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Interface Specifications
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MembraneKapton
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Assumed Tension150N
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Acceleration Time1s
arbitrary, time to 100 RPM
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RPM100RPM
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Angular Acceleration10.47197551rad/s^2
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Central (Double) Coil
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Density of Plate2700kg/m^3
density of 6061 Aluminum
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Density of Cylinder2700kg/m^3
density of 6061 Aluminum
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Plate Diameter0.3556m
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Plate Thickness0.0127m
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Plate MOI0.05382876163kg*m^2
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Cylinder Diameter0.1m
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Cylinder Length0.12m
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Distance btw Cylinders0.096m
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Single Cylinder MOI0.009043828436kg*m^2
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Load MOI0.0719164185kg*m^2
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Rotor MOI0.000025kg*m^2
Ratio of Load to Rotor MOI =
2876.65674
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Combined MOI0.0719414185kg*m^2
equal to MOI of rotor + MOI of plate + 2 x MOI of cylinder (w parallel axis thm)
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Acceleration Torque0.7533687729N*m
MOI is only relevant when calculating acceleration torque, not load torque
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Membrane Torque Radius0.098m
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Max Relative Angle90degrees
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Load Torque29.4N*m
load torque only depends tension in membrane and radius of coil (running at constant speed so no angular acceleration)
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Max Combined Torque30.15336877N*m
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Safety Factor (SF)1.2
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Max Torque w SF36.18404253N*m
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320.2541052in*lb
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Tensioners
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Load MOI (from CAD)416.12626kg*mm^2
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0.00041612626kg*m^2
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Rotor MOI0.000000498kg*m^2
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Combined MOI0.02982252826kg*m^2
moment of inertia depends on the gear ratio?
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Acceleration Torque0.3123007856N*m
not sure if the RPM and acceleration time make this negligible, but adding it just in case
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Membrane Torque Radius0.018m
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Max Relative Angle90degrees
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Load Torque2.7N*m
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Max Combined Torque3.012300786N*m
Torque calc equations from https://blog.orientalmotor.com/motor-sizing-basics-part-3-acceleration-torque-and-rms-torque?hsCtaTracking=61e797c8-691e-42b9-bc67-8d81f3edd290%7Cd97efa5e-7fb0-45ab-a679-ab1b99594288
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Safety Factor (SF)1.5
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Max Torque w SF4.518451178N*m
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39.99166265in*lbs
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