Re: [Paparazzi-devel] Lisa/M terminated standby circling

[Balázs GÁTI]

Hi,

Paparazzi version: v5.4.0_stable

The two log files can be downloaded:

ftp.edufly.net Port 21
user: address@hidden
p: NW7100log

Time of interest
13_03_52: t= 315s
13_47_23: t= 320s


Balazs



2015-05-29 15:43 időpontban Gautier Hattenberger ezt írta:
> Can you post the log files somewhere ? And give exact paparzzi
> version (./paparazzi_version)
>
> Gautier
>
> Le 29/05/2015 15:22, Balázs GÁTI a écrit :
> > Hi,
> >
> > I just experienced an interesting behavior of a Lisa/M v2 
> > (Transition Robotics) with Paparazzi v5.4.0.
> >
> > I had finished tuning my fixed wing in AUTO1 and switched to AUTO2. 
> > The plane started to intercept altitude and to align himself to the 
> > Standby circle. After a half (more or less) stabilized circle she 
> > terminated the circle and started to roll to the opposite direction. I 
> > switched back to AUTO1 and landed. Post flight analysis of log showed 
> > no anomaly. No warning, no lost RC or GPS, no GPWS warning, no change 
> > in PPRZMode, motor running.
> >
> > I increased the height of waypoints and started a new flight. The 
> > result was the same. After a half circle in Standby mode, she started 
> > an opposite spiral. I left her to do it and experienced a path similar 
> > to one and a half spiral in strong in wind by constant roll. Post 
> > flight analysis showed a rapid change in Desired.Roll, even the carrot 
> > and the green circle of the Standby mode still behaved as I expected.
> >
> > The rapid change in Desired.Roll happened more or less in the same 
> > time as Attitude.Psi changed sign. This is only expectation, because 
> > this sign error would ruin all Paparazzi flight in the world. Even my 
> > simulations didn't predict this behavior. Unfortunately the telemetry 
> > messages are not too dense to confirm this expectation. Do you have 
> > any advice what should I do to identify the reasons? (NEO7P works 
> > already fine.)
> >
> >
> > Regards,
> >  Balazs
> >
> > _______________________________________________
> > Paparazzi-devel mailing list
> > address@hidden
> > https://lists.nongnu.org/mailman/listinfo/paparazzi-devel
>
>
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---
Balazs GATI, PhD
associate professor
Department of Aeronautics, Naval Architecture and Railway
Vehicles
Budapest University of Technology and Economics

Address:   Budapest
Stoczek u 6. J. ép. 423
1111
Tel:       +(36)-1-463-1960 [1]
Fax:       +(36)-1-463-3080 [2]
Homepage: http://vrht.bme.hu/ [3]