Robot climbing times

[nuggetsyl]

Originally Posted by Gregor

Okay, I'm curious now. Got any video?

http://www.youtube.com/watch?v=G0Tb4dP2RmA

[Justin Montois]

Most Teams: Can't climb to the top
Average for teams that can: 40-30 seconds
Above average: 15-20 seconds
Out of this world 5-10 seconds

4 seconds? Please.

[sanddrag]

Originally Posted by Justin Montois

4 seconds? Please.

I disagree. It's completely possible. Not easy, but definitely possible.

[F22Rapture]

Originally Posted by sanddrag

I disagree. It's completely possible. Not easy, but definitely possible.

I, for one, can't say I would choose a robot which climbed at that speed unless their mechanism was absolutely rock.expletive.solid.

As gabriel pointed out in the other thread... a single bad fall could damage the robot to the point of requiring hours of maintenance to fix... something you just don't have in finals.

Caution never killed anybody. Lack of it however...

[sanddrag]

Originally Posted by F22Rapture

I, for one, can't say I would choose a robot which climbed at that speed unless their mechanism was absolutely rock.expletive.solid

I'd think any team building a mechanism to climb that fast would have the know-how to design it in such a fashion to not break.

[DampRobot]

My bet: more often than not, robots will not be able to climb the tower. Those that can will easily take 30 seconds. The best teams in the world will get under ten. I seriously doubt that anyone will even approach 5, even if you don't count alignment time.

Remember, the hard part of deploying minibots in 2011 wasn't getting them up fast enough. It was getting them deployed quickly. A fast (and reliable) deployment was far more important that a fast climb.

Here's some more food for thought: the first seeded teams would much rather pick a slower team to climb that could always do it (low standard of deviation in score), than a robot that climbed slightly quicker, but couldn't do it sometimes (high standard deviation). Don't worry so much about speed, make a robust and easy to align lift.

[F22Rapture]

Originally Posted by sanddrag

I'd think any team building a mechanism to climb that fast would have the know-how to design it in such a fashion to not break.

I'm not so worried about the climbing part breaking, but a bent axle or sheared off wheel on a West Coast Drive is no fun to fix.

[gabrielau23]

If somebody climbs the pyramid in <5 seconds I will eat my tongue. Climbing 100" inches of tower in 4 seconds would require a robot to travel at a ludicrous 2.08 ft/s VERTICALLY WHILE CLIMBING. Ridiculous. The only way I could see something even remotely close to this is if you dedicated your robot to climbing, in which case you made your robot a box on wheels and on which your bumpers and battery weigh more than the robot itself. I'm sorry if I'm coming off harsh, but I don't think it's possible to climb a 9' ladder in 4 seconds unless you're a living organism.

[Koko Ed]

Originally Posted by nuggetsyl

Ok whats you guess on how long it will take to climb to the top of the tower?

Because of not only the need to be careful not to climb past two zones at once but also to be careful so not to have a catastrophic fall I say at the least it'll take a minute at best to make it to the top.

[pandamonium]

As long as it is under 2 minutes does time really matter?

Consistency... now that matters.

another factor is if the mechanism auto climbs or requires driver interaction.

4 seconds??? trolling???

[AndyBare]

Just going to speak my thoughts alloud, but I suppose that a robot with a drivetrain integrated to climbing up the corners could be super effective... like charzard fighting treeko

[JesseK]

We have a conceptual design that will be easy to automate. We're in the process of proofing it now. Taking away driver hesitation between tiny repeatable movements should easily shave off 5 seconds, no matter what the final motors/gears are.

[ENeyman]

Originally Posted by Hallry

I believe 341 and/or 67 might have used this strategy last year in autonomous.

Most of the time, 341 would shoot the two preloads before getting the two from the bridge. However, when against another robot who went for the bridge in auton (27, 233), they would go to the bridge first, intentionally taking the penalty.

Also, 365 would take the additional ball in auton too.

[IKE]

If we assume that the 4 seconds is a goal:
150 Lb robot = 667 N
60 Inch=1.5 meters estimated change in CG height
Time = 4 sec
667N*1.5m/4 sec = 250 Watts.

Assuming 50-75% efficient mechanism your power draw would be:
333-500 Watts.
That is a lot of power draw, but not unheard of.

[Jared Russell]

Originally Posted by gabrielau23

If somebody climbs the pyramid in <5 seconds I will eat my tongue. Climbing 100" inches of tower in 4 seconds would require a robot to travel at a ludicrous 2.08 ft/s VERTICALLY WHILE CLIMBING. Ridiculous.

http://en.wikipedia.org/wiki/Power_take-off