Delay setpoint in PID

[rbpassos]

Hi everyone,

I am currently building an application to control a plant using PID on LabVIEW.
I would like to have the setpoint collected from an analog input module.

The problem is that I do not want the analog input signal data to be used as the actual setpoint, at the time its being read

What I want is to give a delay into the measured signal, so from that point on all data measured will be the set point, but with a constant delay.

Is that possible? Could you help me?

I really appreciate your attention.

Rafael

[rbpassos]

I think i can solve it with the vi pt by pt queue...

[FloresFe]

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I would like to have the setpoint collected from an analog input module.

The problem is that I do not want the analog input signal data to be used as the actual setpoint, at the time its being read

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As far as I understood your problem, you do want to have the AI as the actual Setpoint. What you do not want is to have it as the current setpoint. Am I correct?

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 What I want is to give a delay into the measured signal, so from that point on all data measured will be the set point, but with a constant delay.

Is that possible? Could you help me?

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What do you exacly mean when you say "delay"? is it a time delay (i.e., 50 milliseconds) or you mean a discrete delay (I.e., using the AI value from the previous iteration as the setpoint for the current iteration of the loop?

[rbpassos]

Hi Felipe,

Thanks for your attention.

In fact you understand my point pretty well.

I want a delay in time, which I expect to change for discrete since i can follow the iteration clock.

regards