SimMechanics™ and PTC Creo CAD imports

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hal9k 2014-5-20

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/130275-simmechanics-and-ptc-creo-cad-imports

评论： Xing gao 2014-5-21

Hi, I am trying to follow the tutorial as described in "http://www.mathworks.com/help/physmod/sm/ug/import-robot-arm-model.html". I managed to install everything without any problem. But after I exported the model, I am able to see the block but Mechanics Explorer is unresponsive and blank all the time. I made sure that all the stl files were there as well. The command window also displays about 3 pages of error. The first few lines looks like this

"Warning: Using a default value of 0.2 for maximum step size. The simulation step size will be equal to or less than this value. You can disable this diagnostic by setting 'Automatic solver parameter selection' diagnostic to 'none' in the Diagnostics page of the configuration parameters dialog Exception in thread "AWT-EventQueue-0" javax.media.opengl.GLException: Error making context current: 2001 at com.sun.opengl.impl.windows.WindowsGLContext.makeCurrentImpl(WindowsGLContext.java:169) at com.sun.opengl.impl.windows.WindowsOnscreenGLContext.makeCurrentImpl(WindowsOnscreenGLContext.java:66) at com.sun.opengl.impl.GLContextImpl.makeCurrent(GLContextImpl.java:134)...........

and so on. I don't know if Java has anything to do with it but I have also made sure that my Java is up to date.

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hal9k 2014-5-20

TUTORIALS.zip

Hi Xing, The answer to q1 and 2 is yes. I am trying to follow the tutorials from Mathworks website. My SimMechanics is version 4.2 so I downloaded the SimMechanics Link version 4.2. My MATLAB is ver R2013a. The files I am trying to use are the same as you mentioned (\matlab\toolbox\physmod\smlink\smlinkdemos\proe). I was able to install the SimMechanics Link and I am using ProEngineer WF5 to convert that to .xml file. I made sure that all the corresponding .stl files are stored at the same folder. Once I did that I imported the model and tried to compile/update the model (Ctrl+D). But then I get a lengthy error message in the command window. Also the Mechanics Explorer is unresponsive. I have attached all the files in the zip folder to this message. Thanks. >smimport('ROBOT.xml')

%%%ERROR MESSAGE IN COMMAND WINDOW ONCE I PRESS CTRL+D OR WHEN I RUN THE SIMULATION%%%

Warning: Using a default value of 0.2 for maximum step size. The simulation step size will be equal to or less than this value. You can disable this diagnostic by setting 'Automatic solver parameter selection' diagnostic to 'none' in the Diagnostics page of the configuration parameters dialog Exception in thread "AWT-EventQueue-0" javax.media.opengl.GLException: Error making context current: 2001 at com.sun.opengl.impl.windows.WindowsGLContext.makeCurrentImpl(WindowsGLContext.java:169) at com.sun.opengl.impl.windows.WindowsOnscreenGLContext.makeCurrentImpl(WindowsOnscreenGLContext.java:66) at com.sun.opengl.impl.GLContextImpl.makeCurrent(GLContextImpl.java:134) at com.sun.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:182) at javax.media.opengl.GLCanvas.maybeDoSingleThreadedWorkaround(GLCanvas.java:412) at javax.media.opengl.GLCanvas.display(GLCanvas.java:244) at javax.media.opengl.GLCanvas.paint(GLCanvas.java:277) at sun.awt.RepaintArea.paintComponent(Unknown Source) at sun.awt.RepaintArea.paint(Unknown Source) at sun.awt.windows.WComponentPeer.handleEvent(Unknown Source) at java.awt.Component.dispatchEventImpl(Unknown Source) at java.awt.Component.dispatchEvent(Unknown Source) at java.awt.EventQueue.dispatchEvent(Unknown Source) at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.run(Unknown Source)

hal9k 2014-5-21

编辑：hal9k 2014-5-21

Hi Xing,

Thank you so much for your answers. I figured out that the problem was due to some JAVA related inconsistencies. When I tested from my browser (chrome) it was still showing that I was using the most recent Java. Anyways I decided to uninstall and re-install it just to see what would happen.

First I uninstalled Java completely from the control panel. Then I installed the Java from chrome (chromeinstall-7u55.exe), but when I ran the .xml files I got the same errors. Then I uninstalled it and re-installed the Java 64 bit (jre-7u55-windows-x64). When I ran the xml files, they worked like a charm.

Although I still don't know the exact reason, I think it has something to do with the compatibility between 32 bit and 64 bit Java versions that was causing the whole problem.

Xing gao 2014-5-21