不能从JModelica检索结果返回到Python(can't retrieve the r

下面这个问题，我试图编译和仿真与JModelica一个Modelica的模型。该模型是：

package friction1D

  function coulombFriction
    input Real relVel;
    input Real shearForce;
    input Real normalForce;
    input Real statfricco;
    input Real kinfricco;
    input Real inertia;
    input Real relAcc;
    output Real fricForce;
  algorithm
    if (relVel == 0) and (abs(shearForce - inertia * relAcc) < statfricco * normalForce) then
      fricForce := shearForce - inertia * relAcc;
    else
      fricForce := kinfricco * normalForce * sign(relVel);
    end if;
  end coulombFriction;

  model fricexample_1
    //parameters
    parameter Real kco = 0.3;
    parameter Real sco = 0.4;
    parameter Real nfo = 1.0;
    parameter Real mass = 1;

    Real sfo;
    Real ffo;
    Real x;
    Real v;

  initial equation
    x = 0;
    v = 0;

  algorithm
    sfo := 1 * sin(time);

  equation
    v = der(x);
    mass * der(v) = sfo - ffo;

    ffo = coulombFriction(relVel = v, shearForce = sfo, normalForce = nfo, statfricco = sco, kinfricco = kco, inertia = mass, relAcc = der(v));
  annotation(
      experiment(StartTime = 0, StopTime = 10, Tolerance = 1e-8, Interval = 0.02),
      __OpenModelica_simulationFlags(lv = "LOG_STATS", outputFormat = "mat", s = "dassl"));end fricexample_1;

end friction1D;

和Python代码是：

from pymodelica import compile_fmu
from pyfmi import load_fmu

model_name = 'friction1D'
mofile = 'friction1D.mo'

fmu_name = compile_fmu(model_name, mofile)
sim = load_fmu(fmu_name)

res = sim.simulate(final_time=10)

当我试图召唤回结果的time = res['time']命令似乎是工作的罚款，但对人lother变量，例如， vel = res['v']它返回此错误：

---------------------------------------------------------------------------
VariableNotFoundError                     Traceback (most recent call last)
<ipython-input-19-a29270f8b1ab> in <module>()
----> 1 vel = res['v']

C:\Users\foobar\AppData\Roaming\JModelica.org-2.10\install\Python_64\pyfmi\common\algorithm_drivers.pyc in __getitem__(self, key)
    176                 Name of the variable/parameter/constant.
    177         """
--> 178         val_x = self.result_data.get_variable_data(key).x
    179 
    180         if self.result_data.is_variable(key):

C:\Users\foobar\AppData\Roaming\JModelica.org-2.10\install\Python_64\pyfmi\common\io.pyc in get_variable_data(self, name)
   1160             varInd = 0;
   1161         else:
-> 1162             varInd  = self.get_variable_index(name)
   1163 
   1164         dataInd = self.raw['dataInfo'][1][varInd]

C:\Users\foobar\AppData\Roaming\JModelica.org-2.10\install\Python_64\pyfmi\common\io.pyc in get_variable_index(self, name)
    151             else:
    152                 raise VariableNotFoundError("Cannot find variable " +
--> 153                                         name + " in data file.")
    154 
    155 

VariableNotFoundError: Cannot find variable v in data file.

我将不胜感激，如果你能帮助我知道问题是什么，我怎么能解决这个问题。

PS1。 我已经发布了这个问题也将Modelica的语言不和谐的通道。

PS2。 我认为这个问题的产生是因为我解决一个包。相反，如果一个简单的模型进行仿真，它可以检索的变量。

PS3。 我想我解决了这个问题。行model_name = 'friction1D'需要改变到model_name = 'friction1D.fricexample_1' 。基本上，它应该是<packageName>.<modelName>