Descending while flying forward/backward [resolved]

The last Bastion to fine tune your FC matching your airframe & setup

Descending while flying forward/backward [resolved]

Postby jet » Fri Apr 17, 2015 2:43 pm

Hi, all.
For position hold, when my throttle was in center position, I let my AQ6 fly forward or backward.
My AQ6 always descended automatically; then, my AQ6 ascended.
If I let my AQ6 flied left or right, the aforementioned condition did not happen.
Based on the AQ6 wiki, I tried to decrease altitude position P and increase navigation speed I.
The condition still existed.
I checked the values of ACC and MAG that were close to 9.9 and 2.1.
Does anyone have any suggestion?
Thanks for help.
jet
 
Posts: 69
Joined: Wed Mar 05, 2014 2:23 am

Re: Descending while flying forward/backward [resolved]

Postby jet » Tue Apr 21, 2015 2:35 pm

I checked the previous discussions.
I resolved my problem.
1.I calibrated altitude override again.
2.I decreased NAV_SPEED_P and NAV_SPEED_I.
Thanks all members.
jet
 
Posts: 69
Joined: Wed Mar 05, 2014 2:23 am

Re: Descending while flying forward/backward [resolved]

Postby EX_TRUE » Wed Apr 22, 2015 10:02 am

Hi jet, I have the same problem for a long time.

Which topic disucussion did you refer to.
What do you mean by calibrate altitude override.

Thanks.
EX_TRUE
 
Posts: 51
Joined: Mon Nov 10, 2014 8:57 am

Re: Descending while flying forward/backward [resolved]

Postby plexus » Wed Apr 22, 2015 11:25 am

plexus
 
Posts: 534
Joined: Tue Jul 03, 2012 3:30 pm
Location: South of France

Re: Descending while flying forward/backward [resolved]

Postby EX_TRUE » Fri Apr 24, 2015 3:05 am

Thanks.

But it won't be altitude override calibrate case(Adjusting the Throttle Factor), because the condition mention here only happen when forward/backward not left/right.

Why decreasing NAV_SPEED_P and NAV_SPEED_I could resolve this case.

Best regards.
EX_TRUE
 
Posts: 51
Joined: Mon Nov 10, 2014 8:57 am

Descending while flying forward/backward [resolved]

Postby Luxar » Fri Apr 24, 2015 12:02 pm

Moin !
I have the same problem, but also when moving left / right.
Testing it in/outdoors, with and without gps look, all pids tuned without success.
If the copter stays in PH in place, then all ok. In manual mode also all ok , too...but if I command for/back/left or right , it loses high....but I goes back to the start high...
But every time I start moving it goes down...
Some ideas?
Greetings from Germany - Ralf
Luxar
 
Posts: 53
Joined: Mon Dec 30, 2013 12:20 pm

Re: Descending while flying forward/backward [resolved]

Postby Max » Fri Apr 24, 2015 4:35 pm

You guys could try re-doing the level calibration (tare). And/or verify your calibration using these steps (at least in Part 1): http://autoquad.org/wiki/wiki/configuri ... -influence

-Max
Max
 
Posts: 2814
Joined: Mon Aug 13, 2012 9:45 pm
Location: Near Ithaca, NY, USA

Re: Descending while flying forward/backward [resolved]

Postby jet » Sat Apr 25, 2015 9:31 am

Hi, all.
If your AQ6 had a DIMU, don't forget to put a foam under the DIMU (http://autoquad.org/wiki/wiki/autoquad- ... arometers/).

To Luxar:
You could try to decrease Nav distance p (http://autoquad.org/wiki/wiki/configuri ... eshooting/).
Do you check altitude override, ACC and MAG as well as Max's suggestion?

To EX_TRUE:
If you did not check altitude override, when flying forward/backward, AQ6 ascended/descended of course.
If altitude override is OK, you could read this: viewtopic.php?f=36&t=4427

Anyway, tuning needed time and reading wiki and discussions again and again.
Wish these suggestions are helpful.
jet
 
Posts: 69
Joined: Wed Mar 05, 2014 2:23 am

Descending while flying forward/backward [resolved]

Postby Luxar » Sat Apr 25, 2015 10:20 am

@ max and jet :
Thanks for your help ! I check it later after work
Greetings from Germany - Ralf
Luxar
 
Posts: 53
Joined: Mon Dec 30, 2013 12:20 pm

Descending while flying forward/backward [resolved]

Postby Luxar » Mon Apr 27, 2015 7:26 pm

I check all suggestions ! Made new tare/ onboard calibration.
Than checked MAG and ACC with this results: if the copter stays level, MAG magnitude is around 1.8 , if I turn the copter left (45 degrees) the MAG magnitude goes to 2 . If I turn it right (45 degrees) it goes to 1.75 ...

I make the tare / onboard calibration if the weather are better again
Greetings from Germany - Ralf
Luxar
 
Posts: 53
Joined: Mon Dec 30, 2013 12:20 pm

Next

Return to PID Tuning

Who is online

Users browsing this forum: No registered users and 1 guest

cron