How can i add a Common Gear Constraint to my simscape imported CAD?
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Hi, well i have the following CAD that is part of a simple planetary gear
Since simscape multibody link does not support the gear mates i remove it from the CAD and export it successfully, but in Simscape i run into the following problem
As you can see the "planet" gear is going through the solar gear, that is why i require a Common Gear Constraint block between both gears, but to be honest i don't know where to put it in this diagram that simscape generated:
I tried putting it between the Fs of Revolute1 and Revolute2
but it generates the following error
=== Simulation (Elapsed: 0.455 sec) ===
Error:['Ensamblajesinbrazonirela']: The following errors were found in the model Ensamblajesinbrazonirela.
Caused by:
['Ensamblajesinbrazonirela']: Common Gear Constraint 'Ensamblajesinbrazonirela/Common Gear Constraint' has base and follower ports that are rigidly connected. You can configure this diagnostic in the Simscape Multibody Configuration Parameters dialog.
['Ensamblajesinbrazonirela/Solver Configuration']: *** Model not assembled: position violation *** Resolve this issue in order to simulate the model.
when i dissable the option it names about "Rigidly constrained block" in model settings > simscape Multibody>Diagnostics>Rigidly constrained block >none the following error shows up
=== Simulation (Elapsed: 0.358 sec) ===
Error:['Ensamblajesinbrazonirela']: The following errors were found in the model Ensamblajesinbrazonirela.
Caused by:
['Ensamblajesinbrazonirela/Solver Configuration']: *** Model not assembled: position violation *** Resolve this issue in order to simulate the model.
i tried to solve it by changing the Solver Configuration consistency tolerance to 1, insted of 1e-9 that is by deffault, but then the planet gear goes through the solar gear, again.
The example given by my teacher was just a simple pendulum made in CAD an imported to have its position controlled, without any gear mates or "complex" relations. Help me please.
*Later i need to input a torque in the solar gear in order to control it, but i think i got that part of the explanation.
**This is not my native language i am sorry if i committed some sort of grammar / traduction mistake.
1 Commento
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il 19 Mag 2023
Hi,there is a similar question about adding a Common Gear Constraint to my simscape about gear pump.
The positions of two gears and shafts are changed,not on the same plane .
How do I set them to change the positions as before?
Risposte (1)
Steve Miller
il 12 Set 2021
You are on the right track. To fix your model, you will need to
- Adjust the connections of the gear constraint - they need to be attached to the frames that can rotate, so the other side of the revolute joints
- Verify that the frames of puente_1_RIGID are properly positioned
The documentation for the Common Gear Constraint block has images that help you understand how to connect this block.
--Steve
1 Commento
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il 19 Mag 2023
There is a similar question about adding a Common Gear Constraint to my simscape about gear pump.
I use Rigid Transform to correct the positions.but it generates the following error.
The following errors were found in the model aa.
['aa/Solver Configuration']: *** Model not assembled: position violation *** Resolve this issue in order to simulate the model.
Later,I try to change the center distance from Common Gear Constraint ,but nothing is changed.
I find adding a Common Gear Constraint is only changed the positions of gears and shafts.....
How should I do to solve it?
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