PID control on liquid level

[Jonathan Tracy]

I'm looking for a simple (I hope) vi that controls liquid level by reading
a signal
representing the level and ouputs a reverse-acting signal to a flowmeter/controller
to lower the upstream flowrate. I would like to be able to vary the P, I,
and D
parameters and, if possible, look at the process response based on step changes
and other upsets. Anyone have ideas?

[markwysong@my-deja.com]

Check out the VIs in labview/examples/daq/solution/control.llb

There are a few PID examples in this one. I used the simple PID VI and
it worked on my application just fine.

Mark

In article <39a18dd1@newsgroups.ni.com>,
"Jonathan Tracy" wrote:
>
> I'm looking for a simple (I hope) vi that controls liquid level by
reading
> a signal
> representing the level and ouputs a reverse-acting signal to a
flowmeter/controller
> to lower the upstream flowrate. I would like to be able to vary the
P, I,
> and D
> parameters and, if possible, look at the process response based on
step changes
> and other upsets. Anyone have ideas?
>


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