View Single Post
  #4   Spotlight this post!  
Unread 21-06-2013, 12:18
purduephotog purduephotog is offline
Active Defense Design Engineer
AKA: Jason
FRC #3015
Team Role: Leadership
 
Join Date: Jan 2007
Rookie Year: 2004
Location: Rochester, NY
Posts: 162
purduephotog is a jewel in the roughpurduephotog is a jewel in the roughpurduephotog is a jewel in the roughpurduephotog is a jewel in the rough
Send a message via AIM to purduephotog
Re: Real velocity Measurement Sensor

Quote:
Originally Posted by kramarczyk View Post
Have you looked into a follower wheel assembly?

http://www.chiefdelphi.com/media/photos/32440
Indeed, I have.

Many of these work only if there is no slippage, or (as in the encoders) if you aren't slipping while in a pushing match (sometimes with a wall). The followers are arguably the best solution as they can sense what your real integrated displacement is, assuming they don't slip, and with care and thought you could model most of the turns and dips.

It does require contact, however, and I think back to the "Moon" competition where we were unsure if followers would be allowed. A non-contact type sensor would be ideal- which limits you to optical, sound, or ? But then that's the problem with all sensor platforms... they must keep getting more and more complex to filter for the undesirable motions.
__________________
http://purduephotog.deviantart.com
Portrait Photography: "I used to say Immortalized in Silver, but now I say Captured and Squeezed by Electrons".
Reply With Quote