Go to Post ... we are really in FIRST to develop a love and appreciation for Math, Science, and Technology. This is our goal. Every team can do this effectively regardless of how well they do in competitions. - tennispro9911 [more]
Home
Go Back   Chief Delphi > ChiefDelphi.com Website > Extra 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
  #4   Spotlight this post!  
Unread 13-01-2009, 14:48
Tristan Lall's Avatar
Tristan Lall Tristan Lall is offline
Registered User
FRC #0188 (Woburn Robotics)
 
Join Date: Aug 2001
Rookie Year: 1999
Location: Toronto, ON
Posts: 2,484
Tristan Lall has a reputation beyond reputeTristan Lall has a reputation beyond reputeTristan Lall has a reputation beyond reputeTristan Lall has a reputation beyond reputeTristan Lall has a reputation beyond reputeTristan Lall has a reputation beyond reputeTristan Lall has a reputation beyond reputeTristan Lall has a reputation beyond reputeTristan Lall has a reputation beyond reputeTristan Lall has a reputation beyond reputeTristan Lall has a reputation beyond repute
Re: paper: 2009 Motor Data

The RS-545 data there is for an older motor supplied by Mabuchi. The 2009 RS-545 motor is similar-looking, but not manufactured by Mabuchi, and has different specifications.

Also, I was playing with the spreadsheet, and noticed that the "At max. efficiency", "Normal rated load", and "At max. power" rows don't do anything, and actually only contain information for one particular motor.

And I'm not exactly sure what's going on here, because BaneBots lists Kv = 1400 rev/(min·V), which works out to Ke = 0.00682 V·s/rad. The spreadsheet calculates Kv = 0.006529 V·s/rad. Similarly, BaneBots quotes Kt = 0.0079 N·m/A, while the spreadsheet returns Kt = 0.00581 N·m/A. (These constants affect pretty much everything.) I had a quick look at Mark's math, and it looks right, so I'd have to guess that BaneBots may not have the correct values for something. (But are their given speeds, currents, etc. correct, or their constants?)
Reply With Quote
 


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

Similar Threads
Thread Thread Starter Forum Replies Last Post
paper: 2009 Lunacy Scoring Spreadsheet cbudrecki Extra Discussion 7 12-01-2009 00:04
Interpreting motor data John Gutmann Motors 6 21-03-2007 09:55
Small and Large CIM Motor Data Danny Diaz National Instruments LabVIEW and Data Acquisition 0 23-02-2006 03:26
White Paper Discuss: Approx. Motor Spec for Taigene Motor Joe Johnson Motors 2 22-01-2005 16:36
White Paper Discuss: Karthik's Championship Event Data CD47-Bot Extra Discussion 20 13-04-2004 08:17


All times are GMT -5. The time now is 21:14.

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