Go to Post I sure hope kickoff comes soon. Otherwise, you're all getting sent for therapy ;) - Rich Kressly [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
  #15   Spotlight this post!  
Unread 09-12-2013, 18:04
AlecS AlecS is offline
Registered User
FRC #1323 (Madtown Robotics)
Team Role: Mentor
 
Join Date: May 2012
Rookie Year: 2008
Location: San Jose, CA
Posts: 66
AlecS has a reputation beyond reputeAlecS has a reputation beyond reputeAlecS has a reputation beyond reputeAlecS has a reputation beyond reputeAlecS has a reputation beyond reputeAlecS has a reputation beyond reputeAlecS has a reputation beyond reputeAlecS has a reputation beyond reputeAlecS has a reputation beyond reputeAlecS has a reputation beyond reputeAlecS has a reputation beyond repute
Re: Omni vs Mecanum CoF ?

Ah, I think I see why I was confused, The initial equation was flipped.
Intial Eq:

(Wf * 2 * pi * r)/S = (40lb * r)/Ts

Eq:

S/(Wf) = (40lb * r)/Ts

This puts actual speed above free speed, and actual torque above stall torque, like you described. The previous version was not giving useful numbers, this one does.

You also need to do some unit conversion there,

If use Stall Torque in in/lbs (21.5);

S = (Wf/(40lb/Ts))*2pi)/60/12

This equation gives ~23FPS, same as what I got above. This number would appear correct, assuming 0 losses and perfect current supply.
__________________
Alec S.
Engineer - Sales Representative, WestCoast Products || Twitter
MadTown Robotics Team 1323

Last edited by AlecS : 09-12-2013 at 18:10.
 


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 05:42.

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