Conversion from Roll-Pitch-Yaw to Phi-Theta-Psi

JDave.4 · ‎2022-06-30

Hi,

The output of MotionDI algorithm is Roll and Pitch angles. How can I convert Roll-Pitch-Yaw to Phi-Theta-Psi? Thanks.

JDave.4 · ‎2022-07-02

Any idea?

Miroslav BATEK · ‎2022-07-10

Hello, it is not clear what do you want to accomplish. What is your definition of the Phi-Theta-Psi and why you can't use roll and pitch.

JDave.4 · ‎2022-07-12

Hello,

Indeed I would like to calculate the tilt angle for an inclinometer application.

Please see the AN below:

https://www.st.com/resource/en/application_note/an4509-tilt-measurement-using-a-lowg-3axis-accelerometer-stmicroelectronics.pdf

Please see page 7 equation 6 and 7. But MotionDI output values at only one axis deviate from those when the sensor is tilted on both axes. How can I fix it?