Re: [Paparazzi-devel] IMU Problem after BungeeTakeoff?

[Gautier Hattenberger]

Hi,

The arduimu_basic code has some special tricks to try to detect high 
acceleration when launching (high throttle, low speed) and prevents the 
imu from using accelerometers. I'm still removing some bugs, but it 
seems to work (although it's only a stupid hack in the end...). 
Antoine's filter seems to be a bit clever than that.

Gautier

On 16/05/2011 13:35, Lange Dennis (langede0) wrote:
> Hi
>
> We're using the arduino-basic code and the Kalman Filter for GPS-Data
>
> Dennis
>
>
> Am 14.05.2011 05:15, schrieb antoine drouin:
>
> Hi Dennis
>
> What filter are you using ?
>
> On Sat, May 14, 2011 at 12:38 AM, Lange Dennis (langede0)
> <address@hidden>  wrote:
>
> Hi all
>
> We would like to develop an autonomous Bungee-Takeoff. We have written a 
> routine that actually works. In the first seconds of the start it looks very 
> good. But then the UAV starts to decline again. But the log file sayd that the 
> UAV wants to climb all time. And we also saw that the PFD did not show the 
> right position.
> So we believe that the IMU has an error because of the acceleration during the 
> takeoff.
>
> We also tried the BungeeTakeoff from the OSAM-Team>>  same problem
>
> Has anyone else had this problem? Or does someone have a solution?
> We considered to control the angle of attack with an extra sensor during 
> takeoff. Can it work?
>
> Thanks in advance
>
> Dennis
>
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