IMU Status

[Jake Galloway]

Does anybody else have an issue where the IMU will report acceleration and need to be calibrated after only a few flights? For example, I'll perform an IMU calibration, both IMU 1 and 2 will report close to zero for both Gyro and the accelerometer. But after a few flights the accelerometer bias on IMU 1 will be several points higher than the rest.

https://www.heliguy.com/blog/wp-content/uploads/2016/09/click-calibrate-imu-700x526.jpg

 

[jljal288]

Does anybody else have an issue where the IMU will report acceleration and need to be calibrated after only a few flights? For example, I'll perform an IMU calibration, both IMU 1 and 2 will report close to zero for both Gyro and the accelerometer. But after a few flights the accelerometer bias on IMU 1 will be several points higher than the rest.

https://www.heliguy.com/blog/wp-content/uploads/2016/09/click-calibrate-imu-700x526.jpg

Hi jake, I have experienced this also, my accelerometer readings are the same after cold Imu calibration, but after further flights the read out for accelerometer bias for accelerometer 1 is 0.016 and for accelerometer 2 it is 0.002. I have not noticed any effect from this and flew 18000 feet out and the same back today landing with 15percent battery. No issues at all same as always. I have recalibrated IMU in past several times because of concern over the discrepancy but since I have never noticed an effect on flight behaviour and the mavic doesn't prompt me to calibrate IMU, more recently I've just let it be. Have you made any progress on this jake or still happening? Is it causing you any malfunctions or abnormal behaviour from the mavic?