我有兴趣将JModelica与我在Dymola中构建的模型一起使用。
具体来说，我有一个使用DynamicPipe组件的锅炉模型，然后我只是将热量传递到管道以加热其中的水，并使用泵组件来控制整个锅炉的压差。该模型可以很好地编译到使用JModelica的FMU，我能够毫无问题地模拟它。
但是，我现在不想找到最佳控制序列来使锅炉进入某个操作点，而这里事情就停止了。
我已经编写了一个有优化问题的 .mop 文件，但是当我调用transfer_optimization_problem时，出现以下错误：
Warning: Ignored enumeration typed variable:
eval parameter Modelica.Fluid.Types.ModelStructure boiler.boilerFMU.boiler.pipe.modelStructure = Modelica.Fluid.Types.ModelStructure.av_b "Determines whether flow or volume models are present at the ports" /* Modelica.Fluid.Types.ModelStructure.av_b */
Java error occurred:
Exception in thread "main" java.lang.UnsupportedOperationException: Cannot convert expression to MX: size(A, 1)
at org.jmodelica.optimica.compiler.FExp.toMX(FExp.java:4516)
at org.jmodelica.optimica.compiler.FMaxExp.toMX(FMaxExp.java:560)
at org.jmodelica.optimica.compiler.FExp.toMXVector(FExp.java:4497)
at org.jmodelica.optimica.compiler.FAssignStmt.updateExpressionsAccordingToStatement(FAssignStmt.java:385)
at org.jmodelica.optimica.compiler.FFunctionDecl.generateFinalExpressionVector(FFunctionDecl.java:1365)
at org.jmodelica.optimica.compiler.FFunctionDecl.toMXFunction_compute(FFunctionDecl.java:2878)
at org.jmodelica.optimica.compiler.FFunctionDecl.toMXFunction(FFunctionDecl.java:2865)
at org.jmodelica.optimica.compiler.FFunctionCall.toMXVector(FFunctionCall.java:1578)
at org.jmodelica.optimica.compiler.FFunctionCallStmt.updateExpressionsAccordingToStatement(FFunctionCallStmt.java:391)
at org.jmodelica.optimica.compiler.FFunctionDecl.generateFinalExpressionVector(FFunctionDecl.java:1365)
at org.jmodelica.optimica.compiler.FFunctionDecl.toMXFunction_compute(FFunctionDecl.java:2878)
at org.jmodelica.optimica.compiler.FFunctionDecl.toMXFunction(FFunctionDecl.java:2865)
at org.jmodelica.optimica.compiler.FFunctionCall.toMXVector(FFunctionCall.java:1578)
at org.jmodelica.optimica.compiler.FFunctionCallStmt.updateExpressionsAccordingToStatement(FFunctionCallStmt.java:391)
at org.jmodelica.optimica.compiler.FFunctionDecl.generateFinalExpressionVector(FFunctionDecl.java:1365)
at org.jmodelica.optimica.compiler.FFunctionDecl.toMXFunction_compute(FFunctionDecl.java:2878)
at org.jmodelica.optimica.compiler.FFunctionDecl.toMXFunction(FFunctionDecl.java:2865)
at org.jmodelica.optimica.compiler.FFunctionCall.toMXVector(FFunctionCall.java:1578)
at org.jmodelica.optimica.compiler.FFunctionCall.toMX(FFunctionCall.java:1562)
at org.jmodelica.optimica.compiler.FDotSubExp.toMX(FDotSubExp.java:544)
at org.jmodelica.optimica.compiler.FVariable.parameterEquationToMXBindingExpression(FVariable.java:3807)
at org.jmodelica.optimica.compiler.FVariable.findMXBindingExpressionIfPresent(FVariable.java:3770)
Traceback (most recent call last):
File "boiler_opt.py", line 89, in <module>
op = transfer_optimization_problem("BoilerOptimization.Opt", paths, compiler_log_level='error')
File "/opt/jmodelica/Python/pyjmi/casadi_interface.py", line 171, in transfer_optimization_problem
accept_model=accept_model)
File "/opt/jmodelica/Python/modelicacasadi_transfer/modelica_casadi_transfer_wrapper.py", line 156, in transfer_optimization_problem
_get_options(compiler_options), compiler_log_level)
File "/opt/jmodelica/Python/modelicacasadi_transfer/modelica_casadi_transfer_wrapper.py", line 179, in _transfer_optimica
return modelicacasadi_wrapper._transferOptimizationProblem(ocp, class_name, files, options, log_level)
File "/opt/jmodelica/Python/modelicacasadi_wrapper/modelicacasadi_wrapper.py", line 3417, in _transferOptimizationProblem
return _modelicacasadi_wrapper._transferOptimizationProblem(*args)
RuntimeError: a java error occurred; details were printed
显然，它对DynamicPipe模型中指定模型结构的枚举类型不太满意。
为了检查问题确实是我的模型，我对其进行了线性化并在优化问题中使用了线性化版本；这运行得很好。
关于如何处理这个的任何想法？:-)
问候，
乔金
更新： 我在 JModelica 论坛上问了同样的问题，得到了以下答复。但是，我还没有找到规避错误的解决方案：http ://www.jmodelica.org/27776#comment-6467