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Re: pic: Magnetic traction
Quote:
Originally Posted by Richard
The steel pole is ferromagnetic, so a magnet will exert a pull toward it, aiding traction of the wheel(s).
Steel is also an electrical conductor, so electric potentials induced in it as a magnet moves will drive the flow of circulating current. Magnetic fields due to the circulating current will interact with those due to the magnet, developing a drag force that opposes the magnet's motion. So the steel pole acts as a brake on the magnet -- even if they don't touch.
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The key will be to tune the position of the magnet to provide "just enough" traction, yet not too much apparent friction.
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CalGames 2009 Autonomous Champion Award winner
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2011 Sacramento Finalist, 2011 Madtown Engineering Inspiration Award.
2012 Sacramento Semi-Finals, 2012 Sacramento Innovation in Control Award, 2012 SVR Judges Award.
2012 CalGames Autonomous Challenge Award winner ($$$).
2014 2X Rockwell Automation: Innovation in Control Award (CVR and SAC). Curie Division Gracious Professionalism Award.
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2015 Innovation in Control Award, Sacramento.
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Way to think outside the box...or circle..or triangle. - Barry Bonzack [more] 
16-01-2011, 21:19
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