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Unread 13-02-2011, 13:36
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Ether Ether is offline
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Re: Will victor's break mode destroy gear box?

Quote:
Originally Posted by Trevor1743 View Post
So your saying that if we are standing still and a robot with a higher pushing force starts to push us we will push back until they reach a pushing force equal to our maximum pushing force. At which point we will be pushed backwards and our motors will stop working because we would have reached the motor braking torque.
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.