In test flight use my own GCS last sunday, it looks like the Auto mode and RTL mode doesn't work, I make a image of flight track as follow.
I think waypoints which set by my GCS is correct, because when i use MissionPlanner download from apm, it looks no error.
In flight, the air speed is about 5m/s, and the ground speed is about 15m/s.
the height of flight is 40-60m.
log file download from APM: 2013-08-05%2021-12%20197.log
flight begin at about 50000 in log file.I found that home point's positon is wrong. and beside this, Is there any other mistake in my seting or flight?
thanks a lot
It's my GCS:
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I explore the log data download from APM,
From 53073 - 53900, Flight mode is Stabilize
From 53900 - 54914, Flight mode is Auto
From 54914 - 55671, Flight mode is RTL
and at about 55671, plane crashed
I graph the data of Yaw, TargBrg, NavBrg. In my opinion, value of NavBrg should withing 0.0 and 360.0 degree, but NavBrg value is greater than 360.0 in fact.
Is there any thing wrong in parameter setting to APM or any other mistake has been made?
Nice Chinese translation of the G of GCS which GCS is this and for what AP?
Hi Scaple!
I took a quick look and the first thing I noticed is that your board voltage is dangerously low.
It sits around 4.5 volts with drops below 4.4 volts. It should be 5 volts for the APM to function properly. I observed all kinds of strange behaviour when board voltage goes low. Do something about that before you go flying again.
The second thing I noticed is that the altitude error stays the same during your auto flight, the plane should climb or descent until it reads zero. This indicates a badly out of tune pitch controller. This I cannot verify, because CTUN logging is not enabled, I suggest you enable it for your next flight.
Then I took a look at your parameters. Most of them are all stock! Did you do the tuning of all controllers described in the APM:Plane manual?
With the stock PID settings (which are very low) the APM hasn't got enough control authority to properly steer the plane around in the sky.
Do the tuning! Tune all controllers, exactly as described in the manual.
Proper tuning is the most important step in getting the APM to fly well.
Use the easy method, it will yield good results. Get someone to help you change PID settings on the fly.
And next time, before switching to any auto modes (such as loiter,RTL,AUTO) fly it on FBWA mode. If you can steer it around in fly by wire A with good control authority you will know that the controller settings are good.
(again read the manual. all of it!)
Pieter.