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Arduimu V3 in a rocket for attitude detection

Posted by JDerimi on September 27, 2012 at 9:27am

I am investigating the use of Arduimu to detect the attitude of a rocket during flight. 

The question I had is around the correction of gyro drift.  A rocket's motion profile has a sudden accleration followed by a ballistic trajectory.  During this ballistic trajectory there is no acceleration (actually very small) in the rocket's frame of reference and gravity is not able to be sensed.

Will I have to disable the accelerometer based gyro correction in the base Arduimu code?

Can the Arduimu be made to work for this application.

 

Thanks

Jack

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Replies

  • lance December 20, 2013 at 1:08pm

    Hiya man, I'm enduring the same proble. Accelerometer systems only work with systems firmly planted on the earth, or only in free fall. If your rocket decends at an angle less than 60 deg with respect to the earth your angular approximation may be thrown off a little bit lol.

     

     I decided to use a magnetometer to determin orientation. I have also a quesiton for you, I'm a little ignorant of Euler angle sequences and sigularities, but is 3-1-3 eulerr angle sequence best for determining  rocket flight path? I heard 3-2-1 has sigularity when pointing straight up or down but don't know what that really means.

     

    Regards,

     

    Lance

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