7. MOTOR SIZING AND BATTERY SIZING - B-Division-2022-2023-Odd/Repo-10 GitHub Wiki
MOTOR SIZING AND BATTERY SIZING
# ## Motor Size Principles
-
Speed: The number of revolution per minute of the motor. Usually denoted "N" and measured in rpm (revolutions per minute)
-
Torque: The force with which a motor turns is called Torque. measured in Newton-meter(N-m)
-
Mechanical Power: The mechanical output of the motor (P) measured in Watts. P=(23.142N*T)/60
Torque****calculation
T=F*r=F*(D/2)
T= Torque in N-M.
r=Distance between the center of rotation and force point in m.
F=Force in N.
Horizontal Force
F=umg
where
m=mass of the object
u=Coefficient of friction between two surfaces
g=Gravitational Acceleration
Dimensions
- Flip board
thickens=0.005m
width=0.2m
height=0.58m
v1=(twh)
=0.005*0.2*0.58
=0.00058m^3
Mass=v*density
=0.00058*48
=0.028Kg/m^3
F=m*g
=0.028*9.8
=0.27N
F=u*m*g
=0.6*0.27
=0.2N
r=20cm
T=F*r
=0.2*20
=4Ncm
Tmax=T*1.5
=4*1.5
=6Ncm
T=6/9.8
=0.6Kgcm
Motor Size: 60 RPM 12V Noise DC motor with Metal gears-Grade A Battery Size:12V
- Flip board
thickens=0.005m
width=0.16m
height=0.29m
V=twh
=0.0050.160.29
=0.000232m^3
Mass=V*density
=0.000232*48
=0.011136Kg/m^3
F=M*g
=0.011136*9.8
=0.11N
F=uMg
=0.6*0.11
=0.07
r=16cm
T=F*r
=0.07*16
=1.12Kg-cm
Tmax=T*1.5
=1.12*1.5
=1.68Kg-cm
T=1.68/9.8
=0.17=0.2Kg-cm
Motor Size: Tower Pro MG996R
Battery Size:5V