preferred joint movement

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juerg
Posts: 17
Joined: 12 Jan 2014, 15:32

preferred joint movement

Post by juerg » 17 Mar 2014, 19:50

Hi
in my model I have a Spherical_Basis and 3 revolute joints. When I run the simulation the Spherical_Basis rotates around the z-axis. I need however a rotation of the revolute joints in order to avoid the collisions of the <x>2 elements. The <x>2 elements will then need to be shortend.
I could not find a setting to give priority to the revolutes in favor of the z-rotation of the Spherical_Basis or avoid completely the z-rotation of it.

https://drive.google.com/folderview?id= ... sp=sharing

Juerg

coppelia
Site Admin
Posts: 7691
Joined: 14 Dec 2012, 00:25

Re: preferred joint movement

Post by coppelia » 17 Mar 2014, 23:16

Hello Juerg,

select your spherical joint (the base joint) then specify a very small IK calculation weight in the joint properties.

Cheers

juerg
Posts: 17
Joined: 12 Jan 2014, 15:32

Re: preferred joint movement

Post by juerg » 19 Mar 2014, 18:14

Perfect ! Thanks

Tried it with a change from 1.0 to 0.5 but seeing that it didn't change anything did not try smaller values! With 0.01 it looks like what I want.

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