Non-linear equation solution

I have used Lev-Mar Non-Linear VI before but cannot understand how to apply to the following:
deltaTC = R(TC)*L^2 + QS + QC(TC) +QR(TC)*dt
where variables containing (TC) are dependent on TC.
I have samples of change of L over time (dt). Trying to determine dTC with variables dependent on TC (current value - which means initial T + dTC).
Any help much appreciated.

Hi Battler,
I am not sure if you know this or not but Lev-Mar Non-Linear VI is not supported any more. Instead you can use Nonlinear Curve Fit.vi . It is located in function->mathematics->fitting palette.
The functionality of both of them is the same.Next you can go LabVIEW help, search for this VI, and then look at the "Linear, Exp, and Power Fitting VI: labview\examples\math\curvefit.llb"
example. On the block diagram go to "Time out"and "true" for the case structures.You will see the Nonlinear Curve fit.vi, you need to input your equation to the reference terminal f(x,a). So
you need to make a subVI of your equation, and input it into f(x,a). Hope this helps!!
Edna
National Instruments
Applications Engineer

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Is it what you wanted ?
In cells of column B, the formula is :
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Between the late double quotes I insreted the character INFINITY ($221E)
Yvan KOENIG (VALLAURIS, France) mercredi 21 avril 2010 20:44:36

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i don't understand what do you suppose to mean?
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formula_node_example.vi ‏25 KB

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Hi Altenbach,
The data can have a significant amount of overlap. Typically three to four groups of peaks fully resolved, but each group can have up to 4-5 peaks in them, partially visible only as shoulders.
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I've got an approximate first-guess peak find running which does a pretty good job of finding the peaks I need, and I then fit the height and FWHM first before doing a full optimisation (The Sub-VI approach allows much more flexible fitting models).
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Attachments:
Spectra.zip ‏3 KB

Non-linear ODE

Hello everybody,
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Attachments:
shooting method.zip ‏43 KB

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Hello.
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Hell Venky.
Thnak you for your helping.
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NEC Digital Phone---NEC PBX---Gateway---(cat6500---MSPP(WAN Area)---cat6500)---Gateway---NEC Digital Phone.
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2851(config-voiceport)#?
Voice-port configuration commands:
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no Negate a command or set its defaults
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threshold Threshold [noise] for voice port
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Hi,
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LabVIEW Champion . Do more with less code and in less time .
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DiffEQ.vi ‏33 KB

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Hi ,
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HT201210 None of these solutions are working.

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Non-linear equation solution

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