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Guys, I want to know if Matlab 7.7 has some compressor model? I read that a eps folder should be necessary, but I just can't find it and I don't know how to install it either. I also read that it is only available in older versions of Matlab, I need to install an old version to use this, isn't there an other way of doing this?

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Walter Roberson
Walter Roberson 2012-1-17
Is this perhaps a Simulink related question?
Danilo NASCIMENTO
Danilo NASCIMENTO 2012-1-17
yes, this is in simulink.
Walter Roberson
Walter Roberson 2012-1-17
Which kind of compressor are you looking for? Something similar to http://www.mathworks.com/help/toolbox/physmod/simscape/ref/controlledpneumaticflowratesource.html
Or http://www.mathworks.com/products/aerotb/demos.html?file=/products/demos/shipping/aero/astsswt.html
Danilo NASCIMENTO
Danilo NASCIMENTO 2012-1-17
No,I want a compressor model that it is inside esp fold from simulink. This way: http://www.youtube.com/watch?v=7hf3XuvAxMs

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Walter Roberson
Walter Roberson 2012-1-17

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This appears to be a reference to http://www.aaronklapheck.com/intermediate_thermodynamics.html which refers to a professor's files http://www.aaronklapheck.com/Downloads/Thermodynamics_2/ESP.zip . The note there says it only works on MATLAB 7.0.1 or earlier.
If I understand correctly, ESP was created by a professor and was not shipped by MathWorks, which is why you cannot find it in your distribution or the documentation.
If you do choose to download it, decompress it in to a directory under your account, and add the name of that directory to your matlabpath, perhaps by using addpath() .
I do not have Simulink, or a release of MATLAB that old, so this is not something I have the facilities to debug.

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Danilo NASCIMENTO
Danilo NASCIMENTO 2012-1-17
If I am using an older version of Matlab, I put in the console
addpath 'path' an does it going to appear a folder of eps together with simulink, aerospace blockset, communications blockset and so on?
Walter Roberson
Walter Roberson 2012-1-17
Yes.
You may wish to use pathtool instead of addpath . addpath is temporary; pathtool allows you to save the path.
Danilo NASCIMENTO
Danilo NASCIMENTO 2012-1-18
Ok. What I wanted to do is use a DC motor and control the velocity of this motor, this way I can connect this dc motor to the compressor and vary the rate of air leaving it.
Walter Roberson
Walter Roberson 2012-1-18
Dunno. Sounds like a Controlled Pneumatic Flow Rate Source block to me.
Danilo NASCIMENTO
Danilo NASCIMENTO 2012-1-18
I guess the temperature of the air out of the compressor is higher than when it is entering it and that is no option of observing this using this controlled pneumatic flow rate source block.
Walter Roberson
Walter Roberson 2012-1-18
Sorry, this is beyond my experience.
i621148
i621148 2017-7-31
Check this paper done with published MATLAB source code:
DESIGN AND PREDICTION OF TEMPERATURE DISTRIBUTION OF PISTON OF RECIPROCATING AIR COMPRESSOR Bhaumik Patel1, Ashwin Bhabhor2
http://www.technicaljournalsonline.com/ijaers/VOL%20I/IJAERS%20VOL%20I%20ISSUE%20III%20APRIL%20JUNE%202012/151.pdf

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