Go to Post from time to time, we all need a good smack to make us see when we screwed up and did something we shouldn't have. - Andrew Schreiber [more]
Home
Go Back   Chief Delphi > Technical > Electrical > CAN
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
  #17   Spotlight this post!  
Unread 04-03-2012, 19:27
techhelpbb's Avatar
techhelpbb techhelpbb is offline
Registered User
FRC #0011 (MORT - Team 11)
Team Role: Mentor
 
Join Date: Nov 2010
Rookie Year: 1997
Location: New Jersey
Posts: 1,624
techhelpbb has a reputation beyond reputetechhelpbb has a reputation beyond reputetechhelpbb has a reputation beyond reputetechhelpbb has a reputation beyond reputetechhelpbb has a reputation beyond reputetechhelpbb has a reputation beyond reputetechhelpbb has a reputation beyond reputetechhelpbb has a reputation beyond reputetechhelpbb has a reputation beyond reputetechhelpbb has a reputation beyond reputetechhelpbb has a reputation beyond repute
Re: Your take on CAN...

Quote:
Originally Posted by mikets View Post
Correct me if I am wrong. If the cause is really over current (not because of loose wires etc) and the breakers got cut off, your robot will be cut out no matter if you are using Jaguars or Victors (CAN or PWM for Jaguars). The only difference between Jaguars and Victrors (or CAN vs PWM) is that when the breaker resets, Victors (and Jaguars with PWM) will work again versus Jaguar with CAN may not work because its configuration has been cleared by the "brownout". If that is really the cause, software may be able to help to recover by detecting brownout and reconfiguring the Jaguars if necessary.
I really do like this effort and the value it adds.

However, there is a slight catch. If the system often browns-out the problem will degrade the battery charge and possibly the battery life.

So this is absolutely great for situations where something unusual happens and the drive train is operating within a reasonable range, but it's no fix for a drive train that often draws too much current under normal operation. If a drive train can't move forward on a flat rug surface without any interference and without flowing 60A all this will do is buy you a little time. Maybe you can use it to extend things to the end of a match for a design pushing just past the limit but it'll have consequences later.
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


All times are GMT -5. The time now is 01:58.

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