9. Motor and Adapter Selection - P-Division-2024-25-Odd/Repo-09 GitHub Wiki

7.1 MOTOR SIZING CALCULATIONS

FOR DC MOTORS

Acrylic V=pir^2h 2/22/210pi=0.591576 8.5/28.5/2pi0.4=22.68 12150.4=72 26.50.610=117 210pi1.8/21.8/2=5.0868 4[pi6.5/26.5/20.6]=79.99 20.52.50.4=20.5 13.50.43=16.2

Total volume of Acrylic material 0.591+5.0868+22.68+72+117+20.5+16.2 =0.025405 density=mass/volume mass=densityvolume mass=0.0254051200 Mass of acrylic sheet=30.486kg

Aluminium V=pir^2h pi0.412.50.4=6.28318 pi0.380.32=2.827 total volume of aluminium material=0.00000911017 mass=densityvolume 0.00000911017*0.00270 0.024597kg

Total volume of Aluminium material=0.00000911018 mass=densityvolume 0.000009110182700 =0.024597486kg

Total volume of ball bearing 2[1.11.1pi0.6]=4.5592810^-6 mass=densityvolume 0.000004559287850 = 0.035790348kg

Total volume of Steel material 9[0.41.50.4]=0.24 mass=densityvolume 78500.00000024 =0.001884kg

Total mass=0.461964kg Torque=rf Torque=1umg Torque=4.5kgcm

"FOR 4.5KGCM TORQUE THE MOTOR SHOULD BE OF 30 RPM" .

FOR NEMA 17 STEPPER MOTOR

ACRYLIC(volume)=0.120.1350.004 =00.0000647m^3 WKT MASS=DENSITYVOLUME MASS=1180KG/M^30.008648=0.0764KG CIRCLAR BASE(ACRYLIC)=PIR^2H =3.140.4350.4350.004 =0.0000237m^3 Mass=11800.0000237=0.027966KG BUSH(ACRYLIC)=PIR^2H =3.140.010.010.01 =0.00000314m^3 Mass=11800.00000314=0.0037052 TOTAL MASS=0.1080712KG TORQUE=RF =1.8MM0.10807*9.8 =1.90633KgCm

7.2 ADAPTER CALCULATIONS:

ADAPTER SELECTION: V=12V

FOR DC MOTORS I=300mA

WE USE 2 DC MOTORS=300mA2=600mA INCLUDING SAFETY FACTOR=0.61.2=0.72A THEREFORE WE USE 12V DC SUPPLY TO RUN DC MOTORS. ADAPTER SELECTION:

FOR NEMA 17 STEPPER MOTOR

I=1.5A INCLUDING SAFETY FACTOR=1.5*1.2=1.8A THEREFORE WE USE 12V DC SUPPLY OF 2A CURRENT TO RUN A NEMA 17 STEPPER MOTOR USING A L2898N DRIVER. Therefore both dc motors and nema 17 stepper motor are controlled by 12V dc supply of 2A