input doesn't match output [Non-member submission Andrey Behrens]

[Adrian Pop]

Hi Andrey,

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Adrian Pop/

On 2010-02-05 16:51, owner-openmodelicainter...@ida.liu.se wrote:

From: Andrey Behrens<andrey.behr...@openaqua.de>
To: openmodelicainterest@ida.liu.se
Subject: input doesn't match output
Date: Fri, 5 Feb 2010 16:51:15 +0100

Hello,

the attached model seems be broken.  The idea is to have a building which
produces money (10 units per second).

The money shall be stored in a storage.

WW connects to money producer with the storage via a connect statement.

If I let run the model and look at the results the Building seems to work. At
the first second I get 10 units.  The units appears at the same moment on the
storage.

But the addition seems not to work.

At first the addition doubles the income. At second the addition will be done
two times per second.

I don't see the problem. Can someone help me?

Kindly Regards

----------------------------------------------------


//==============================================
connector MoneyInput    output Real m; end MoneyInput;
connector MoneyOutput   input  Real m; end MoneyOutput;

//==============================================
class Building
   parameter Real    value=10;
   discrete MoneyOutput outcome;
equation
   when sample(1,1) then
       outcome.m=value;
   end when;
end  Building;

//==============================================
class Storage
   discrete Real storage(start=0);
   discrete MoneyInput income;
equation
   storage = pre(storage)+income.m;
end Storage;

//==============================================
model WW
   Building depot;
   Storage storage;
equation
   connect(depot.out, storage.income);
end WW;

--
_____________________________________________________________________
Adrian Pop                      | PhD
Open Source Modelica Consortium | Technical Coordinator
Department of Computer Science  | http://www.ida.liu.se/~adrpo
Linköping University            | phone:+46 76 2343499/+46 13 285781
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