I am building a two wheeled robot which will have:
- max speed of 10km/h and acceleration of 0.5m/s²
- can climb 12° slopes
- weighs at most 30 kg
- wheel diameter is 50cm
By doing the calculations myself, and checking with many online automatic calculator I find that in the "worst" possible conditions I would need :
- Around 9.5Nm of torque
- Around 100Rpm for speed Which results in approximately a 100W motor.
When I look for suitable motors online I come across a lot of sites recommending different motors depending on robot weight.
An example would be.
Where this kind of motor is recommended for up to 150lbs robots and it is a 30-50W motor (I believe they use 4 of them).
Is the power I'm looking for in my case too "overkill"?
Seeing as this is an indoor robot but which will need to be able to go up slopes to reach different areas, do I need to find a motor that corresponds exactly to my numbers or do I need to get something even more powerful since efficiency is never 100%?