Body CS in SimMechanics
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Is it possible to have CS coordinates in a Body block of SimMechanics 1st generation, that depends from a parameter?
For example
CS1 = [L*sin(teta) L*cos(teta) 0]
Thanks for your time and help.
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Ryan G
2013년 6월 10일
Would you want that to be an input parameter or would it be fixed from the start of simulation?
답변 (2개)
Ryan G
2013년 6월 11일
Well if you change at the very start of simulation a parameter should work, where you define it in your workspace. So CS1 would be a variable, x, and CS2 would be a variable y. Where x and y are defined in your workspace.
If that doesn't work, what is the error you're seeing?
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Ryan G
2013년 6월 12일
You could try using a point curve constraint. This would allow you to define a trajectory that the other connected body is allowed to follow. There are similar blocks that may be more applicable in the constraints and drivers sublibrary.
Can you elaborate on what your design challenge is here? The current way you are trying to do this is not possible (changing CS points while simulating) but that doesn't mean there isn't a way to do it.
Marco De Simone
2013년 6월 12일
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Ryan G
2013년 6월 12일
Have you considered the gear constraint where the radius of the base would be the radius of the earth? You can also model a rolling wheel with simulink and connect the forces from rolling to the simmechanics model. If you wanted to model the actual forces of the wheel (braking/accelerating like in a car) then you would would need to model the contact friction curve as well.
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