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#1
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Re: Most matches for a robot?
Yes, this is about a single robot and its wear and tear. Still looking to see if anyone has more than 151.
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#2
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Re: Most matches for a robot?
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How many of these great teams took their "originally designed/fabricated structures" from stop build; to first match to test the length of the season (off-season events)..? |
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#3
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Re: Most matches for a robot?
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#4
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Re: Most matches for a robot?
The degeneration is real. At New England District Championships in 2014, 195 was performing at its peak during quals. Once elims came around (somewhere around match 80-85 of the season), anything that could've gone wrong on the robot, did go wrong. Some of the problems still weren't solved by the end of Worlds. A lot of the moving parts were completely replaced for off-season, but the robot never performed the same again.
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#5
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Re: Most matches for a robot?
This is a very important part of scouting, especially at events like a District Championship or Worlds. A robot could have done great all season long, but halfway through a third or fourth competition, the continuous wear and tear shows. I have noticed this multiple times in the past two years, even more so with Aerial Assist.
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#6
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Re: Most matches for a robot?
I believe I have told this one before on CD (and I have bored many in person), but I think it is a good story relative to this thread.
In 2007, for 33, we designed super light due to all the structure. Estimated the cycle count for the arm as about 10 cycles per match time 20 matches per event times 5 events (3 regionals, Worlds, and IRI) or about 1,000 cycles. For aluminum, this is designing just a bit past yield, but not too terrible much. Operation wise, this would be 2 minutes x 100 matches or about 3-4 hours of match play (180-240 minutes). We built a practice bot with similar structure. This bot self-destructed after about 10 hours of practice. It was structural fatigue of some of the main arm elements. Absolutely catastrophic. Because of this, we made some fix-it parts during one of the fix it windows in case such a failure occurred at Worlds. End of the day, the robot made it all the way through regular season*, IRI, Kettering Kick-off and then was on display at the YES expo doing match after match until it too self destructed. When we tallied it up, (TBA shows 68 matches), but the robot likely saw close to those 100 matches, or about 3.5 hours of match play. Plus a few hours of practice/test/tune cycling plus about 1/2 day of playing with at YES expo (probably another 3 hours of operation/cycling). IE it also failed at about 10 hours of operation. Once switching to districts, the match count just about doubles, and the potential for practice hours can be quite high with unbag time. Basically, you can't play with the fatigue limits nearly as much as you "yusta-could". *We did fatigue one piece a couple times during season where the claw connected with the wrist. the issue with that piece was it had a lot of welding which lost the temper of the Aluminum, and it would yield when the arm would occasionally whack itself on the ground. We had a failure right before alliance selection at Detroit that year, and it had to be replaced. |
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#7
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Re: Most matches for a robot?
I should mention that Becca's frame was broken in the finals of the very first regional at Inland Empire (and lost a few plastic arms along the way starting at Chezy Champs).
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#8
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Re: Most matches for a robot?
There is kind of a 'slippery slope' from just official matches, to also off-season events, to also practice matches at official events, to also practice time. Honestly though, I have no good estimate for how many practice matches we played and how much practice time was on our 'competition' robot vs our 'practice' robot.
This was a great (boring?) season for our team in the pits... Early on we had to add/adjust a few things to tighten our elevator belts, but once tensioned at UMass Dartmouth correctly they were good. After that it was really just the additional features we added. It sounds like you remember our 2008 season? Wear was hardly a concern for our robot(s) that year, though... |
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#9
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Re: Most matches for a robot?
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#10
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Re: Most matches for a robot?
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#11
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Re: Most matches for a robot?
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Last edited by Andrew Schreiber : 17-11-2015 at 13:13. |
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#12
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Re: Most matches for a robot?
Team #1768 played about 75 matches total during the 2015 season. 60 during the official season and about 15 at 1 off season event.
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