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ID:8788340
大小:435.50 KB
页数:8页
时间:2018-04-07
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1、TheDesignofVirtualFunctionwaveformGeneratorAbstract—Inthispaper,aVirtualFunctionSignalGeneratorisdesignedBasedonLabview.Howtodesignthegeneratorisintroducedindetail.TheVirtualFunctionSignalGeneratorcangeneratebasicwavesuchasSinewave,formulawave,whitenoiseetc.Thegenera
2、torhasfunctionslikewaveshowinganddatesavinginaddition.Keywords-VirtualInstrument;Labview;FunctionSignalGeneratorI.INTRODUCTIONThefunctionsignalgeneratorisappliedingreatmanyoffields.VirtualInstrumentisanewtypeofinstrumentwhichhasespecialfunctionsthatoldonedonothave.On
3、eVIincludesPC,hardwarewhichisparticularlydesignedandspecialsoftware.BeingagraphicalprogramminglanguageLabviewisusedfordategathering,instrumentcontrollinganddateanalyzing.HowtodesignvirtualfunctionsignalgeneratorbyLabviewisexplainedindetailinthefollowingpaper.II.TOTAL
4、DESIGNAccordingtotheprincipleoffunctionsignalgenerator,fourpartsweredesignedtocomposevirtualfunctionsignalgenerator.Thesefourpartsarepropertysetting,signalgenerating,waveshowinganddatesaving.A.PanelofGeneratorInthissystemthepanelaredividedtopropertysettingpanel(fig.1
5、)andtotalstructurepanel(fig.2).Mainoptionsinthefirstonearefrequency,amplitude,dutycycleandsamplesetc.aboutsignal.Thesepropertiescanbesetinthispanel.Totalstructurepaneljustincludesfourpartsthatwerepresentedaboveandsomeadditionalparts.Figure1.PropertySetPanelFigure2.To
6、talStructurePanelB.FunctionaboutInstrumentsTheVirtualFunctionSignalGeneratorcangeneratebasicwavessuchasSinewave,specialwaveslikeformulawaveandsomekindsofnoise.Signal’sfrequencycanberegulateddelicatelyorroughly.Propertycanberesetquicklyandbeusedassubprogramsometimes.M
7、oreoverhasthegeneratorfunctionslikewaveshowinganddatesavingetc.III.SOFTWAREABOUTVIRTUALFUNCTIONSIGNALGENERATORTheVirtualFunctionSignalGeneratorwasdesignedbaseonLabview7.0.Therearethreemoduleswhichcomposethissystem:moduleofpropertysetting,wavegenerating,waveshowingand
8、saving.A.ModuleofPropertySettingFrequencysettingandpropertyresettingaretwoimportantpartsofthismodule.Howtochangefrequencyvaluemulti
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