On 9/9/2015 6:55 AM, andy pugh wrote: > On 9 September 2015 at 11:53, John Thornton <[email protected]> wrote: >> I need to calculate the power needed to move a gantry. I assume that >> mass and velocity and acceleration are the key factors. Knowing those >> how do you figure out the watts needed. > If you can bear to work in metric... > > Power = Force x Velocity > Force = Mass x Acceleration. > > So, Max Power = Max Accel (m/s2) * Max Velocity (m/s) * Mass (kg) Watts > You will need to put in an efficiency of about 80% for the power transmission, and you will need a safety factor of at least 2 to allow the servo system to lead lag the actual commanded max acceleration.
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