Stabilization, Rescue mode.... rudder gain...

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cropduster
Posts: 46
Joined: Sun 14. Dec 2014 15:00:56

Hi,

I am using bank switching on channel 5 and want to use stabilization and rescue mode on bank 1 and 2. Do I understand correctly that I need to set rudder gain to -60 if I wnat to use those two modes and heading lock with 60% gain?

What happens if rudder gain remains at +60% in those two banks, like I have on bank 0 for normal rigid mode?

Thanks,

Michael

P.S.: Is there any abbreviation guide? I understand that HL means heading lock, but HF means?
ZeXx86
Site Admin
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Hi,

yes, you are right.

If you configure +60% gyro gain then only Head Lock mode will be activated without stabilisation/rescue mode.
So then you can fly as with Bank 0.

HF .. Head Lock + Special Function
HL .. only Head Lock
Spirit System developer
cropduster
Posts: 46
Joined: Sun 14. Dec 2014 15:00:56

great, so this is what I need to configure:

Bank 0: rudder gain +60, function 'disabled' = normal rigid mode with 60% head lock
Bank 1: rudder gain -60, function 'stabilisation' = "coax mode" with 60% head lock
Bank 2: rudder gain -60, function 'rescue acro' = rescue function with 60% head lock.

Thx,

Michael
ZeXx86
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Yes, this should be good.

No problem.
Spirit System developer
cropduster
Posts: 46
Joined: Sun 14. Dec 2014 15:00:56

Hi there,

another question for rudder gain: Changing rudder gain value also changes the rudder limits. I was expecting that changing rudder gain just changes how strong the system reacts to wind or keeps the tail steady, but not limiting servo limits.

Did I miss anything?

Michael
ZeXx86
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Hi,

if you can observe that it can't reach ends then your gain is extremely low. If you increase gain to normal level, it will work all the time to the limits.
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cropduster
Posts: 46
Joined: Sun 14. Dec 2014 15:00:56

Hi,

I am at 60% rudder gain and it fully uses its limits on rudder input. But if I change rudder gain to zero, it bareley moves on rudder input. Stick movement almost causes no rudder movement. But at 0 it should still reach its limits when I want rudder input, just system should behave less strong on external influences. I don't understand the reason for that. I never saw similar behavior on rudder gain on other fbl systems.
ZeXx86
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You can see exactly same behavior on for example Microbeast.
It is very normal, because regulation is not acting so strong. Input is always proportional to the regulation gain, else it will be much stronger.
We are using advanced adaptive regulations so it can simply behave very differently. Each gyro and flybarless system behaves differently on the ground.
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ajbwn
Posts: 50
Joined: Fri 24. Oct 2014 20:57:19

cropduster wrote:Hi,

I am at 60% rudder gain and it fully uses its limits on rudder input. But if I change rudder gain to zero, it bareley moves on rudder input. Stick movement almost causes no rudder movement. But at 0 it should still reach its limits when I want rudder input, just system should behave less strong on external influences. I don't understand the reason for that. I never saw similar behavior on rudder gain on other fbl systems.


I had the same thing but it was because I had the servo freq set wrong.
Regards Alan
cropduster
Posts: 46
Joined: Sun 14. Dec 2014 15:00:56

interesting... I have Walkera digital tail servo WK-2601H from the V450D01.. and frequency set to 50 Hz and impulse to 1520 μs, so standard.

P.S.: I just read somewhere that WK-2601 can go up to 200 or 333 Hz. Maybe I should try that.
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