Calibration Transfer Between Two Devices

摘要

Disclosed is a system to automatically calibrate a compass (e.g., a compass with a magnetometer) of an aerial vehicle. Auto calibration may occur at power up of the aerial vehicle or shortly thereafter. The system may be configured to rotate a gimbal, coupled with the aerial vehicle, in a wide range of rotational angles. The system may calibrate, in response to the rotations, a compass of the gimbal to obtain one or more calibration values and transfers the one or more calibration values to the aerial vehicle. The system may add a calibration difference value to the calibration value to obtain an adjusted calibration and may store the adjusted calibration for use with the compass of the aerial vehicle.

主权项

1. A method to automatically calibrate a compass of an aerial vehicle, the method comprising:
rotating a gimbal coupled with the aerial vehicle to a plurality of angular rotations; measuring a magnetic field, with a gimbal compass of the gimbal, at the plurality of angular rotations to obtain a plurality of measurements; calculating a calibration value for the gimbal compass based on the measurements; transferring the calibration value to the aerial vehicle; adding a calibration difference value to the calibration value to obtain a current calibration value for the aerial vehicle; and storing the current calibration for use with the compass of the aerial vehicle.