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Unread 15-12-2011, 14:05
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JesseK JesseK is offline
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Re: pic: Wide base robot CAD

Quote:
Originally Posted by Ether View Post

How much less motor torque does it take to just start rotating a wide trackwidth 4-wheel robot compared to a long wheelbase robot (all other things being equal). Say 30"x24" compared to 24"x30". Does anybody have any data?


My tool bases its equations off of another spreadsheet that broke down the equations in this whitepaper:

http://www.chiefdelphi.com/media/papers/1443

There's an equation at the very end to determine IF a robot will turn (Torque available > Torque Required) that's useful. Problem is, it's also dependent upon the X & Y locations of the center of gravity. To hold everything but the wheelbase itself equal, the c.g. placement would have to be the same proportional distance between the center of area and the edges of the wheelbase rather than the same precise distance.
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Last edited by JesseK : 15-12-2011 at 14:13.
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