- #1
czechman45
- 12
- 0
Our lab just got these fancy new accelerometers that I'm trying to figure out. They are triaxial, but are not yet calibrated. As I was looking into how to calibrate them, I realized that, for a given axis, I would get a different voltage reading depending on whether the axis was oriented vertically (positive down), horizontally, or vertically (positive up). This is in fact how they recommend calibrating them.
Here's my problem. Doesn't this go against the whole idea of acceleration?! In each case, the sensor is not accelerating, it is just oriented differently, so why am I reading different values for the acceleration.
Also, does this mean that once the sensors are calibrated, that all of the readings I get will be orientation specific? If so, who is that dealt with? I would have a constantly changing orientation and no way to find euler angles.
Thanks for any help that you can give.
Here's my problem. Doesn't this go against the whole idea of acceleration?! In each case, the sensor is not accelerating, it is just oriented differently, so why am I reading different values for the acceleration.
Also, does this mean that once the sensors are calibrated, that all of the readings I get will be orientation specific? If so, who is that dealt with? I would have a constantly changing orientation and no way to find euler angles.
Thanks for any help that you can give.