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Access initial variables of subclass

#7444  Permalink Top

Access initial variables of subclass

Jan-13-17 13:42:23

Hello,
I am trying to access the initial condition of the variable in a sub class. The code is as given below.

Code:

class MainClass001

  class SubClass001

    Modelica.Blocks.Interfaces.RealInput u annotation(

      Placement(visible = true, transformation(origin = {-106, 0}, extent = {{-20, -20}, {20, 20}}, rotation = 0), iconTransformation(origin = {-106, 0}, extent = {{-20, -20}, {20, 20}}, rotation = 0)));

    Modelica.Blocks.Interfaces.RealOutput y annotation(

      Placement(visible = true, transformation(origin = {106, 0}, extent = {{-10, -10}, {10, 10}}, rotation = 0), iconTransformation(origin = {106, 0}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));  

    Modelica.SIunits.Angle phi(start=0) "phi";    

  equation

    der(phi) = u;

    y = phi;  

  end SubClass001;

  class SubClass002

    Modelica.Blocks.Interfaces.RealInput u annotation(

      Placement(visible = true, transformation(origin = {-108, 0}, extent = {{-20, -20}, {20, 20}}, rotation = 0), iconTransformation(origin = {-108, 0}, extent = {{-20, -20}, {20, 20}}, rotation = 0)));

    Modelica.Blocks.Interfaces.RealOutput y annotation(

      Placement(visible = true, transformation(origin = {100, 0}, extent = {{-10, -10}, {10, 10}}, rotation = 0), iconTransformation(origin = {100, 0}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));

  MainClass001.SubClass001 subClass0011 annotation(

      Placement(visible = true, transformation(origin = {0, 0}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));

    parameter Real initial_condition "Initial condition for phi";    

    equation

    subClass0011.phi.start = initial_condition;

    connect(subClass0011.u,u);

    connect(subClass0011.y,y);  

  end SubClass002;

  annotation(

    uses(Modelica(version = "3.2.2")));

end MainClass001;

I am getting the following error.

Code:

[1] 19:07:32 Translation Error

[MainClass001: 26:5-26:47]: Variable subClass0011.phi.start not found in scope MainClass001.SubClass002.



[2] 19:07:32 Translation Error

Error occurred while flattening model MainClass001.SubClass002

Please let me know how to resolve this issue. It would be a great help if I could get through this.
Thanks in advance!!

#7445  Permalink Top

Re: Access initial variables of subclass

Jan-13-17 13:57:49

You cannot access variable attributes by dot-notation

#7446  Permalink Top

Re: Access initial variables of subclass

Jan-13-17 14:00:22

Thanks for the prompt reply.
Is there any other way, that I can assign values to the variable attributes?

#7447  Permalink Top

Re: Access initial variables of subclass

Jan-13-17 17:32:08

Only via modification on variable declaration:

Code:


MainClass001.SubClass001 subClass0011(phi(start = initial_condition));

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