7. Resource Specification - L-division-2021-2022-Even/Repo-13 GitHub Wiki
7.1 Motor sizing :
We are using 2 DC geared motors for the movement of our bot.
REQUIRED INFORMATION:
| Rated RPM AT 12 V | RATED Torque IN kg-cm AT 12 V |
|---|---|
| 1000 | 0.12 |
| 500 | 0.25 |
| 300 | 0.35 |
| 200 | 0.5 |
| 100 | 1.2 |
| 60 | 2 |
| 30 | 4 |
| 15 | 8 |
| 10 | 12 |
| 3.5 | 30 |
By all the means of calculation, we got our total mass of our model to be 4.1kg and also we got our mass for each sub-parts. thereby we found the torque for each part as shown below:
- Dimensions of chassis= (l=25 x b=15 x h=0.1)+(h=0.1 x l=6.5 x b=5.7)= 41.2 cm^3 mass of chassis= density x volume = 7.8 * 41.2 = 321.36g
- mass of dc motor= 130 x 2= 260g
a) Moving Unit
| Weight of the model = 4.1 Kg |
|---|
| F = M*A = 4.1 * 9.81 = 40.221N |
| T=Fr = 40.221*0.039 = 1.56kg-cm |
| As the torque is 1.56, therefore our desired motor is of 60 RPM |