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[DPRG] Motor Control

Subject: [DPRG] Motor Control
From: -Old Dog- puppy_dog500 at yahoo.com
Date: Tue Aug 28 19:05:20 CDT 2007

(posted on behalf of William)
From: Will Kuhnle  972=853-2840
Date: Tue 8-28-07

I have no experience, but based on some simple theory,
I believe that the 800 pound load will require a
gearmotor that can supply 84 foot-pounds of torque at
all speeds from zero to 2 RPM.  This assumes that the
load is uniformly distributed throughout the 4 ft
radius disk; that the acceleration is constant
(constant torque) from 0 to 2 RPM; that the power
required to accelerate the motor armature/rotor
inertia equals that required by the load; and includes
no alowance for load friction.  The 600 pound load
would require about 40 foot-pounds.

William Kuhnle
>>I am trying to determine the size of 2 motors with
the following criteria.
>>
>>1. Will need to rotate a weight of about 600 lbs.
evenly distributed with a  maximum distance from
center of 2 feet.
>>
>>2. The motor will need to rotate a weight of about
800 lbs. evenly distributed with a maximum distance
from center of 4 feet.


       
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