Calculating acceleration - Help

Other Hardware Motors, Mechanics, Power and CNC
1

Hello there!

I am building a small robot and i have been doing some calculations regarding torque and what not and i just had a small query.

I am trying to find out the maximum acceleration of my robot.

I know that the resultant acceleration force is 1.53N and that the mass of my robot is 0.3kg.

So im using F=ma to calculate the acceleration in m/s^2 however when i rearrange i get the answer of 5.1m/s^2 , my doubt is that his seems extremely high for the size of my robot and motor.
The motor only has a torque of 0.06Nm. My powered wheel radius is 2cm.

I was just wondering if anyone could clarify for me if im doing something wrong or why the number seems so high...

Thank you!

2

That's not high. If the max speed were large it would be a safety issue but for a small slow
robot all it means is don't balance your drink on it!

3

To put it into realistic terms 5M/S^2 is around 0.5G, or half the force of gravity, so as MarkT says "not high"

4

A lot of the eventual force/torque will go into overcoming frictional elements also :drooling_face:

5

How did you measure the acceleration force?
Ideally, the motor should be able to accelerate the robot with 3 Newtons of force.