View Single Post
  #39   Spotlight this post!  
Unread 29-11-2016, 19:58
Ari423's Avatar
Ari423 Ari423 is offline
LabVIEW aficionado and robot addict
AKA: The guy with the yellow hat
FRC #5987 (Galaxia)
Team Role: Mentor
 
Join Date: Mar 2015
Rookie Year: 2012
Location: Haifa, Israel
Posts: 540
Ari423 has a brilliant futureAri423 has a brilliant futureAri423 has a brilliant futureAri423 has a brilliant futureAri423 has a brilliant futureAri423 has a brilliant futureAri423 has a brilliant futureAri423 has a brilliant futureAri423 has a brilliant futureAri423 has a brilliant futureAri423 has a brilliant future
Re: pic: 3 wheel omni drive concept

Quote:
Originally Posted by s_forbes View Post
I like the idea of using the self-righting mechanisms as the brake for falling, it gives them multiple functions. I don't think the versaplanetary would like being slammed over and over again though. It probably would need a damping method between the end of the arm and the gearbox, or we would have to invest globs of money into spare versaplanetary stages.

I thought about several ways to implement this, and I think this is one of the better ways. Using a rear mountain bike shock on an additional joint on the self righting arm gives it damping ability, and is pretty adjustable. It looks like some air shocks have the ability to adjust the spring force (by varying the air pressure) and the damping coefficient, so it could likely be optimized to get rid of all of the bouncing after falling over. Pretty nifty!

Is the plan to have the self-righting mechanisms only attached to the chassis through a single cantilevered shaft or is there something else not yet modeled? Because if so, that's a lot of force going through a cantilevered shaft, especially one only attached to a single piece of wood (again, not bashing wood; I would be sceptical with it only going through a single piece of sheet metal too).
__________________
2017-present: Mentor FRC 5987
2017-present: CSA for FIRST in Israel
2012-2016: Member FRC 423
2013: Programmer
2014: Head Programmer, Wiring
2015: Head Programmer, Wiring
2016: Captain, Head Programmer, Wiring, Manipulator, Chassis, CAD, Business, Outreach (basically everything)


Reply With Quote