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Attitude/airspeed manager
The duty of this module is to constantly accept instructions from the path manager module (it's told what attitude and airspeed are required) and use information it gets from the appropriate sensors to get the aircraft to arrive at the desired attitude and airspeed as fast as possible.
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The sensors relevant to the attitude manager are the IMU and the airspeed sensor.
Both the The Sensor Fusion, the PID and the PID output mixing algorithms can, for the most part, be ported from PicPilot.
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