View Single Post
  #10   Spotlight this post!  
Unread 13-02-2011, 13:49
Trevor1743 Trevor1743 is offline
Registered User
FRC #1743
 
Join Date: Jan 2011
Location: pittsburgh
Posts: 22
Trevor1743 is an unknown quantity at this point
Re: Will victor's break mode destroy gear box?

Quote:
Originally Posted by Ether View Post
Sorry, I can't untangle that sentence.

A spinning motor with its leads shorted generates braking torque proportional to its speed. In fact, the braking torque follows the motor's speed-torque curve... with the stall torque and zero swapped, of course: at zero speed there is zero braking torque, and at rated free speed the braking torque is the same as the rated stall torque.

Sorry about that.

The order of events which I was trying to express are:
  1. Our robot's sitting still.
  2. Another robot begins to push our robot.
  3. The other robot which is geared to push better then our robot over powers our motors
  4. We get pushed backwords
At this point are our motors broken or not?

Based on Jeffys response:
Quote:
Your motors would have to reach free speed and in that case, you are already being pushed faster than your motors maximum speed.

BRAKE mode won't BREAK your motors, and it won't keep you from being pushed, but it will drive a little bit different, and resisit slight bumps from other robots.

It does not seem that we will have to fear about our motors breaking.


Thank you for all of the help.

Last edited by Trevor1743 : 13-02-2011 at 14:26.