source: trunk/eml/controllers/lag_1.mso @ 291

#*-------------------------------------------------------------------
* 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.
*-----------------------------------------------------------------------
* Author: Tiago Osório
* $Id: lag_1.mso 291 2007-06-21 17:34:12Z bicca $
*---------------------------------------------------------------------*#

using "types";
 
 
Model Lag_1

ATTRIBUTES
        Pallete         = true;
        Icon            = "Lag_1"; 
        Brief           = "Model Lag.";
        Info            =
        "
        - Inputs:
        * One input signal.
        
        - Outputs:
        * One output signal.
        ";
        
        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