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Gathiyo / arducopter

Automatically exported from code.google.com/p/arducopter
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Auto Landing crash #327

Closed GoogleCodeExporter closed 8 years ago

GoogleCodeExporter commented 8 years ago 
Arducoper
What steps will reproduce the problem?
1.Fly outside in -2 / -3, calm weather.
2.Enable Land Mode
3.

Quad hovers for a bit then slowly starts descending. From about 2-3m up it 
decided to slow the motors to such a point it fell like a rock.

After the crash landing, I flew it away again so no disarm and everything was 
still functioning.

Could it be possible implicit trust of the sonar which was mis-reading due to 
temperature? 

3DR Quad, APM1 2.3 Sonar + GPS + Magno

have not tried to recreate it ;)

Thanks
Crispin

Original issue reported on code.google.com by crispin....@gmail.com on 3 Feb 2012 at 9:05

GoogleCodeExporter commented 8 years ago 
[deleted comment]
GoogleCodeExporter commented 8 years ago 
Hi !
This issue has been fixed by Jason, 14 hours back. In the ArduCopter.pde file, 
you just need to comment two line;

Existing:
reset_rate_I();
reset_stability_I();

Fix by Jason:
//reset_rate_I();
//reset_stability_I();

Original comment by narpat...@gmail.com on 4 Feb 2012 at 3:50

GoogleCodeExporter commented 8 years ago 
@narpat007,
    hmm...not so sure about that.  The fix you're talking about is for the 5sec wobble at take off I think.  no?

Original comment by rmackay...@gmail.com on 4 Feb 2012 at 3:57

GoogleCodeExporter commented 8 years ago 
Fixed in trunk so verify_land_sonar is just like verify_land_baro (although 
still needs more testing): 
http://code.google.com/p/ardupilot-mega/source/detail?r=9570be302d8599e57be598fd
d555ae2a4c41ac66

Original comment by rmackay...@gmail.com on 9 Feb 2012 at 12:55