the black and red cylinders in some joints separate

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ChenCh
Posts: 7
Joined: 12 Jan 2024, 08:37

the black and red cylinders in some joints separate

Post by ChenCh »

I built a six-degree of freedom robot arm model in the scene and set the angle range of each joint. After clicking the "Run" button, why did the black and red cylinders in some joints separate?

coppelia
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Posts: 10375
Joined: 14 Dec 2012, 00:25

Re: the black and red cylinders in some joints separate

Post by coppelia »

Hello,

what you describe are joints breaking apart: with most physics engines, joints are modelled as constraints. If some constraints cannot be solved properly, joints will come apart. This is not the case with the MuJoCo engine for instance (except where there are loop closures).

To remedy for joints breaking apart, you have several possibilities:
Cheers

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