Go to Post See, another reason for going--you can find out your chances of being thrown off the field for a safety violation! - EricH [more]
Home
Go Back   Chief Delphi > Technical > Technical Discussion
CD-Media   CD-Spy  
portal register members calendar search Today's Posts Mark Forums Read FAQ rules

 
 
 
Thread Tools Rate Thread Display Modes
Prev Previous Post   Next Post Next
  #7   Spotlight this post!  
Unread 30-12-2011, 14:53
Andrew Schreiber Andrew Schreiber is offline
Joining the 900 Meme Team
FRC #0079
 
Join Date: Jan 2005
Rookie Year: 2000
Location: Misplaced Michigander
Posts: 4,075
Andrew Schreiber has a reputation beyond reputeAndrew Schreiber has a reputation beyond reputeAndrew Schreiber has a reputation beyond reputeAndrew Schreiber has a reputation beyond reputeAndrew Schreiber has a reputation beyond reputeAndrew Schreiber has a reputation beyond reputeAndrew Schreiber has a reputation beyond reputeAndrew Schreiber has a reputation beyond reputeAndrew Schreiber has a reputation beyond reputeAndrew Schreiber has a reputation beyond reputeAndrew Schreiber has a reputation beyond repute
Re: Custom Frame

Quote:
Originally Posted by squirrel View Post
Mecanum wheels don't like a stiff frame, flexibility is good. They need all the wheels on the floor all the time, or they go off in strange directions.
Quoted for great truthiness.

Mecanum wheels rely on the fact the wheels produce forces in differing directions. These add up to get the desired motion. If you have different weight on each wheel (as you would with a stiff frame on a non-flat surface) you will get drastically changing behavior. It is the same reason you want to ensure that your CG is as balanced as possible as well.

There should be ways of compensating for different loading on your wheels, probably even doing so dynamically by placing load cells above wheel pods but it is hard math for me*. I find it simpler to just let it be sloppy and loose and be careful with my CG.

*I'm sure Ether will come in here and show me an elegant way of doing this but to me it is hard math.
__________________




.
 


Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 08:05.

The Chief Delphi Forums are sponsored by Innovation First International, Inc.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright © Chief Delphi