strange behavior on a prismatic joint

Report crashes, strange behaviour, or apparent bugs
Post Reply
junior bleunven
Posts: 3
Joined: 13 Aug 2019, 16:20

strange behavior on a prismatic joint

Post by junior bleunven » 13 Aug 2019, 16:27

Hi all,
I'm working on dynamic modeling of a custom made robot. I've imported a simplified urdf filed which seems cleen but I got a really strange behavior on a prismatic joint:
https://youtu.be/tBVxMwTZzhw
Does anyone has an idea of what went wrong?
Thx,
Blaise

coppelia
Site Admin
Posts: 7229
Joined: 14 Dec 2012, 00:25

Re: strange behavior on a prismatic joint

Post by coppelia » 15 Aug 2019, 05:41

Hello Blaise,

what physics engine are you using? This is very probably due to an unbalanced mass/inertia situation. Make sure to carefully read design considerations 7-8 on this page.

Cheers

junior bleunven
Posts: 3
Joined: 13 Aug 2019, 16:20

Re: strange behavior on a prismatic joint

Post by junior bleunven » 15 Aug 2019, 09:58

Thanks for your reply,
Now I rememeber having same issue regarding unbalanced inertia caused by solidworks when I was exporting on simscape Matlab

Post Reply