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AutoQuad Forum • View topic - Dynamic Calibration - Step 4A Sim3 Gyro MAE ~

Dynamic Calibration - Step 4A Sim3 Gyro MAE ~

Static, Dynamic, Log File Analysis, Troubleshooting

Dynamic Calibration - Step 4A Sim3 Gyro MAE ~

Postby Jessestr » Tue Nov 27, 2012 9:54 pm

Hello

I am doing test calibrations on my computer and I want to check the MAE of step 4a.. In the wiki it's about 0.11481 on only 2 loops (MAE).

Mine is 275 loops in about 10 minutes and it is at 0.256275.. Every step a drop of 3 +- Sometimes bigger drops.
Now I'm typing another line and I'm at 325 loops and MAE : 0.256174 so it's going down well.. But it won't reach the same as in the wiki ...

Is this normal?

Jesse
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Re: Dynamic Calibration - Step 4A Sim3 Gyro MAE ~

Postby Max » Tue Nov 27, 2012 10:35 pm

Yea, the MAE is always relative, so specific examples don't apply. As long as it's dropping steadily and not doing funky things like jumping around a lot, you should be fine. My first board/calibration had lower MAEs than my 2nd by about a factor of 0.1 (but 2nd flies fine too :) ).

-Max
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Re: Dynamic Calibration - Step 4A Sim3 Gyro MAE ~

Postby Jessestr » Tue Nov 27, 2012 11:37 pm

Thanks. At 2430 now and MAE: 0.251821 and still every step is now going down by 2 and not anymore 3.

So, don't know if I have to wait until it's really done. Since the wiki says about 500-2000 samples.
Think my dance was quite well so don't have any bad data.. Could you check my other topic from the dynamic calibs logs?

Thanks
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Re: Dynamic Calibration - Step 4A Sim3 Gyro MAE ~

Postby Max » Wed Nov 28, 2012 12:38 am

Max
 
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Re: Dynamic Calibration - Step 4A Sim3 Gyro MAE ~

Postby Jessestr » Wed Nov 28, 2012 1:15 am

Thanks.

4538 loops - MAE: 0.248672

Dropping with 0.000001 and about every 10 steps it drops with 0.000002
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Re: Dynamic Calibration - Step 4A Sim3 Gyro MAE ~

Postby Jessestr » Wed Nov 28, 2012 1:56 am

Seriously.. Just aborted. Saved params to file and then started again.

Went from 0.247826 to 0.175984 and dropping with 0.000004 now.. So think it's good for a while again.

Went to step 4b sim3 - acc and the last three numbers are swinging with like 0.000300 / loop up and down..
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Re: Dynamic Calibration - Step 4A Sim3 Gyro MAE ~

Postby Jessestr » Wed Nov 28, 2012 9:44 am

I need some help... Shall I redo my calibso? The swing stops after a while and then it goes steadily down.

MAE is now: 0.173406 but the ACC does weird sometimes.
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Re: Dynamic Calibration - Step 4A Sim3 Gyro MAE ~

Postby JussiH » Thu Nov 29, 2012 10:44 am

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Re: Dynamic Calibration - Step 4A Sim3 Gyro MAE ~

Postby Jessestr » Thu Nov 29, 2012 11:47 am

Thanks. the swings stop after some time. Will have to do the dance again anyways when adding my Video Downlink & Camera gear. Calculations were done in about 7 hours.
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Re: Dynamic Calibration - Step 4A Sim3 Gyro MAE ~

Postby Dju » Wed Jul 09, 2014 11:27 am

Hi everyone,
my MAE in step 4a and 4b begins at 4.2, it's strange no ?
the result seems to be good during few loops, and after that they act in really weird way:

0.741440 0.273468 2.771778 0.000000 0.000000 = 3.786686
Loops: 682

#define IMU_GYO_SCAL_X -5900.544612325033 // 8944.950111444725 +106.881028922500
#define IMU_GYO_SCAL_Y -6050.408275024172 // 58972.284551643650 -703.289438709729
#define IMU_GYO_SCAL_Z -88784.184049529023 // 9315722119.735080700000 -597394.759127230500
#define IMU_GYO_ALGN_XY +862263.787741126960 // 634843878.428503160000 -113894.974727822820
#define IMU_GYO_ALGN_XZ +4001.867336844128 // 51085.411866201895 -62.084803471233
#define IMU_GYO_ALGN_YX +367852.266788441160 // 1446245671.579250800000 +152451.169690260020
#define IMU_GYO_ALGN_YZ +17187492582100.691000000000 // 114599560903686510000000.000000000000 +707146458765.958980000000
#define IMU_GYO_ALGN_ZX -0.018716088987 // 0.000001802061 +0.000000000606
#define IMU_GYO_ALGN_ZY +0.173243641574 // 0.000779520372 +0.000000039461
DJI F450
autoquad FC
ESC32
Futaba 8J + R2008sb rx
LIPO 4S
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