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RMF CALCULATOR



The RMF Calculator is designed to help you decide 'is my motor strong enough for my robot?'

It is a supplement to the robot dynamics tutorial. If you do not understand how to use this calculator, please read the tutorial first.

Note that all entered values will be saved as a cookie on your computer (if you have cookies enabled) so you don't need to reenter anything on future visits.

Desired Robot Inputs:
These are the specs of your robot, defining the properties and capabilities you wish your robot to handle.


Mass		lbs kg
Desired Velocity		ft/s m/s
Desired Acceleration		ft/s^2 m/s^2
Expected Efficiency		%
Incline Angle		degrees
Wheel Diameter		feet meters
# of Powered Wheels		wheels

RMF Results:
This is the calculated output results. Notice the RMF value. This means that for your robot to accomplish your required specs above, you need to find a motor that has equal or higher RMF (see next section).


RMF		lb * ft * rps kg * m * rps
Momentum		lb * ft / s kg * m / s
Motor Rotation Speed		rps rpm

Enter Motor Characteristics:
Now we need to find a motor that has a RMF value equal or higher than the above calculated value. Now looking up your motor spec sheet ratings, fill in this below information. Remember to check the robot parts list to find and buy your motors.


Torque		lb*ft kg*m
Speed		rps rpm
Motor RMF		(as above)

Remember, your Motor RMF must be greater or equal to the Results RMF for your robot to acheive your desired specs.