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

From: Gautier Hattenberger
Subject: Re: [Paparazzi-devel] IMU Problem after BungeeTakeoff?
Date: Mon, 16 May 2011 15:55:04 +0200
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv: Gecko/20110424 Thunderbird/3.1.10


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.


On 16/05/2011 13:35, Lange Dennis (langede0) wrote:

We're using the arduino-basic code and the Kalman Filter for GPS-Data


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 

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


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