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virtual prototyping of mechatronics systems by integration of LabVIEW's Softmotion module

Question asked by Rohan Potdar on Sep 16, 2011
Latest reply on Sep 16, 2011 by Shrikant Savant

hello

 

i have designed a solidworks model of mechatronics system and i am creating a virtual prototype of it with the help of NI LabVIEW's softmotion module.

i have created a small virsion of a model as well. when i am deploying the smaller virsion of the model in labview, its working fine. the size of it is 8MB. but when i deploy the actual model which is of 58MB, it gets deployed but then when i try to control its operation through control panel of labview i recieve following error,

 

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The solver failed to converge. Possible causes are:

 

1. The solver is failing to achieve the specified accuracy. Relax the Accuracy

   setting in Motion Analysis Properties.

 

2. If parts in the model are moving quickly, evaluate the Jacobian more often.

 

3. The mechanism may be getting locked. Start the simulation with a different

   initial configuration or change your motors to get valid motion.

 

4. If the failure is happening right at the beginning of the simulation, use a

   smaller Initial Integrator Step Size.

 

5. Try to use a stiff solver like 'WSTIFF'.

 

6. Try to avoid sharp discontinuities in the model like sudden motion changes,

   force changes or mate activation/deactivation.

 

7. You may have motors with very high speeds. Try to reduce the motor speed.

 

8. Make sure that only one motor is driving a given component at any time.

 

 

You can simplify the model by combining multiple parts into rigid groups:

   Select the parts in Motion Manager Tree, right-click and choose 'Add to New Rigid Group'.

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when i spoke with LavVIEW's technical support engineer, i was told that the error is coming from solidworks and not labview.

Can anyone please tell me whats the cause of error and how do i get rid of it.

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