基于Labview的聲卡信號采集及其分析系統(tǒng)設(shè)計(完整版)doc資料

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]LabVIEW,,:,PCLabVIEW波示、域字波、存儲、域從而實現(xiàn)道實時。邏清晰,以有防止波真誤差小起了好障診作應(yīng)中實強關(guān)鍵詞:LabVIEW;時;域中:TP311.52;TP274+.2文獻(xiàn)標(biāo)碼:A文章andanalysisofgysignalLabVIEWDOUXiu-peng,YOUChuan-fu,OUYANGGuo-xin(SchoolofElectricElectricityUniversityofTechnology130012,ChinaAbstract:Accordingofthesignalofgyroscopemotors,anumberofcomplexthedetectedbydataacquisitionthemustbepreciseofthegyroscopemotorvibrationsuchacquisition,waveformdisplayanalysis,digitalfiltering,datafrequency-domainsoweretovirtualwithgraphicalprogammingsoftwareLabVIEWPCtorealizethe-signalacquisition-timeofvibrationsignal.Thediagramsofthissystemclearwaveformdistortionbeeffectivelyprevented,andtheerrorbe,thiscanveryimportantinthefaultdiagnosisandhasveryonKeywords:LabVIEW;Virtualinstrumentanalysisdomainanalysis(1982-,,,,1引隨著學(xué)的斷發(fā)展,們對慣性導(dǎo)系統(tǒng)的陀螺要求來越。陀螺達(dá)是螺儀心臟,使陀螺精高必須保陀螺達(dá)在工過程中正工,量減少規(guī)則振和噪。轉(zhuǎn)要保持度的態(tài)平除此外,達(dá)軸在高旋轉(zhuǎn)也產(chǎn)振,子高旋轉(zhuǎn)起風(fēng)和由引起的聲會誘導(dǎo)子轉(zhuǎn)。而往往沒在械本體電包含大量聲[這在度中,,還振陀螺因質(zhì)心偏質(zhì),,,

NILabVIEW端,他鍵都視軟板上完操作單[2],遠(yuǎn)[3]2設(shè)如圖所,信經(jīng)號調(diào)采集卡遞到控制,如下第卷第22021卡卡般、模、利用LabVIEW件開發(fā)出具有形象按鈕的前面板利用其強的圖形化編程功能,以實現(xiàn)各種顯示和處理功能。虛擬儀器的實質(zhì)是利用計算機顯示器的顯示功能來模擬傳儀器的控制板,多種形式表達(dá)輸出檢測結(jié)[4]只要對機面板上的鈕進(jìn)操就能成監(jiān)測診斷務(wù)。3采用采樣式行集信過采樣技術(shù)就指高于奈奎斯采頻率頻率對模擬信進(jìn)行采樣的技。采樣法提分辨率信比的十分效的方法[3],與分辨率ADC相的信噪比[4]過樣對化聲功率起平作用[定由量化噪聲引起的固定噪聲功率,以算增加效分辨率所需要的采樣比。(1確定有效樣率:大于2Ωn的有采樣率ΩS,M,2π=ΩSmin成,T能方的計采樣的選擇M實采樣頻率Ωs=MΩSmin=2π/T,M大。加辨率6dB的噪需要以4的采頻率行過采[6](2采樣擇對號是采集1024。出采等但要的冪快傅(FFT,算起來比方(3多周期的均:在據(jù)集下利量號頻以多期號行然后平頻率測量值。假設(shè)采樣頻率為,共采集個周信號用數(shù)方找各周樣個,別為2,Nm,那么對應(yīng)各周期頻率值別為F/N1,F/N2,F/Nm,考慮個周的率值2+1/N/m?？梢钥?的率實上在個周期范圍的權(quán)均。般況該數(shù)法頻誤小1%[7].4系統(tǒng)件計LabVIEW一種圖形化編程環(huán)采用它發(fā)陀馬達(dá)振動信號數(shù)據(jù)集能夠充分地利用圖形化程語的優(yōu)勢,過對數(shù)據(jù)集卡的始化設(shè)置和數(shù)據(jù)采程序設(shè)計,可方便地構(gòu)建數(shù)據(jù)采系統(tǒng)。本系統(tǒng)是根

儀器公司最新虛擬軟件版本進(jìn)行設(shè)計。系統(tǒng)件構(gòu)設(shè)計流程如圖示其功能包號信號、波形示頻譜分析、形儲與回放。LabVIEW過函數(shù)庫或是控件的形式提供了大量的用于號處理的函,濾波器數(shù)、窗函數(shù)、信號發(fā)生函數(shù)、時域函數(shù)和頻域函數(shù)5個子函數(shù)庫。系統(tǒng)必須濾出信號中高頻成分,用低通濾波方式在實際應(yīng)中可以調(diào)用上述函數(shù)來實現(xiàn)各種信號處理功能。頻譜分析是振動信號處理的最重要的一種分析方法。對于頻譜分析,以進(jìn)行濾波窗口選擇。頻譜分析可以選擇傅里葉譜、功率譜包括自功率譜、互功率譜頻率響應(yīng)函數(shù)以及相位譜等。功率譜和頻譜用波形圖PC(DFT,,(FFT,FFT([8]3LabVIEW某竇修等:于LabVIEW與65年中國系統(tǒng)中卡(DAQ集馬處理將記定儲件,徑據(jù)由設(shè)定LabVIEW中有伸縮件處工完成據(jù)讀寫據(jù),成據(jù)與回放,LabVIEW5、處理分析由此知作,果作則能分清由質(zhì)心原因他原因,調(diào)取標(biāo)存比較由屬保密器只能室內(nèi)擬防真,定限LabVIEW大形化編輯高先分析處理系際中狀態(tài)良好通過防真得改善度虛擬儀器術(shù)式把硬、PC技術(shù)到開周短、效、價比、維參考獻(xiàn)[1]余.微弱字處理技術(shù)分析仿[中國機,[2]董.LabVIEW虛示波與[J].青島大學(xué),2002,17(3:59-60.機械出版社,[4]王萍利過樣法A/D分率比[儀器儀學(xué),2002,23(3:1-2.[5].LabVIEW[J].,2003,23(3:139-141.[6].[M].:[7].高ADC分辨率插濾波方[J].電,[8]張,華.字信號處[M].:業(yè)[9]戴,開,芳,測試LabVIEW[M].:電子業(yè),2020.改善[J].信,2000,16(4:344-348.設(shè)[J].國測試技,2020,33(2:.2021rnalofHofineeringne