Go to Post That's some sexy use of aluminium - Bharat Nain [more]
Home
Go Back   Chief Delphi > Old Forum Archives > 2001
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
  #2   Spotlight this post!  
Unread 24-06-2002, 00:20
archiver archiver is offline
Forum Archival System
#0047 (ChiefDelphi)
 
Join Date: May 2001
Location: Pontiac, MI
Posts: 21,214
archiver has a reputation beyond reputearchiver has a reputation beyond reputearchiver has a reputation beyond reputearchiver has a reputation beyond reputearchiver has a reputation beyond reputearchiver has a reputation beyond reputearchiver has a reputation beyond reputearchiver has a reputation beyond reputearchiver has a reputation beyond reputearchiver has a reputation beyond reputearchiver has a reputation beyond repute
Re: Difference in forward/reverse drill motor speed

Posted by Matt Leese at 2/6/2001 12:10 AM EST


Other on team #73, Tigerbolt, from Edison Technical HS and Alstom & Rochester Institute of Technology.


In Reply to: Difference in forward/reverse drill motor speed
Posted by Patrick Dingle on 2/5/2001 11:38 PM EST:



Yep, noticed this one awhile ago. You can work around it several ways. The more correct solution (i.e. the mechanical one) is to either mount the drill motors turning the same direction or put an extra gear in one side so they both turn the same direction. The less correct solution (i.e. the programming one -- Matt's Law: never fix something in programming if it can be done mechanically) is to wire a potentiameter onto the control system that will scale down one of the drive PWM outputs. You then drive the robot over a distance and fiddle with the pot until you get the robot driving in a straight line. This does lower the overall top speed of the robot however (you have to scale down the motor turning the forward direction). This takes a little bit of finesse to get right and careful drivers who don't bump the pot. It worked fairly well for us last year but there are a few caveats that I'll let you figure out on your own (hint: it has to do with driving in reverse).

Matt


__________________
This message was archived from an earlier forum system. Some information may have been left out. Start new discussion in the current forums, and refer back to these threads when necessary.
 


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 Off
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Portable cordless drill press Gui Cavalcanti Technical Discussion 25 03-08-2003 22:21
drill motor mounts- again Jeff Sharpe Motors 6 07-04-2003 23:20
Emergency drill trade/sell Anarkissed General Forum 3 16-02-2003 22:37
Forward/Reverse difference in drill motors. archiver 2001 15 24-06-2002 02:38
"Motors and Drive train edition" of Fresh From the Forum Ken Leung CD Forum Support 6 29-01-2002 12:32


All times are GMT -5. The time now is 08:58.

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