|
From: | Refik Sever |
Subject: | Re: [Paparazzi-devel] airspeed_ets calibration |
Date: | Mon, 26 Aug 2013 12:48:10 +0000 |
Hi,
I tried to disable the airspeed_ets offset calculation in initialization. However, it did not work because I think that sensor offset strictly depends on temperature. When I first power on, sensor gives values around 1500. It worked for 15-20, and it came to its actual offset value of 1550. It was in room so the temperature was constant. I think that the sensor's own temperature has increased because of working. Considering the temperature variation during long flights, I think that we must calibrate the sensor for temperature variation. Best regards, Refik >In the airspeed_ets.c file, I saw that the offset value ("airspeed_ets_offset", not "AIRSPEED_ETS_OFFSET") is >calculated for once when we power on the autopilot. Therefore, the offset changes in every time we open it >in different wind conditions. That explains why we couldn't calibrate it. >I think that calculating and fixing the airspeed_ets_offset for once will be better then to change it in every >power on. > >Regards, >Refik |
[Prev in Thread] | Current Thread | [Next in Thread] |