20-01-2010 15:31

thefro526

Re: paper: CG Migration of Robot Crossing Bump using Powerpoint

This is an awesome resource to show younger members (and some veterans) the effect of COG on bump crossing.

I also love the humor, one of the Engineers at my job and I got quite a laugh out of the robot face plant.

Thank you.

20-01-2010 15:42

Diminish

Re: paper: CG Migration of Robot Crossing Bump using Powerpoint

Really sweet powerpoint!

Also, did you consider that the wheel base for most robots will not be so continuous? As in, there will probably be a gap in the middle (4 wheeled bot) and it would force the "crest" moment to be a lot sooner, possibly enough to get away with a high CG robot...

But I assume this was mainly for your team, and your team has chosen treads, so thanks for sharing with us!

20-01-2010 15:45

IKE

Re: paper: CG Migration of Robot Crossing Bump using Powerpoint

Quote:

Originally Posted by Diminish Really sweet powerpoint! Also, did you consider that the wheel base for most robots will not be so continuous? As in, there will probably be a gap in the middle (4 wheeled bot) and it would force the "crest" moment to be a lot sooner, possibly enough to get away with a high CG robot... But I assume this was mainly for your team, and your team has chosen treads, so thanks for sharing with us!

20-01-2010 15:48

Diminish

Re: paper: CG Migration of Robot Crossing Bump using Powerpoint

"I chose to present the tank as it has the most impressive Transistions"

Theatricality - I like it

20-01-2010 17:39

kramarczyk

Re: paper: CG Migration of Robot Crossing Bump using Powerpoint

For those that are wonder where their CG will end up, take a look at http://www.chiefdelphi.com/media/papers/2048
It allows both weight budgeting and CG estimation. You can use this to get an estimate before the CAD modeling gets too far along. 10-20 minutes spent now on budgeting can save hours (or even days) of rework.

I apologize that the user interface is not slicker and am open to suggestions for improvement.

25-01-2010 15:42

BC_caveman

Re: paper: CG Migration of Robot Crossing Bump using Powerpoint

Excellent graphical presentation. I would like to suggest a more correct terminology usage. The center of gravity does not change (unless you have moving components), the Moment of gravity is what is being depicted by the vector. This, along with center of mass, is used in aircraft and ship stability calculations also.

30-01-2010 22:55

JVN

Re: paper: CG Migration of Robot Crossing Bump using Powerpoint

Pretty cool paper. It is a great visual way to demonstrate CG. I like it.

-John