model Model_A

 ...

   algorithm

  if timer_dyn.y > t_dyn then

    condition1 := true;

  else

    condition1 := false;

  end if;

  

  if isOV or isUV or condition1 then

    isON := false;

  else

    isON := true;

  end if;

  y := i;



end Model_A;



model Model_B

   ...

   equation

  if timer_dyn.y > t_dyn then

    condition1 = true;

  else

    condition1 = false;

  end if;

  

  if isOV or isUV or condition1 then

    isON = false;

  else

    isON = true;

  end if;

  y = i;



end Model_B;

Hi Everyone,

I have some question about the difference between algorithm statment and equation and how it handled in Modelica. Both Model_A and Model_B have the same functions. Both work identically as far as some test that i run in OM (i.e isON change its state when ever the conditions are met). The only difference that i notice is when i export the model as FMU. In the description file of Model_A the following c-flies are included:

      ./simulation/solver/nonlinearSystem.c
      ./simulation/solver/nonlinearValuesList.c
      ./simulation/solver/nonlinearSolverHybrd.c
      ./simulation/solver/nonlinearSolverHomotopy.c
      ./external_solvers/enorm_.c
      ./external_solvers/hybrj_.c
      ./external_solvers/dpmpar_.c
      ./external_solvers/qrfac_.c
      ./external_solvers/qform_.c
      ./external_solvers/dogleg_.c
      ./external_solvers/r1updt_.c"
      ./external_solvers/r1mpyq_.c

that weren't included in the modelDescription of Model_B. So i was wondering, how/when was it preferable to assign somting as an algorithm statment and how/when it is better to do with a normal equation? One thing i notice is, with algorithm statment, you can, for example, write two or three differrent when-statment and assign the same variable with different value and still count as one equation, but the same process as equation will count as two or three.

when a then

  Variable := a

end when;



when b then

  Variable := b

end when;

cheers
A