Re: [Paparazzi-devel] one crash today, reach MAX_DIST_FROM_HOME, PID problem ?

[Gautier Hattenberger]

Hi,

This is interesting. A few seconds after entering HOME mode, the course 
control was correctly giving orders, but the desired roll value stopped 
following them, so the plane have gone straight instead of flying back 
to home.
Which version of paparazzi are you using ? (run ./paparazzi_version in 
the paparazzi base directory).

Also, a few comments on your flight:
- you should select the takeoff block *before* flying and not already in 
flight, even if your takeoff is in manual/auto1
- if you forgot to do it and select it in flight, it will not resurrect 
the motor because the exception in this block (AC alt > 25m above 
ground) will deroute to Standby block without calling the instruction 
that sets the motor on. But you can do it by hand with the button in the 
strip (the green turning arrows) if you have the default_fixedwing.xml 
settings in you plane configuration.
- don't do a geo_init while flying, it will move all your waypoints and 
ground alt reference according to the current position, that's why you 
flew almost 100 meters higher than expected.


Gautier


Le 21/07/2014 23:43, afishindouban a écrit :
> Dear all
>
> Today I try to tuning my new fix-wing with Lisa/M2, initially was good, but
> last flight I made a mistake,  one way point is too close to the bordering,
> so MAX_DIST_FROM_HOME fail-safe trigger executed. But I don’t know why, AC
> can not return to home, and fly farther, finally kill trigger executed after
> get 1.5 time of MAX_DIST_FROM_HOME. and the glide to ground, Fortunately,
> the plane landed in the treetops, with gentle pitch down, so nothing get
> damaged.
>
> Someone can have a look at this log file, and give me some suggestion for
> How I can tune it better ? or I have made other mistake?  attached log and
> data files. for check it, Please change the name to log.tar.gz
> <http://lists.paparazziuav.org/file/n15846/log.gz>
>
> thank you so much.
>
> Kevin.
>
>   
>
>
>
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