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Unread 30-04-2015, 23:44
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Jack of all trades, Master of none
AKA: Brian Wagg
FRC #2386 (Trojans)
Team Role: Alumni
 
Join Date: Jan 2013
Rookie Year: 2012
Location: Burlington, Ontario
Posts: 319
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Re: Localization of A Omni-Directional Robot

Quote:
Originally Posted by AlexanderTheOK View Post
Well first of all, what is your issue with simply putting encoders on all four of your wheels?
The biggest issue with this method is wheel slippage. Say I accelerate to quickly, or I get into a pushing match and my wheels start to spin because they lost traction. All of a sudden my robot thinks it's 5 feet further forward than it actually is. By getting feedback from unpowered wheels or a laser, you know that whatever movement you detect should in theory be the exact actual movement of your robot.