How to specify specific motion on sim Mechanics 2nd gen

Hi,

On 2nd gen, is it possible to make a geometry move a certain distance and then stop there?

I.e a cylinder move 5m on the x axis and then becomes attached to a world frame.

Is that possible?

Thanks

[David Chiu]

Thanks for your quick answer, the blog is helpful but what I am looking for is my model auto computes position with forces to get to an equilibrium position, and then move it to the right 5 meters. Is there any tool that does this?

Thanks in advance David

[Sebastian Castro]

You mean like a controller that applies forces to move the geometry move to a reference distance? Sure.

You could measure the joint's position, place that measurement in a feedback loop, and apply it back as a force. Here's a simple example:

- Sebastian

Answer 1

[Sebastian Castro]

Motion actuation is possible in R2013b and later. For what you described, this would be a ramp from 0 to 5m which stays constant at 5 after that.

I like how this blog explains it: http://blogs.mathworks.com/seth/2013/11/13/motion-actuation-in-simmechanics-r2013b/

- Sebastian