Accelerometer wiki page erroneous axes ?
fercerpav at gmail.com
Wed Apr 8 15:02:55 CEST 2009
Paul Fertser <fercerpav at gmail.com> writes:
?> Michael Tansella <michael-tansella at gmx.de> writes:
>>> So, the fact that when idle the accelerometers report a positive Z value
>>> implies that the Z axe is actually upward.
>>> Agree ?
>> Yes I think that's right. If you hold the Freerunner that any arrow of an axis
>> points to the earth middlepoint then the sown value must be
> I beg to disagree. If you are talking about acceleration of the sensor
> itself then you'll see that: 1. it's not actually accelerating if you
> attach a reference frame to the Earth (the freerunner is laying
> still). 2. The gravitational force applied to the sensor is directed
> to the center of the Earth, so the reported "acceleration" should be
> positive too.
Thinking about it a bit more, i now understand that if you insist on
talking about accelerations, the Z axis should point upwards.
Be free, use free (http://www.gnu.org/philosophy/free-sw.html) software!
mailto:fercerpav at gmail.com
More information about the community