Thread: BACKDRIVE PLEASE HELP!!!!!
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Unread 23-06-2002, 21:58
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#0047 (ChiefDelphi)
  
Join Date: May 2001
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Re: Dynamic Braking has limits...
Posted by Nate Smith.

Other on team #66, GM Powertrain/Willow Run HS, from Eastern Michigan University and GM Powertrain.

Posted on 2/23/2000 3:25 PM MST


In Reply to: Re: Dynamic Braking has limits... posted by Thomas A. Frank on 2/23/2000 3:02 PM MST:



: But there is one limitation on dynamic braking that wasn't mentioned - it only works when the control system is communicating with the robot. At the end of the match, when control is turned off, there goes your dynamic braking.

With our winch system, which uses the dynamic braking to keep the machine from sinking to the ground, we unplugged the OI to simulate an end-of-round cutoff, with no real problems(only an inch or two of height loss, as compared to a slow, steady slide down before the braking was turned on.) Since the dynamic braking is based entirely at the speed controller, which is powered from a source other than the signal from the RC, I am assuming that the braking circuit is still active when the control system is not transmitting. As for when the system is officially disabled, i don't know, because I do not have a 'competition adaptor' to test it with. Will have to find out at Great Lakes...

Nate

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