I am having great difficult understand my readout from an accelerometer that I placed on a rotation wheel. The wheel spins at various speeds and i measured the radius from the center. I think I mentioned before that I had done some calculations and I was expecting z=11g (which I know many disputed). And then I was thinking that the displacement in the x and y direction would be
X(t) = r · cos(ω · t) = r · cos(2 · π · f · t) (1)
Y(t) = r · sin(ω · t) = r · sin(2 · π · f · t)
x(t)=rcos(ωt)=rcos(2πft)
y(t)=rsin(ωt)=rsin(2πft)
and so acceleration would be this differentiated twice.
When I looked at the recording on my accelerometer it was strange as zz was indeed 1g, x x remained at 0 and yy does vary but not in the way I was expecting. ie like a sin or cos wave over time in fact the signal oscillated about a particular value in the same was x x and zz does. however, this value is not quite as much as I would expect. Any help or advice to offer insight into this would be greatly appreciated you guys
