Sound & Noise Vibration Analysis

Hi
We are testing a machine " Hypoid Gear Tester" basically for Acceptance or Rejection of Gear Production. We are testing PC base Labview software for this. We are using Microphone & Accelerometer for Analysis. The Enviroment is noisy 1) How to determine and elliminate this external noise 2) We need to generate a Graph or report as the attached file. I appreciate your help Thanks
Attachments:
Picture 022.jpg ‏595 KB

The order analysis tools and the sound and vibration tools provide the fundamental signal analysis for most all machinery vibration functions.   However, the application level such as hammer blow test (modal), balancing, and so forth are not complete solutions. 
I recommend looking at the following solution, which is based on these tools and comes with a turn-key application solution....
www.vibdaq.com
Let us know what further questions you have.
Preston Johnson
Principal Sales Engineer
Condition Monitoring Systems
Vibration Analyst III - www.vibinst.org, www.mobiusinstitute.com
National Instruments
[email protected]
www.ni.com/mcm
www.ni.com/soundandvibration
www.ni.com/biganalogdata
512-683-5444

Similar Messages

  • Repeatable Reading variation in Noise & Vibration Analysies

    We are testing the Quality of the gears based on the noise and vibration produced when the bevel and the pinion gears mesh each other. We Using SV DAQ NI PCI-447 and connected accelerometer and microphone for 1st and 4th channel respectively. We are following signal harmonics method for the testing purpose. First, we acquire the data signals of both noise and vibration and process them by the same above method and judge wheatear the gear has some defects or not. (Based on the threshold values) The problem is, each time when we run the machine, the noise and vibration signals which we acquire will be different due to this final results (Harmonic values) are also changing. We need some filters or any other solution so that we acquire noise and vibration only for gear mesh. I uploaded a picture showing how we doing the test process for sound.
    Attachments:
    harmonic.png ‏35 KB

    If you are only concerned about peaks within a certain frequency range, you should adjust the Search Range in the settings of the Peak Search Express VI (on the Configuration tab).  That will tell the express VI to only return the peaks in the frequency range that you choose.
    To clean up your results, you may want to try some FFT averaging.  This might help if your peaks are jumping around a little bit due to a low peak threshold that might be picking up some noise.
    If you really would like to do some filtering, you could use a highpass filter to get rid of any low order (1x/2x/3x, etc) vibration that you might not care about.  From your picture, it looks like you have the Sound & Vibration Measurment Suite and you are comfortable using express VIs.  So, you could use the filter express VI from the palette here:  Sound and Vibration>>S&V Express Measurements>>Processing>>Filter.

  • Sound and vibration Toolkit 7.1 on Labview 8.0

    Hello!
    I kind of expect the answer is to cash out for a toolbox upgrade, but nevertheless I will ask the very logical question:
    When I have an old Sound and Vibration Toolbox, how can I use it on a newer LabView Installation?
    I could install, but when opening some of the example VI(SVXMPL_Averaged Frequency Response (DAQmx).vi), they do not work. The sub-VI's (e.g. svx_ClearAO_ClearAI (DAQmx).vi) have broken connections and even a mass compile didn't help. After the mass compile I have a long log of errors. So has anyone been successful in doing this without buying the newer version of the toolbox?

    Hi
    Let me double check the version of Sound and Vibration toolkit you installed
    as the latest Sound and Vibration toolkit is version 6.0.
    This information is in Measurement & Automation Explorer(MAX)
    if you go to MySystem >> Software >> LabVIEW >> Sound and Vibration Analysis VIs.
    As well as this, please let us know the version of your DAQmx driver.
    It sounds many DAQmx VIs are broken and your DAQmx might not be a compatible version of the toolkit.
    Regards,
    Ayumi

  • Noise, Vibration & Order Analysis

    Dear all,
    I am currently looking for a program that can perform a noise, vibration and order analysis. I was just made aware that LabVIEW (Developer Suite, if I'm not mistaken) comes with Noise and Vibration and Order toolkits. I've read through the data sheets for both toolkits. Now, I'm wondering whether the two mentioned toolkits can perform the analysis below:
    1. Vold-Kalman Order Tracking Filter
    2. Modal and Structural Analysis
    3. Noise Source Identification
    4. Modal Test Consultant
    5. Acoustic Test Consultant
    6. Real time CPB Analysis
    7. Rigid Balancing and Two-Plane Balancing Consultant
    8. Baseband FFT Analysis
    9. Signal Enhancement
    10. Auxiliary Parameter Logging
    11. Cepstrum Analysis, and
    12. Envelope Analysis
    These analysis modules can be performed by Bruel & Kjaer product. I'm trying to influence my superior that National Instrument can also achieve the same objectives. So, maybe the users out there, or NI technical experts can help me with this. If the two toolkits are insufficient to perform such tasks, but NI has other toolkits that can supplement, can you guys please mention it in your reply.
    Many thanks!
    Shazlan

    The order analysis tools and the sound and vibration tools provide the fundamental signal analysis for most all machinery vibration functions.   However, the application level such as hammer blow test (modal), balancing, and so forth are not complete solutions. 
    I recommend looking at the following solution, which is based on these tools and comes with a turn-key application solution....
    www.vibdaq.com
    Let us know what further questions you have.
    Preston Johnson
    Principal Sales Engineer
    Condition Monitoring Systems
    Vibration Analyst III - www.vibinst.org, www.mobiusinstitute.com
    National Instruments
    [email protected]
    www.ni.com/mcm
    www.ni.com/soundandvibration
    www.ni.com/biganalogdata
    512-683-5444

  • How can i use modal analysis in labview and Sound and Vibration toolset in my structural studies.

    I am working on structural analysis of buildings during earthqauke.I ahve NI 4472, labView, sound and vibration toolset.Now i also want to carry out Modal Analysis. Where can i find thisin NI software.

    There are third party software packages that support modal analysis. These include IDEAS from MTS, Smart Office from m+p, and ME Scope. You can use LabVIEW to save a file or export the data directly via Active-X. If you have some specific functions that you would like to see implemented in LabVIEW, drop a note to one of our developers, Hui Shao or myselfat : [email protected] on what you would like to see.
    Kurt Veggeberg, BDM Sound and Vibration.
    [email protected]

  • Sound and Vibration toolkit for vibration analysis

    Hi guys! I am new to Labview. I am trying to use Sound and Vibration toolkit to analyse the accelerometer signal mounted on a motor through myRio. The analysis are spectral map, order tracking, power spectrum, order spectrum etc. But nothing can be seen from the output graph. The only result I get is from vibration level.
    Attached is a screen shot of my vi and actual vi file. Am I doing it correctly? I really need your help guys....
    Thanks.
    Attachments:
    Vib.vi ‏384 KB

    SK,
    You have serious problems in your File.VI.  Why are your writing to your file and then reading it right back?  Worse, there is no guarantee that the File write will actually occur before the File Read.  You have a race condition set up there between those two Spreadsheet File VI's.
    If you want to maintain a history of whatever has already been written to the file, you should be building it into an array and storing in a shift register.  Even if your File.vi would by chance work the way you want it to, storing data in the file system is much slower than maintaining your data in memory.
    As for your while loop, it is going to run as fast as it can with respect to all the functions occurring inside of it.  Is it possible you are getting 14 iterations of that while loop for each frequency step that is occurring?
    Message Edited by Ravens Fan on 07-25-2009 01:35 AM

  • Rule of thumb for the number of averages in an FFT for vibration analysis?

    I'm doing vibration analysis on rotating machinery and would like to average the FFT to minimize variations of the data (rms averaging).  How does one choose the optimum number of averages? 
    Also, why is it necessary to specify the number of averages (for example, in the Spectral Measurements express VI) as well as telling the VI to restart averaging.  Would not the latter would be sufficient when the Spectral Measurements VI is enclosed in a loop?  Thanks.

    Thanks for your post. 
    In my experience 20 is a good number.  It really depends however on a number of factors. 
    1) does the frequency of the rotation of the machine (speed) change?  If so, averaging from an FFT would not work well.  I would use the Order Spectrum in the Sound and Vibration Measurement Suite if speed changes.
    2) are loads changing (and speed is constant or you are using order spectrum)?  If so you will want a smaller number of averages so you do not average out the effect of fast load changes.
    3) try a few numbers and note when the noise floor appears stable.  This may be the best method to choose the number. 
    4) how often do you want a result?  A smaller number of averages will produce an "averae complete" result more often. 
    Use the averages complete boolean to gate passing on the results (to the user interface, file, further analysis, etc.).  With restart averaging on, it will restart another averaging process and toggle the boolean (gate).
    Hope this helps. 
    Preston Johnson
    Principal Sales Engineer
    Condition Monitoring Systems
    Vibration Analyst III - www.vibinst.org, www.mobiusinstitute.com
    National Instruments
    [email protected]
    www.ni.com/mcm
    www.ni.com/soundandvibration
    www.ni.com/biganalogdata
    512-683-5444

  • Sound output with sound and vibration toolkit

    Hi!
    Wants to setup a system with two microphones that are connected to DAQ NI USB-9162 and perform a Frequency Response between them where one of them has the undisturbed signal (close in space) and the other the respons (further away). My problem is that I want to send out noise or multitone through labview to an amplifier with internal D/A connected to my USB (turns up as a soundcard in windows). I can not find this option to send out sound in the sound and vibration tool.
    Using evaluation version of both Labview and the sound and vibration kit since I wanted to see if it was possible to perform this application with Labview. Feels close but lack the success still.
    Best regards
    Fredrik

    Fredrik76 wrote:
    Ok so I have to use the Labview interface instead of the sound and vibration toolkits interface? I see the sound out option in Labview where my card apperas but not in the sound and vibration toolkits interface. Guess I have to add the options for the analysis manually then?
    It should be easy to do some modifications if you have some code doing what you want, but not with a sound card. If you have some code just post it. So I can take a look. Note that sound cards do not support all sample rates. But all sound card do support 44100 Hz as sample rate. And newer sound card also higher rates. And how good your setup will be. Will depend somehow on your sound card. But by all means give it a try  
    Besides which, my opinion is that Express VIs Carthage must be destroyed deleted
    (Sorry no Labview "brag list" so far)

  • Average multiple signals together in sound and vibration assistant

    Hello,
    I would like to average octave analysis data from multiple microphone channels together to obtain a single set of octave analysis data to view within Sound and Vibration Assistant (a surface average from the microphones).  I have created an octave averaging vi in LabVIEW to run in SVA, but I get the error that there are no signals in my SVA project to input into my vi.  I have based the input of my vi on code generated from SVA which outputed multichannel octave analysis data, so I don't quite understand why the output from an octave analysis in SVA doesn't match up to the input of my vi.
    I also would like to do this for multichannel power spectrum data, and I have tried creating my own vi for this as well with no success.
    I am using LabVIEW 2011 32-bit along with Sound and Vibration Assistant 2011.
    Any assistance with finding a solution to this problem would be greatly appreciated.
    Thank You,
    Eric Morgan
    Attachments:
    Octave Average.vi ‏13 KB
    Power Spectra Average.vi ‏13 KB

    Hello Jake,
    Thank you for responding to my post.  After recording the raw sound pressure data from my microphones, I placed an Octave Analysis step and a Power Spectrum analysis step in the playback section of SVA, and the outputs of these steps should have served as inputs to the VIs I created (I assume you only looked at the power spectrum averaging VI, as the octave averaging VI accepts a 1D array of clusters of center frequencies and band powers).  I did find that my averaging VIs did not have the correct size of empty array going into the second For loop, so I have corrected this in the attached VI (for averaging the FFT).
    Also, I was able to get my corrected VI for averaging the FFT to work after getting past a little quirk in SVA.  After browsing to my VI in setting up the "Run LabVIEW VI" step, I had to click the "Refresh VI" button before it would let me select a power spectrum as its input.
    I also think I figured out why the octave averaging VI doesn't work.  I think it has something to do with the fact that the output of an Octave Analysis step in SVA can not be used as an input to any other steps within SVA, which makes sense most of the time since once you have performed an octave analysis, there is really no other processing of this data that would ever need done...except for my case of averaging the 10 channels together to obtain the surface average SPL (kind of important when testing according to ISO3744).  If this is the case, I would consider this a bug in SVA, as any output from any step in SVA that can be displayed should be able to be used as an input to a "Run LabVIEW VI" step.
    I agree with you that in the end, it would be easier to do everything in just LabVIEW if I were just collecting data for post-processing at a later date, but when investigating noise issues and collecting mounds of data in the process, SignalExpress makes it a little easier to sift through that data as it is collected/logged while still in our sound lab, which may give us some ideas of different ways to test at that moment and possibly find the cause of our noise issues.
    Thanks again for responding to my post,
    Eric Morgan
    Attachments:
    AverageFFT.vi ‏19 KB

  • Sound and vibration colormap to measurement file

    Evening,
    Still pretty new to the both labview and the sound and vibration suite so probably a basic question on data types i cant get my head round.
    I want to the data from a colormap to a tdms file for future analysis but cat get the correct type of data for the measurement file function
    Essenstially i've used used the 3rd order function for a while when writing motor gearbox specifications, so not just sound pressure level but also type of noise (eg happy baby at 60dB vs screaming baby at 60dB)
    I want to go a step further and see how these values change over short periods of time hence colormap but cant seem to be able to record the data.
    I've attached a very basic vi of what i want to do and left the 'bad data type wire' in to show what i want to achive.  i've searched extensively all the normal places but been unable to find any discussions or examples close.
    Any help would be greatfully
    Received
    Martin
    Attachments:
    Sound Map_v002.vi ‏146 KB

    Hello Mjm1968,
    When you hover over the broken wire with Context Help on (Ctrl-H), you can see that it's a bundle of multiple data types.  Right click on the broken wire, and you can go to Cluster, Class, & Variant Palatte » Unbundle By Name.  Attach the left side of that node to the wire, and you can break out all of the components of the signal, which you can feed to a Build Array node (as necessary), and then into a Write to Measurement File VI.  If that slows down your loop too much, we can look into some other options, but that may be the simplest solution to writing to a TDMS file.
    Chris H
    Applications Engineer
    National Instruments

  • How to install sound and vibration toolkit 8.5

    Hello all, I have just started using labview and would like to run the "SVXMPL_Third Octave Analysis for Multiprocesor" example as an example for multithread programming, but I run into the issue that the "Sound and Vibration" toolkit is required before running the example.  I have installed the labview 8.5. I have gone through the posed link and gone through  the list of products installed in my machine (ControlPanel>Add and Remove Programs> National Instruments Software), but I couldn't find the "sound and vibration toolkit". I have tried to run the installation setup in order to add the toolkit. it looks like I have already installed all the available software. I don't know how I should install the toolkit.  I appreciate on any comments on how to install the toolkit.   I appreciate if you can help me on how to install "sound and vibration toolkit" in my machine.  

    Never mind.  I got it.

  • Third octave operations with "sound and vibration toolkit"

    Hi!
    I’m working about third octave decomposition with a vibration signal.
    I’m using the sound and vibration toolkit.
    The sample frequency of my signal is 2400 Hz.
    And I’m working with a 1 second vibration signal (so 2400 points).
    Fs = 2400
    N = 2400
    I need to understand the different and successive operations that the “SVT Fractional-octave Analysis [IEC].vi”VI do.
    In fact, I think that my frequency resolution (df = Fe/N=1Hz) is too low.
    Do you have a solution?
    Maybe I could turn into my 1 sec signal in 10 sec signal with 10 recopies and assemblage of my previous signal?
    N’ = 10N so df = Fe/10N = 0.1Hz.
    Thanks for your help.
    Bastien of paris

    Hello,
    The first thing you have to do is to read the Chapter 7 of the user manual of the Sound and Vibration Toolset.
    You can find it in : program -> National Instruments -> LabVIEW Sound and Vibration Toolset -> User Manual
    This chapter discusses fractional-octave analysis, including fractional-octave analysis theory, averaging modes supported by the
    Octave Analysis VIs, settling time, and ANSI and IEC standards.
    regards,
    Marc L.
    NIF

  • Need help with FFT for Vibration Analysis

    Hello all,
    I am acquiring data into LabVIEW from an accelerometer. The acceleration (in g's as determined within MAX) time domain graph works fine. However, I wish to do analysis using an FFT spectrum. All my attemps at wiring my time domain acceleration data into various FFT.vi's have resulted in blank graphs, including the sound and vibration module VI's. I am accquiring at 2000Hz. Obviously I am doing something wrong. Can anybody shed some light on how I can get a successful FFT working?
    Kind Regards
    Adam

    I attached an example that works well for me - gens a signal, converts to waveform data type, does FFT
    Preston Johnson
    Principal Sales Engineer
    Condition Monitoring Systems
    Vibration Analyst III - www.vibinst.org, www.mobiusinstitute.com
    National Instruments
    [email protected]
    www.ni.com/mcm
    www.ni.com/soundandvibration
    www.ni.com/biganalogdata
    512-683-5444
    Attachments:
    Generate Signal and SV FFT.vi ‏20 KB
    gen sig and fft.JPG ‏32 KB
    gen sig and fft.JPG ‏32 KB

  • Application notes, related software On Measurement of sound and its analysis

    Please send me Application notes, related software On Measurement of sound and its analysis.
    Also send me list of the hardware and software required for sound measurement and analysis.

    The software you are looking for would be LabVIEW with the Sound and Vibration Toolkit. With that you will not only get the tools you need, but a good deal of example programs to help you along the way.
    From a hardware point of view, our Dynamic Signal Analysers are perfectly suited for sound and vibrational measurements. We also have a large line of Data Acquisition devices that are also well suited for these types of measurements.
    Here are some links that may help:
    Products:
    http://sine.ni.com/apps/we/nioc.vp?cid=1382〈=US
    http://sine.ni.com/apps/we/nioc.vp?lang=US&pc=mn&cid=3122
    http://sine.ni.com/apps/we/nioc.vp?cid=3472〈=US
    App. Notes:
    http://zone.ni.com/devzone/conceptd.nsf/webmain/CE46CCEDEBE745FA86256CC3007F9C06?opend
    ocument&node=10521_US
    http://zone.ni.com/devzone/conceptd.nsf/webmain/7023E833D245AD3386256D0A004D44C3?opendocument&node=10521_US
    Sound and Vibration Toolkit User Manual:
    http://digital.ni.com/manuals.nsf/websearch/B785E3CEABEB742486256E6D006845B8?OpenDocument&node=3122_US
    I hope this helps you out.
    Best Regards,
    Jeremy R.
    NI - Applications Engineer

  • Sound and vibration toolkit using Keithley Card

    Hello everyone,
    Might be doing a project soon using the LABVIEW Sound and Vibration Toolkit(1/n octave vibration analysis required) with LABVIEW 6.1(Sorry, try convince my Boss to upgrade). We have a Keithley KPCI-3101 card avaliable to us for the analog input.
    Do any of you forsee a problem using a non-NI card with the sound and vibration toolkit? I can find very little on the internet discussing using non-NI cards with the toolkit.
    This might sound like a stupid question but I need to be
    100% sure that there are no problems.
    Thank you for any help you can offer :-)
    Cheers
    Jurgen

    Hello Jurgen,
    Of course the integration with National Instruments boards (PCI-4472 or 445x boards) is best suited with the Sound and Vibration Toolkit. However it is possible to use the toolkit without National Instruments hardware. Most of the examples that ship with the toolkit use NI-DAQ data acquisition calls. You need to remove them from the examples and substitute them for the driver vi's that your board uses. There are also a couple of examples that use simulated signals (so there is no hardware at all involved).
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    s timing information), so you need to convert your array of data to this datatype, using the build waveform function.
    Hope this answers your question.
    Best regards,
    Erik vH.
    Applications Engineering
    National Instruments

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