7.Motor Sizing And Adapter Selection - Q-Div-2022-2023-Odd/Repo-6 GitHub Wiki

Collector motor sizing and selection

m=rho*v

foam sheet outer

v=l*b*h
 =0.06912*0.025*0.05
 =0.000864 m^3

foam sheet inner

 v=l*b*h
  =0.04398*0.025*0.05
 v=0.000549 m^3

separators

     v=l*b*h
      =0.025*0.040*0.05
     v=0.0005*4
     v=0.0002

Foam sheet

    v=pi*r*r*h
     =pi*0.110*0.110*0.05
     =0.0019 m^3

Mass of foam sheet

    m=1.18*10^3*(0.000864+0.000549)
     =1.18*10^3*14.13*10^-4
     =16.67*10^-1
    m=1.667kg

Mass of foam sheet

    m=0.9*1.9*10^-3+3
    m=1.71kg

total m=1.667+1.71kg

total m=3.377kg

F=mg=3.377*9.8=33.09N

T=Fr=33.090.110=3.64kg/m

therefore RPM=30

model name=12v low noise DC motor with metal gear

GradeA
Adapter Selection:

3 DC motors are used for with 60 RPM each

3*30=90 mA

factor of safety=1.2 90*1.2=108 mA

hence the adapter is 12v and 1A