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Modelling of steam flow control valve?

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vishnuvardhan naidu tanga
回答： Ameer Hamza 2020-6-4
Hello,
I am trying to model a simple steam control valve in simulink. Is there any way to model that. I know the basic dynamics of the valve, how can i implement the actuation of the valve in simulink.
  2 个评论
Ameer Hamza
Ameer Hamza 2020-6-4
What is the equation for the block dynamics?
vishnuvardhan naidu tanga
vishnuvardhan naidu tanga 2020-6-4
ms = xs*13.6*sqrt(rho*P)*Kv/3600;
here ms = mass florate
rho = Density
P = pressure
Kv = valve coefficient
xs = is the valve opening % from 0 - 100%
I need to control the xs with respect to time. for example 10% every 100 sec

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Ameer Hamza
Ameer Hamza 2020-6-4
You can use the MATLAB function block: https://www.mathworks.com/help/simulink/ug/creating-an-example-model-that-uses-a-matlab-function-block.html to write this equation. Then you can use a pulse generator block: https://www.mathworks.com/help/simulink/slref/pulsegenerator.html to generate a periodic pulse.

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