source: trunk/eml/controllers/lag_1.mso @ 282

#*-------------------------------------------------------------------
* EMSO Model Library (EML) Copyright (C) 2004 - 2007 ALSOC.
*
* This LIBRARY is free software; you can distribute it and/or modify
* it under the therms of the ALSOC FREE LICENSE as available at
* http://www.enq.ufrgs.br/alsoc.
*
* EMSO Copyright (C) 2004 - 2007 ALSOC, original code
* from http://www.rps.eng.br Copyright (C) 2002-2004.
* All rights reserved.
*
* EMSO is distributed under the therms of the ALSOC LICENSE as
* available at http://www.enq.ufrgs.br/alsoc.
*
*----------------------------------------------------------------------
* Model Lag
*-----------------------------------------------------------------------
* - Inputs
*               - One input signal
* 
* - Outputs
*               - One output signal
*
*-----------------------------------------------------------------------
* Author: Tiago Osório
* $Id: lag_1.mso 176 2007-03-04 04:56:54Z arge $
*---------------------------------------------------------------------*#

using "types";
 
 
Model Lag_1

        PARAMETERS
        gain as positive (Brief="model gain");
        tau  as positive (Brief="model time constant", Unit='s');
        
        VARIABLES
        input  as Real  (Brief="input signal");
        output as Real  (Brief="output signal");
        
        EQUATIONS
        
        "Calculate output"
        gain*input= tau*diff(output) + output;
        
        INITIAL
        diff(output)=0/'s';
        
end