Go to Post Best way to get the word out for FIRST is Demo, Demo, Demo. There's no reason anyone in your community shouldn't know what you folks are doing. - Martinez [more]
Home
Go Back   Chief Delphi > Technical > Electrical
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
  #11   Spotlight this post!  
Unread 19-02-2004, 12:49
ttedrow's Avatar
ttedrow ttedrow is offline
Herding electrons
AKA: Tim Tedrow
FRC #0281 (EnTech)
Team Role: Mentor
 
Join Date: Jan 2002
Rookie Year: 2000
Location: Greenville, SC
Posts: 165
ttedrow will become famous soon enoughttedrow will become famous soon enough
Re: Drill Motor + Gearbox + Breaker Problems

Troubleshooting this problem will be much easier if you can get you hands on a clamp- on ammeter. Check with your sponsors and mentors or find a local electrician that could help in finding one.

Put the robot on the bench with the wheel suspended. Use the ammeter to monitor the current of each drive motor. The meter should be placed between the circuit breaker and the speed controller.

Compare both sides running at the same speeds. The current should be close for both sides. There is a slight difference between forward and reverse for the drill motors.

If the current is high (> 10-15 amps) then you may have too much friction in the drive system. If the current is low on both sides, place the robot on the ground and monitor the current for each side while the robot is running straight. IF the robot is drawing much higher current when on the ground vs. the bench, look for things that might add friction when weight is added to the wheels (i.e. wheel axles).

One of these two steeps will tell you where the potential problem is located.

Tim Tedrow
__________________
Sr. Design Engineer
Caterpillar Inc.
Greenville, SC

KD4EGM

FRC 281 Greenvillains
Infected with the FIRST virus in 2000

Yes, Chute Door!!!
 


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
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
More drill motor problems, jeeze. blindguy Motors 4 12-02-2003 09:06
"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 23:43.

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