Re: [Paparazzi-devel] simultaneously using two autopilot systems for reliability

[Reto Büttner]

Hi Reflik

To all our experience it is safer to keep the UAV simple. Mostly you
detoriate your systems reliability by adding additional "safety"
devices. See our discussion:

http://lists.gnu.org/archive/html/paparazzi-devel/2011-08/msg00051.html

Regards, Reto

2013/3/26  <address@hidden>:
> Dear Refik,
>
> at the moment I think there is no implementation which would allow a
> redundant setup.
> When you think about it there are some problems like how to connect the
> servos and how to do the switching (how do you decide which autopilot is
> "correct" at a given moment).
> You would need 3 systems and a voting/switching system.
>
> This will make your whole system so complex that the chance for a failure
> probably rises...
>
> Normally Taparazzi systems are very robust and reliable. So I would go for
> one of the up to date systems (depending on your setup) like LISA or Umarim
> in standard configuration and do a lot of testing before the long duration
> attempt. Then monitor the values closely during flight and stop if anomalies
> occur.
>
> Cheers
>
> Marc
>
>
>
>
> Gesendet: Dienstag, 26. März 2013 um 09:21 Uhr
> Von: refik <address@hidden>
> An: address@hidden
> Betreff: [Paparazzi-devel] simultaneously using two autopilot systems for
> reliability
> Hello,
>
> In paparazzi, is it possible to use two complete autopilot systems for
> reliability ? (each system includes GPS, imu, transmitter and autopilot, if
> one of the systems is gone, the system automatically switches to other).
>
> If it is not possible currently, I think that it will be a good choice to
> implement.
>
>
> We will try to fly an aircraft for 24 hours within 20km, therefore we will
> need a reliable autopilot. What configuration (autopilot, imu, Gps and
> modem) do you suggest to use?
>
> Cheers,
> Refik
>
>
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