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

From: Aka
Subject: Re: [Paparazzi-devel] simultaneously using two autopilot systems for reliability
Date: Tue, 26 Mar 2013 10:21:59 +0100 (CET)

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.
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

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

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?


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