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By: kramarczyk
New: 11-27-2007 10:08 AM
Updated: 11-27-2007 10:08 AM
Total downloads: 479 times
Optimizing High Speed Ratio based upon the time required to travel a given distance.
Tuning a bot's high gear by using the elapsed time to travel a key distance. This techniques wsa thought of because that is how most races are measured... i.e. 50 yard dash. Within JVN's drivetrain calculator (http://www.chiefdelphi.com/media/papers/1469) there is a modeler that allows you to figure how long it will take your bot to reach a reference distance. By iterating with you gear ratios you can determine a minimum time to a key distance in the game.
Attached Files
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High Speed Optimization Technique
CD-20071127-Speed Optimization.xls
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uploaded: 11-27-2007 10:08 AM
filetype: xls
filesize: 1.45MB
downloads: 477
Discussion
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12-30-2009 05:16 PM
boomergeek
Re: paper: High Speed Optimization Technique
This seems to be a valuable spreadsheet for understanding movement mechanics. Thanks for sharing.
I think I did notice an error in it:
In the "AndyMark 2-speed modeling sheet" in the low-gear data: AC140 to AC590 (Robot acceleration) improperly uses that maximum acceleration data (AA column) instead of the actual acceleration data (AB column).
(the same error is in the high gear data, but high gear does not make a difference unless you use very slippery tires).
The end result is that the low gear will seem a little bit faster especially at short distances than it actually is if you try to use it with 4 CIMs instead of 2 CIMs.
Has anyone ever tried to match this simulator to actual data from live robots?
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