How do I get displacement from accelerometers?

We work with an ultraprecision lathe measuring vibration during machining using a NI Labview acquisition system and 2 PCB accelerometers. Signal from accelerometers goes through a conditioner box, where it is also amplified, then to the acquisition board. This signal is treated in Labview with a bandpass filter (which is supposed to take off all DC) and it�s also sent to a FFT box that shows it has a strong component around 600 Hz .
This signal resembles a sine wave and represents of course acceleration. In order to have displacement we tried to integrate it twice (2 Integral x(t) Labview boxes).
First problem is that the integrated signal becomes very oscillatory, much like a cosine wave superimposing a ramp that switc
hes from increasing to decreasing (and vice-versa) almost randomly (we didn�t expect to have any DC component).
Also, changing �dt� value of de Integral x(t) box in Labview changes our signal completely. What should be the best �dt� value?
We have no experience with that. Has anyone successfully obtained displacement with accelerometers? Your help is highly appreciated.
Thanks
Erick

What do you want to do with the data? Do you need displacement time or a
displacement spectrum?
We have a commercial dll that gets displacement time and spectra but we use
filtered forward and inverse ffts instead of the routines that you mention.
Duncan
http://www.vibrotek.com

Similar Messages

How can I get values from listbox?

Hi all,
I need to get price values from Price List (Inventory -> Item Master Data screen). It's important to get values from field 'Price' BEFORE item will be added/updated.
How can I get values from Pricelist listbox?
Thanks for any suggestions or short sample code.
Best regards,
Andy

Hi Andy
Here is som sample code that will get the description of the price list and also the price that is displaying at the time. The item master must be open for this snippet of code
Public Sub GetItemPriceFromOpenWindow()
        'this is assuming item master is open
        Dim oEdit As SAPbouiCOM.EditText
        oEdit = SBO_Application.Forms.GetForm("150", 1).Items.Item("34").Specific
        SBO_Application.MessageBox(oEdit.Value)
        Dim oCmb As SAPbouiCOM.ComboBox
        oCmb = SBO_Application.Forms.GetForm("150", 1).Items.Item("24").Specific
        SBO_Application.MessageBox(oCmb.Selected.Description)
    End Sub
Hope it helps

I have a 120gb Classic that has no space left on it. i am going to buy a larger gb capacity ipod as soon as i get clearer instruction on how to get the old ipod content to the new ipod. How do you get content from one ipod to the other?

how do you get content from one ipod to the new one? my content is on an external hard drive not on my pc and i have run out of space on my 120gb classic. can you get old ipod content to new? my itunes has only got short cuts, the real content is on an external drive? can this be done?? please help

If the content is on an external drive, but your library knows where to find it, then it should all work. Connect your device, make some selections for what to put on it, and sync. If, on the other hand, your current iPod is the only place holding some of your media then see this user tip: Recover your iTunes library from your iPod or iOS device.
tt2

My iphone is broken and i am getting a new one sent out. How do i get everything from my old phone copied to the new one so its exactly the same??

My iphone is broken and i am getting a new one sent out. How do i get everything from my old phone copied to the new one so its exactly the same??

As long as they are already ticked in your iTunes then yes. Just to check do a sync and as long as everything stays the same you are good to go.

How do I get music from one account to another?

How do I get music from one account to another? I have music on one account that I no longer use and need to get my music off of it and put it on my new account without repurchasing all my music again

Click here and ask the iTunes Store staff for assistance.
(115549)

When I use Home sharing, I can see the library I want to copy, but when I highlight the library, the import button does not show up. Also, it will not let me drop and drag. How do I get music from one computer to the other computer?

When I use Home Sharing, I can see the library I want to copy under Shared, but I can't get it save on the computer under the regular library. I go to edit and "select all" but there is no import button that is in the right hand corner. Also, it will not let me click and drag the music. How do I get it from one computer to the other?

Since both computers are connected via the network, you could simply copy the ENTIRE iTunes folder from one computer to another via the network.
If both computers are running Windows, use the Easy File Transfer Utility built into Windows to move iTunes and all other user media/data.

How do I get songs from one Mac to another?

How do I get songs from one Mac to another?

iTunes for Mac: How to copy purchases between authorized computers
Regards.

HT203167 lost my hard drive how can i get songs from ipod back to new computer

I lost my hard drive and want to get my music back on my new computer. How can I get songs from my ipod to my computer? I am afraid to sync it and losing what is on my ipod. Any help would be appreciated.

It has always been very basic to always maintain a backup copy of your computer for this very occasion.
Use your backup copy to put everything back.
If for some reason you have failed to maintain a backup, not good, then you can transfer itunes purchases from your ipod: File>Transfer Purchases

How can I get Data from the Sound cart in Labview? Does a VI exist?

How can I get Data from the Sound cart in Labview? Does a VI exist?

Yes, there are VIs for acquiring data from Sound cards. And examples too. If you don't have LabVIEW yet, do a search on NI's site for example VIs.
Khalid

How do I get songs from iPod(video) to iTunes(7 and using VISTA).

How do I get songs from iPod(video) to iTunes(i'm using iTunes7 and Vista).
I don't have the disc, cause i can't find it. But my computer downloaded the ipod, it just cant find the files?
i've been looking through the topics for the past hour and none of them helped. Maybe i'm stupid i dont really know, but i've restored my old computer a couple times and i found a post and it helped both times. now i can't find it anymore.
THIS IS THE ONE I'VE BEEN SEEING AND IT DOESN'T HELP ME ONE BIT:
Connect your iPod to your computer. If it is set to update automatically you'll get a message that it is linked to a different library and asking if you want to link to this one and replace all your songs etc, press "Cancel". Pressing "Erase and Sync" will irretrievably remove all the songs from your iPod. Your iPod should appear in the iTunes source list from where you can change the update setting to manual and use your iPod without the risk of accidentally erasing it. Also when using most of the utilities listed below your iPod needs to be enabled for disc use, changing to manual update will do this by default. Check the "manually manage music and videos" box in Summary then press the Apply button: Managing content manually on iPod
Once you are safely connected there are a few things you can do to restore your iTunes from the iPod. If you have any iTunes Music Store purchases the transfer of purchased content from the iPod to authorised computers was introduced with iTunes 7. You'll find details in this article: Copying iTunes Store purchases from your iPod to a computer
The transfer of content from other sources such as songs imported from CD is designed by default to be one way from iTunes to iPod. However there are a number of third party utilities that you can use to retrieve the music files and playlists from your iPod. You'll find that they have varying degrees of functionality and some will transfer movies, videos, photos, podcasts and games as well. Have a look at the web pages and documentation, this is just a small selection of what's available, they are generally quite straightforward. You can read reviews and comparisons of some of them here:
Wired News - Rescue Your Stranded Tunes
Comparison of iPod managers
TuneJack Windows Only
iPod2PC Windows Only
iGadget Windows Only
iDump Windows Only
SharePod Windows Only
iPodRip Mac & Windows
YamiPod Mac and Windows
Music Rescue Mac & Windows
iPodCopy Mac and Windows
iRepo Mac & Windows (iPhone and iPod Touch compatible)
iPod Access Mac & Windows (iPhone and iPod Touch compatible)
There's also a manual method of copying songs from your iPod to a Mac or PC. The procedure is a bit involved and won't recover playlists but if you're interested it's available on page 2 at this link: Copying Content from your iPod to your Computer - The Definitive Guide
Whichever of these retrieval methods you choose, keep your iPod in manual mode until you have reloaded your iTunes and you are happy with your playlists etc then it will be safe to return it auto-sync. I would also advise that you get yourself an external hard drive and back your stuff up, relying on an iPod as your sole backup is not a good idea and external drives are comparatively inexpensive these days, you can get loads of storage for a reasonable outlay.
Can someone give me a link, or tell me one that shows step by step.

Here is a way of doing it, for another take on this, search the forum for posts by Zevoneer.
Copy from iPod to PC
It is important not to allow your iPod to sync with an empty library. If it is set to synchronise automatically you will get a message saying your iPod is linked to a different library and asking if you want to sync – it is important to press cancel as syncing with an empty library erases all music from your iPod.
You can also prevent auto sync by holding down shift & ctrl as you plug in your iPod and keeping the keys held down until the iPod appears in iTunes.
Once you are connected, you need to set your iPod to manage music manually.
http://docs.info.apple.com/article.html?artnum=61148
If you have an iPod with iTunes Store purchases on it, you can use it to copy your purchases to other authorized computers.
http://docs.info.apple.com/article.html?path=iTunesWin/7.3/en/2586win.html
However this is not allowed for other music.
This MacMuse tip tells you how to copy music from your iPod using Windows Explorer, but it is a bit fiddly:
http://discussions.apple.com/messageview.jspa?messageID=797432
Otherwise you can use third party software to manage the transfer, there are a variety of programs out there, some free and some that will copy ratings and counts as well as the music files. Here is a selection, check them out and see what suits you.
http://www.yamipod.com/main/modules/home/
http://www.floola.com/modules/wiwimod/index.php?page=WiwiHome
http://www.ipodsoft.com/site/pmwiki.php?n=igadget.Homepage
http://www.copytrans.net/
You can find others by Googling: copy iPod to iTunes
There is a useful background article on copying from your iPod here:
http://www.ilounge.com/index.php/articles/comments/copying-music-from-ipod-to-co mputer/

HT1373 How do I get music from iCloud to my ipad

How do I get music from iCloud to iPad and iPhone 4s

Downloading past purchases from the App Store, iBookstore, and iTunes Store

How can i get contacts from my old Nokia phone to iphone 4S

how can i get contacts from my old Nokia phone to iphone 4S?

Appreciate the reply thank you
Issue being is I don't have the lead for the samsung any longer but have the memory card?
An yes I know I need to get them onto my MAC but how is what i'm struggling with?
Any help would be appreciated.
Many thanks

How can i get data from another database SQL Server use database link from

I have a database link from Oracle connect to SQL Server database with user cdit connect default database NorthWind.How can I get data from another database(this database in this SQL Server use this database link)?

hi,
u should see following documentation:
Oracle9i Heterogeneous Connectivity Administrator's Guide
Release 1 (9.0.1)
Part Number A88789_01
in it u just go to chapter no. 4 (using the gateway),,u'll find ur answer there.
regards
umar

How can I get music from old mac to new mac?

How can I get music from old mac to new mac please?
Can't seem to make Migration Assistant work. Doesn't ask about or transfer files.

I just migrated into a new MBP from an old one.
It did not bring the music over. Apple's instructions are to use the Home Sharing feature of iTunes.
Open iTunes on your old Mac. Select Home Sharing under the Advanced menu. Sign in. Do the same on your new computer. Then when the library appears under Home Sharing on the left-hand panel on your new computer's iTunes, you can select all and Add To Library.
That's what Apple says, anyway.

How can I get sound from tv or stereo when watching netflix on MacBook Air?

I have my macbook air hooked up to my tv and want to watch netflix but the only sound is from my macbook. How can I get sound from other sources ie tv or stereo?

Check with Netflix for their system requirements.

How do I get displacement from accelerometers?

Similar Messages

Maybe you are looking for