Thread: Drill Motor Anti-reverse Pins...
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Unread 23-06-2002, 23:10
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#0047 (ChiefDelphi)
  
Join Date: May 2001
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Braking Torque
Posted by Dodd Stacy.

Engineer on team #95, Lebanon Robotics Team, from Lebanon High School and CRREL/CREARE.

Posted on 2/18/2000 6:12 AM MST


In Reply to: warning!! posted by Daniel on 2/18/2000 3:35 AM MST:




: If you don't have a ramped deceleration programmed in for the drill motors....you're gonna go straight to break after you stop powering the drill motor....

This reminds me of a dumb question I've been meaning to ask: Do the drill motors (or any other motors) produce more decelerating torque in the dynamic braking mode than they do in the accelerating mode?

Except for gearbox friction, etc adding to braking torque vs subtracting from accelerating torque, I can't see any reason why a motor would make a more powerful generator than it is a motor. Unless maybe the generated voltage in the dynamic braking mode is allowed to go much higher than 12V? (or the current in the windings to go much higher) Can anyone help me out with this? Thanks.

Dodd


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