View Single Post
  #70   Spotlight this post!  
Unread 18-01-2017, 11:06
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: 658
Ari423 has much to be proud ofAri423 has much to be proud ofAri423 has much to be proud ofAri423 has much to be proud ofAri423 has much to be proud ofAri423 has much to be proud ofAri423 has much to be proud ofAri423 has much to be proud ofAri423 has much to be proud of
Re: 2017 Drive Train

Quote:
Originally Posted by Ether View Post
Would you please provide a more detailed explanation what you meant by this? i.e. How do you get from the first sentence to the second one?


The way I understand it, if you keep the gear ratio constant and lower the wheel's CoF, you lower the friction load placed on the motor (when pushing) and therefore lower the current the motor draws. If you are limiting your speed to keep the pushing current at or around 40A, gearing that would bring a traction robot to 40A should only bring a mecanum robot to around 28A. That means that you can gear the robot to go faster (i.e. draw more current for the same load) by about 140% to bring the current back to around 40A.
__________________
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