Stabilised mode : servo operation travel

[marc]

Hi,

Why is servo travel reduced in the stabilized mode compared to the manual mode.
In the manual mode the servo travel is +/-80° when I move the RC transmitter stick.
In stabilized mode the servo travel is +/-20° when I move the RC transmitter stick.

I expected to have same servo travel in both mode (when using the transmitter stick) and that the autopilot adds its correction on top of these values...

Is there something I misunderstood?

Cu
Marc

[lukasz]

This depends on the settings that you entered in Control tab:

control.JPG (61.75 KiB) Viewed 5477 times

And under PID tab:

PID.JPG (62.38 KiB) Viewed 5477 times

Here are the details how to configure those:
http://gluonpilot.com/wiki/Stabilized_flight

[marc]

Thanks Lukasz,

Probably my question was not 100% clear... I already read the wiki and configured my plane as suggested.
My "autopilot behavior expectation" was that if I give on the RC transmitter full roll to the right, I expected the servo to turn full roll to the right until the Max rool =(eg the 45° of your post) is nearly reached...and then the PID takes the control over to maintain the roll on 45°....

Do I be wrong somewhere?

Marc

[Tom]

Hi Marc,

about your roll example: if your aileron isn't moving enough, you should increase the "P" (of the PID-tab) of the roll 2 aileron group. It shouldn't be it's maximum position. This would be too much. If you fly your plane manually, you never give full aileron deflections as well
The "max roll angle", is the maximum angle of your plane. If it's 45°, your plane will never have a roll angle of over 45° (in both stabilized and navigation mode).
As a rule of thumb I can say that the aileron deflection in stabilized mode is usually less than you would expect. On a fast funjet it is only a few millimeters.

Tom