View Single Post
  #2   Spotlight this post!  
Unread 20-05-2014, 01:51
DampRobot's Avatar
DampRobot DampRobot is offline
Physics Major
AKA: Roger Romani
FRC #0100 (The Wildhats) and FRC#971 (Spartan Robotics)
Team Role: College Student
 
Join Date: Jan 2012
Rookie Year: 2010
Location: Stanford University
Posts: 1,277
DampRobot has a reputation beyond reputeDampRobot has a reputation beyond reputeDampRobot has a reputation beyond reputeDampRobot has a reputation beyond reputeDampRobot has a reputation beyond reputeDampRobot has a reputation beyond reputeDampRobot has a reputation beyond reputeDampRobot has a reputation beyond reputeDampRobot has a reputation beyond reputeDampRobot has a reputation beyond reputeDampRobot has a reputation beyond repute
Re: motor Ke and Kt Quiz

Quote:
Originally Posted by DonRotolo View Post
I think it will also help to know
Ke = Motor Voltage constant
Kt = Motor Torque constant

In theory, Kt = Ke * (some constant)
(The value of the constant depends upon the units used).
Could you (or someone else) give an example of how Ke and Kt are used? Whenever I've wants to do motor calculations, I've just assumed free speed directly varied with voltage, that current drawn=free current + (free current-stall current)*(torque load on motor/stall torque), and power=voltage*current=Speed*torque/efficiency. Those have basically gotten me where I've needed to go in terms of motor calcs. Where does Ke and Kt come into play?
__________________
The mind is not a vessel to be filled, but a fire to be lighted.

-Plutarch