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Modelica control of constant input (Type Real)

asked 2019-06-17 19:12:05 -0500

first1's avatar

updated 2019-06-18 11:56:39 -0500

I have a real constant serving as the source for a linear valve in Modelica. I would like to control this input.

I tried redefining the parameter k=k: "parameter Real k = 0.5;" --> works fine, gives a result!

Then if I redefine as "parameter Real k;" and try defining "k = 0.5;" under equations, I get the error that there are one too many equations. Okay...kind of makes sense as I did add one but I only defined k once.

My goal was to define k in equations so that I could set up a controller to stabilize flow. Should I be able to do this? If not, is there another method I should be trying?


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answered 2019-06-18 10:13:54 -0500

first1's avatar

updated 2019-06-18 10:16:12 -0500

Update. It turns out I can get rid of the real constant icon and redefine this term as something like valve.opening = 0.5 in the equation section.

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Asked: 2019-06-17 19:12:05 -0500

Seen: 249 times

Last updated: Jun 18 '19