Keep persistent variable values

Hi all

I'm about to create a random coefficients (FRC) for an Adaptive order blur in LabVIEW. The original design made in MATLAB/SIMULINK and I'm trying to translate functions in LabVIEW to my creations.
The MATLAB function is then called in Simulink and returns the results. What I'm stuck with, is how PERMANENT is kept in LabVIEW. Consider the following script:

e = [0.2 0.3];

current_error = e (1);
simulation_time = e (2);

number of persistent;
persistent previous_error;

If isempty (count)
Count = 0;
end

If isempty (previous_error)
previous_error = 0;
end

Count = count + 1;

control_activity = (current_error + previous_error) count;

previous_error = current_error + previous_error;

The above script retains the values of the persistent variables (County, previous_error) intact whenever this function is called in Simulink. But in LabVIEW how it's done?
I'll probably call the same function in LabVIEW in a main loop. Am I supposed to use the shift registers to pass values between iterations?

It will be the variable persistence?

There is one post of the same problem in this forum, but the guy there wants to keep intact values using the VI. I, on the other hand, want to keep my values in a jar as soon as my function is called in a loop.

Help!

Kind regards.

NapDynamite wrote:

The above script retains the values of the persistent variables (County, previous_error) intact whenever this function is called in Simulink. But in LabVIEW how it's done?
I'll probably call the same function in LabVIEW in a main loop. Am I supposed to use the shift registers to pass values between iterations?

It will be the variable persistence?

Yes, using shift registers

Tags: NI Software

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