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Unread 15-03-2010, 17:05
Frank Neuperger Frank Neuperger is offline
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Re: Team 39 building 469 stopper solution (Available in Las Vegas)

Quote:
Originally Posted by PAR_WIG1350 View Post
A loopy robot that grabs the tower higher is asking to be made into a pendulum. the worst loop bots will have multiple attachment points. Then you would have to match the resonance of the tower. <and risk field damage?>

Any tests on how tolerant the tower is to [resonant] movement with a robot locked onto it?
Both the robot director mechanism and tower move. Not at the same frequency. For resonance info , see the videos of 469. There are a couple high res videos and some really low res ones. I wish that the low res could be recoded by the person that posted them or more high res can be posted. With frame by frame playback, and knowledge of frame rate you can exactly work out the rate at which you need to deliver stimulus impulses (hits) to the bot. Getting tower into high enough amplitude resonance may be real difficult and need much more energetic impulses and risk field damage or disturbance penalty.

Smart loop bot design will isolate (not necessarily separate) the upper mechanism from the bumper section and make all of this shaker stuffharder to do.

Aloop bot grabbing high (as well as low) may get a bit of pendulum effect, but you don't care if bottom of bot is swinging (undulating not hanging) a bit more than the top mechanism as long as the ball gets guided and loses contact higher up on the mechanism where it can be moved less by resonance inducing impulses.

Clever counter measures will install a hybrid mode for the shaking of the loop bot and have a pot at the DS to adjust the frequency of the impulses. This way it is not up to the driver skill to maintain periodicity and to get the initial frequency close. Get the starting period/frequency close by analyzing video and then in game play tweak the frequency while hitting the bot with the hybrid mode shaker. Similar to the tree shakers for dropping fruit and nuts where the operator can compensate the frequency for the stiffness of tree and mass of the branches.

Reconciled that they have 20 seconds to score at the end but you can keep them out of the game as long as possible with these schemes. If the shakers work, the loop bots will have meticulous coaching to hold back those last balls a bit if they have them available. They will risk penalties for that strategy.

Last edited by Frank Neuperger : 15-03-2010 at 17:10.