外文翻译----虚拟函数波形发生器的设计

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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