Please check my VI and tell me if something is wrong.

Question

    I tying to build and Simulate the dynamic
response of first order system ,
I'm new in labview , I think something is not as should  be.
please check the attachment file and give me a suggestion or correct any errors that you see in the VI.
Here are the instructions I followed
y(n)= Δt       *    (  T
 * y(n-1)+x(n)  )
         T+Δt            Δt
Where T is the time constant, x(t) is the input and y(t)
is the output.
Experiment 1, Simulate
the dynamic response of first order system
1.     
Launch LabVIEW.
2.     
Create a blank VI.
3.     
The front panel should have at least an numeric
control to input the time constant and the graph indicator to show the result.
4.     
Drop the “Simulated Signal” express VI and
choose the signal type as square wave, frequency as 1Hz, sample frequency as
1000Hz and number of data points as 500.
5.     
Use “Convert from Dynamic Data” VI to convert
the data from the “Simulated Signal” express VI to single waveform data.
6.     
Use waveform function to extract the waveform
data and the time interval of the waveform.
7.     
Use FOR loop to iterate the output data of the
first order system.
8.     
Use the formula node to program the algorithm based
on equation 3.
9.     
Use waveform function to create the waveform
data from the output data and the time interval of the input waveform.
10.  Use
“Build Array” function to create an array that consists of the input and output
waveforms.
11.  Use
graph indicator to show the input and output waveforms.
12.  Use
“Write LabVIEW Measurement File” VI to save the data in a file.
13.  Run
the VI using the following time constants: 0.01, 0.03, 0.05, 0.07 and 0.1, and
save the results to files.
Attachments:
Untitled 1.vi ‏66 KB

Answer 1

Hi Neoforce,
If you want i can give some help doing that program. Yours it's completly confuse. You really are new to labview.
So, if can explain what you want. I can try to do the program for you.
y=(dt/(T+dt))*((T/dt)*y1+x); it's the expression. But explain the inputs dt, T,X and y1.
What is the result that you expect to see in the graph? It's y(x)?
Software developer
www.mcm-electronics.com
PS: Don't forget to rate a good anwser ; )
Currently using Labview 2011
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