25-01-2010 12:12

gblake

Re: pic: Robot Bump Analysis

Do you have a graph or another sort of worst/best case comparison graphic that would illustrate the difference in the path/orientation of the body of the robot when it is equipped with the pivoting wheels vs single wheels at the pivot points?

Maybe a graph of degrees of tilt vs the location of the CG (projected onto the floor) as it moves from one side of the bump to another?

That would really ice the cake for folks who want to make a comparison.

Blake

25-01-2010 13:54

JesseK

Re: pic: Robot Bump Analysis

Quote:

Originally Posted by gblake Do you have a graph or another sort of worst/best case comparison graphic that would illustrate the difference in the path/orientation of the body of the robot when it is equipped with the pivoting wheels vs single wheels at the pivot points? Maybe a graph of degrees of tilt vs the location of the CG (projected onto the floor) as it moves from one side of the bump to another? That would really ice the cake for folks who want to make a comparison. Blake

25-01-2010 15:29

Tanner

Re: pic: Robot Bump Analysis

What'd you make those models with? They're quite nifty.

Our team thought of another way using Inventor models of the bump and various robot designs and printing the bump on paper while the robot designs on transparencies. Not exactly rocket science, but our team members seemed to like the new perspective.

I wish I could find a nice way to do dimensionally correct physical simulations, but I can't really find any.

-Tanner

25-01-2010 15:38

sanddrag

Re: pic: Robot Bump Analysis

All you need is a 2D CAD sketch with proper tangent constraints. Then you can drag it around, change dimensions, and see if you'll hit.

26-01-2010 14:16

wilsonmw04

Re: pic: Robot Bump Analysis

Google Sketch Up would do this for you.