产品进行压气机管道声模态及不稳定特性测量

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1NIDataAcquisitionAndAnalysisOnTheSoundModeandTheRotationInsteabilityMeasurementInTheTransonicCompressorRigByMakingUseOfTheProductsOfNICorporationFFTNIGPIBNIPCI6071ELabWindows/CVINIB&K3560PULSEGPIBNIPCI6071ELabWindows/CVI116112ϖ2∑+∞−∞==nimemApθωθω),(),(2,1,0±±=m),(θωp∫−=πθθθωπω20),(21),(depmAim→FFT→FFT/3(163252KHz60FFT4I(B&K3560PULSE)GPIBB&K3560164164B&K3560GPIBII5IININIPCI6071E12A/D1.25M/s32DMA64360*(1.25*2)MB/*2=300MBLabWindows/CVIDataAcquisitionLibraryDAQ200264DoubleBufferRTSIBusThinker2002LabWindows/CVIAdvancedAnalysisLibrary64FFTPCI6071EFFTFFT2DAQ200242DAQ20023/34Thinker200254Thinker200255Thinker200266667715000/148815000/176492518Hz792518Hz723712NIPCI6071E3LabWindows/CVIDataAcquisitionLibraryAdvancedAnalysisLibrary

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