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Unread 02-01-2016, 22:46
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AKA: Gus Michel II
FRC #3946 (Tiger Robotics)
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Re: 6 CIM robo-rio brown out

Quote:
Originally Posted by Joe Ross View Post
I don't disagree that this is what happens in the really badly wired / really badly geared / really old battery cases, but I don't think this is the normal case. Certainly, our robot didn't experience that in real competition (although did in extended pratice). Rather the robot gets started moving, browns out, and starts again, however since there is already motion, the inrush current is less and it breaks the loop.
In the interest of full disclosure, we encountered the "stutter" we encountered was experienced when running longer than 3 minutes, either in driver practice or at a demo. To the assertion that the behavior in the first 3 minutes is "it browns out, but by the time it comes back, its OK", I have to express a healthy dose of skepticism. If that's what actually happens, then the old truism "A difference that makes no difference is no difference" applies. I suspect that we'll end up simulating some pushing matches this year to find out for ourselves.
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