Hey everyone,
I am trying to make an acceleration data logger for a tire that tracks centripetal and tangential acceleration.
I am focused on large tires like trucks, but this means I need an accelerometer with a range of over 300 Gs (specifically for the centripetal acceleration).
Does anyone have any recommendations for a board that could work?
You can calculate the centrifugal rotary acceleration from the the speed (rpm) and distance (radius). I'm not sure what you mean by tangential acceleration, how do you apply it?
I have a housing that attaches to the lug nuts on the truck tire. In that housing, I will mount the arduino and accelerometer.
Since the accelerometer will rotate with the tire, I can find the tangential and radial acceleration.
Radial acceleration depends on the distance from the radiation center. In the center the acceleration is zero and increases with increasing radius. Tangential acceleration is zero at constant speed.
Radial acceleration (centripetal acceleration) increases as the radius decreases and is undefined when radius = 0.
You're forgetting that the tangential acceleration vector keeps changing direction so it generates a sinusoid when tracking a rotating tire
It makes a difference whether you (observer) see the accelerations from a point of the rotating tire (sensor location) or from outside. The tire only "feels" a radial acceleration to the outside that is constant at constant speed, like on a rotating carousel you feel a constant acceleration to the outside. Your sensor sits on the carousel and feels the same acceleration, different from an observer standing still outside the carousel.
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