphicallanguage,Labviewisverystrongandeasytooltomakesystemofmeasureandtest.VirtualFunctionSignalGeneratorbasedonLabviewhasadvantagessuchashavingfriendlyinterface,operatingeasilyetc.Itcangeneratemanytypesoffunctionsignalswhichhavebigrangeofvalueoffrequencyanditsoutputdatascanbesaved.Soitcanbeappliedwidely.摘要在本次設(shè)計(jì)中,虛函數(shù)信號(hào)發(fā)生器是基于相位差來(lái)設(shè)計(jì)的。文中詳細(xì)地介,方波,白噪聲等。除此之外，這個(gè)函數(shù)信號(hào)發(fā)生器還有波形顯示和數(shù)據(jù)存儲(chǔ)功能。關(guān)鍵詞虛擬儀器；圖形化編程軟件；函數(shù)信號(hào)發(fā)生器一虛擬函數(shù)波形發(fā)生器的介紹函數(shù)信號(hào)發(fā)生器是應(yīng)用于很多領(lǐng)域。虛擬儀器是一種新型的具有特殊功能的儀器。虛擬函數(shù)信號(hào)發(fā)生器的設(shè)計(jì)包括詳細(xì)的計(jì)算機(jī)硬件設(shè)計(jì)和特殊的軟件設(shè)析數(shù)據(jù)的。以下將會(huì)詳細(xì)介紹如何利用虛擬儀器來(lái)設(shè)計(jì)虛擬函數(shù)信號(hào)發(fā)生器。二系統(tǒng)設(shè)計(jì)根據(jù)函數(shù)信號(hào)發(fā)生器的工作原理,虛擬函數(shù)信號(hào)發(fā)生器是由四個(gè)部分來(lái)構(gòu)成的。這四個(gè)部分包括屬性設(shè)定、信號(hào)產(chǎn)生、波形顯示和數(shù)據(jù)存儲(chǔ)。1.硬件系統(tǒng)設(shè)計(jì)在本系統(tǒng)中，硬件面板分為屬性設(shè)定面板（圖1）和信息管理總體結(jié)構(gòu)面板(圖2)。第一部分屬性設(shè)定主要包括輸出信號(hào)的頻率、幅值和取樣等。這些屬性分和一些外部設(shè)備組成。圖1圖22.儀器的功能虛擬函數(shù)信號(hào)發(fā)生器能產(chǎn)生基本波如正弦波、方波和噪音一樣的特殊波形。器。另外發(fā)生器還有波形顯示和數(shù)據(jù)存儲(chǔ)功能。三軟件設(shè)計(jì)虛擬函數(shù)信號(hào)發(fā)生器的設(shè)計(jì)基于LabView7.0的基礎(chǔ)。其中有3個(gè)模塊組成這個(gè)系統(tǒng)：屬性的設(shè)置，波浪發(fā)電，波浪模塊顯示和保存。1.屬性設(shè)計(jì)模塊頻率設(shè)定和屬性重置是此模塊的兩個(gè)重要組成部分。圖3解析了如何改變頻4解析了如何迅速重置設(shè)置。圖3圖42.產(chǎn)生波形模塊波形產(chǎn)生模塊是虛擬函數(shù)信號(hào)發(fā)生器的核心。結(jié)構(gòu)就是用于完成這項(xiàng)工作。通過(guò)特殊的節(jié)點(diǎn)可以產(chǎn)生多種波形。例如，如何產(chǎn)生正弦波，圖5做出了解析。其它的波形通過(guò)類(lèi)似的方式產(chǎn)生。圖53、波