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- LabView code for Allan Variance?

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03-18-2008 05:54 AM

Hy folks,

here is an update (LV 7.1) of the Allan-Statistics.llb.

The top level VI is "Allan_Plots.VI" - it calculates, displays and safes the Allan variance/deviation plots of time-domain data series.

The algorithm is according to Th. Witt, IEEE Trans. Instr. Meas. 50, 445 (2001).

[Definition of Allan variance: Allan variance is one half of the mean-square of the differences of successive averages of the input array Elements of the input array are time-averaged data.]

Hope it is useful for you!

H. Scherer

here is an update (LV 7.1) of the Allan-Statistics.llb.

The top level VI is "Allan_Plots.VI" - it calculates, displays and safes the Allan variance/deviation plots of time-domain data series.

The algorithm is according to Th. Witt, IEEE Trans. Instr. Meas. 50, 445 (2001).

[Definition of Allan variance: Allan variance is one half of the mean-square of the differences of successive averages of the input array Elements of the input array are time-averaged data.]

Hope it is useful for you!

H. Scherer

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03-18-2008 06:08 AM

Hallo Hansjoerg,

can you save a llb with block diagrams enabled?

can you save a llb with block diagrams enabled?

Best regards,

GerdW

CLAD, using 2009SP1 + LV2011SP1 (sometimes even LV2014) on WinXP+Win7+cRIO

Kudos are welcome

GerdW

CLAD, using 2009SP1 + LV2011SP1 (sometimes even LV2014) on WinXP+Win7+cRIO

Kudos are welcome

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03-19-2008 10:21 AM

Sorry, here is the "Allan-Statistics_V2_LV711.llb" again, now with diagrams enabled.

The top level VI is "Allan_Plots.VI" - it calculates, displays and safes the Allan variance/deviation plots of time-domain data series.

The algorithm is according to Th. Witt, IEEE Trans. Instr. Meas. 50, 445 (2001).

Definition of Allan variance: Allan variance is one half of the mean-square of the differences of successive averages of the input array Elements of the input array are time-averaged data.

Hansjörg

The top level VI is "Allan_Plots.VI" - it calculates, displays and safes the Allan variance/deviation plots of time-domain data series.

The algorithm is according to Th. Witt, IEEE Trans. Instr. Meas. 50, 445 (2001).

Definition of Allan variance: Allan variance is one half of the mean-square of the differences of successive averages of the input array Elements of the input array are time-averaged data.

Hansjörg

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03-19-2008 10:22 AM

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03-19-2008 10:50 AM

Sorry, after having uploaded a LV llb as attachment to this forum, I have some remarks and hope that some moderator might read this:

First, I find it awkward to use a forum for exchange of code, as it seems to be usuable now. Earlier, there used to be a web library for all sorts of LV code (not only the instruments driver library, as you find it now at the right hand side of the Developer Zone web page). At the beginning of this thread the (former) path to that Development Library was given:

NI Home > NI Developer Zone > Development Library > Measurement and Automation Software > LabVIEW > Development System > Fundamentals > Graphs and Charts

or (URL):

Am I right that this Development Library really are no more accessible via links??

(Direct access is still possible if you know the path, for example for the Allan Viariance llb via "http://sine.ni.com/devzone/cda/epd/p/id/502")

Second, regarding the "ease of use" of this forum, I found that when you want to post message and use the preview option, unfortunately any attachment is lost...

Maybe somebody can care about that.

Regards,

Hansjörg

First, I find it awkward to use a forum for exchange of code, as it seems to be usuable now. Earlier, there used to be a web library for all sorts of LV code (not only the instruments driver library, as you find it now at the right hand side of the Developer Zone web page). At the beginning of this thread the (former) path to that Development Library was given:

NI Home > NI Developer Zone > Development Library > Measurement and Automation Software > LabVIEW > Development System > Fundamentals > Graphs and Charts

or (URL):

Am I right that this Development Library really are no more accessible via links??

(Direct access is still possible if you know the path, for example for the Allan Viariance llb via "http://sine.ni.com/devzone/cda/epd/p/id/502")

Second, regarding the "ease of use" of this forum, I found that when you want to post message and use the preview option, unfortunately any attachment is lost...

Maybe somebody can care about that.

Regards,

Hansjörg

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03-19-2008 11:28 AM

Hi Hansjörg,

there now is a "Code Sharing" part of the developer zone - maybe you can upload your llb there too...

there now is a "Code Sharing" part of the developer zone - maybe you can upload your llb there too...

Best regards,

GerdW

CLAD, using 2009SP1 + LV2011SP1 (sometimes even LV2014) on WinXP+Win7+cRIO

Kudos are welcome

GerdW

CLAD, using 2009SP1 + LV2011SP1 (sometimes even LV2014) on WinXP+Win7+cRIO

Kudos are welcome

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03-19-2008 11:46 AM

Hi GerdW,

thanks for answring - it seems that at NI Developer Zone > Communities I have only the choice to upload under the categories

"Example", "Tutorial", or "Textbook..."

None of these seems to fit in my case, so where to upload my llb to?

Hansjörg

thanks for answring - it seems that at NI Developer Zone > Communities I have only the choice to upload under the categories

"Example", "Tutorial", or "Textbook..."

None of these seems to fit in my case, so where to upload my llb to?

Hansjörg

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09-13-2010 05:27 AM

Hi folks,

is there any possibility to create Allan llb to run under LV8.6.1?

I am working with atomic clocks stability measurements and would like to check how it is done with computations.

for any help thanks a lot.

greg

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09-13-2010 05:48 AM

Hi greg,

did you try that llb? The name suggests it's created with LV7.1 - so you could easily mass-compile it for your LV8.6

Best regards,

GerdW

CLAD, using 2009SP1 + LV2011SP1 (sometimes even LV2014) on WinXP+Win7+cRIO

Kudos are welcome

GerdW

CLAD, using 2009SP1 + LV2011SP1 (sometimes even LV2014) on WinXP+Win7+cRIO

Kudos are welcome

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09-13-2010 01:15 PM

Hello GerdW,

i haven't tried yet.

I managed to run that llb, but i don't know yet how to include it in my project.

Do i need to extract somehow vi's from that llb or link it to my project?

thanks for help

greg