Build Waveform, SI Module Residual Analysis, System Identification MIMO

Hi, I have a question stemming from this page, with the residual analysis model: http://zone.ni.com/reference/en-XX/help/372458D-01/lvsysidconcepts/case_study_validating/#Simulation...
So this is for ARX, a SISO function. I want to do the same with a State Space MIMO function. I'm having some trouble with the Build Waveform, the types for the waveform doesn't match up. It appears there's another dimension to the autocorrelation/crosscorrelation, which is causing some issue. Is there a way I can do this with a MIMO so I can build the waveform?
Thanks,
Andrea
Solved!
Go to Solution.

Hello Andrea,
You should be able to work with the Index Array function and the MIMO Waveform configuration of the SI Model Residual Analysis VI. As seen in the snippet below, you can wire the 2D Waveform array into the Index Array function and the default output will be a 1D Waveform array.
Then, using the Index Array function again, we are left with the waveform that existed in the zeroth row and the zeroth column of that initial 2D Waveform array. Once we have extracted out the desired waveform, we can use the Get Waveform Components function or wire the data directly to an indicator.
When working through this exercise, you may find using the Context Help window to be very useful. With the Context Help Window (press CTRL+H), you can mouse over wires and determine their data type.
For more information concerning array manipulation, I highly recommend looking through the examples in the NI Example Finder’s Fundamentals»Arrays and Clusters directory. You can open the NI Example Finder by navigating to Help»Find Examples....
Cameron F
Applications Engineer
National Instruments

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Thanks for that.
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HI ToolMonkey
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Attachments:
Test1_RT.vi ‏186 KB

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kristel wrote:
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Build Waveform, SI Module Residual Analysis, System Identification MIMO

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