Gravity equation E- Rotation Matrix R a, = [az] cos(pitch) 0 -sin(pitch) 1 ay 1 cos(roll) sin(roll) cos(pitch) 0 -sin(roll) cos(roll) az sin(pitch) 0
Gravity equation E- Rotation Matrix R a, = [az] cos(pitch) 0 -sin(pitch) 1 ay 1 cos(roll) sin(roll) cos(pitch) 0 -sin(roll) cos(roll) az sin(pitch) 0
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Mobile Computing Android
Hello I was wondering if you could go over the gravity, accelerometer, magnetometer equtions. Maybe use an example on how the calculations would go about.

Transcribed Image Text:Gravity equation
Rotation
ay =
Matrix R
[az.
1
ax
cos(pitch) 0 -sin(pitch)
1
cos(roll) sin(roll)
ay
cos(pitch)
0 -sin(roll) cos(roll)
az
sin(pitch)
||

Transcribed Image Text:Magnetometer equation
Rotation
my =
Matrix R
[mz.
cos(pitch) 0 -sin(pitch)|
cos(yaw) -sin(yaw) 0
sin(yaw)
mx
my
1
cos(roll) sin(roll)
cos(yaw)
M
mz
sin(pitch) 0
cos(pitch)
0 -sin(roll) cos(roll)
1
Pitch, roll known from accelerometer
Unknown yaw can be determined from above equations
yaw, pitch, roll together determine the rotation matrix (3D orientation) of a system
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