Governor hesitate

[jinchengde]

Hi
I tried my 26cc engine helicopter with build-in governor function, and have some throttle cough issue with rc8 output wave

the log file attachment
https://drive.google.com/file/d/10nLftIXHKKgLvaDCH-mGGyiwL40EdShX/view?usp=sharing
I set the governor parameter as
H_RSC_GOV_SETPNT 1300
H_RSC_GOV_DISGAG 18
H_RSC_GOV_DROOP 20
H_RSC_GOV_RANGE 100
H_RSC_GOV_TCGAIN 50

I tried the H_RSC_GOV_DROOP from 85 , 60, 40, 20, but no effecitve for the hesitate issue

[Ferrosan (Ferruccio Vicari)]

Hi, your throttle curve is too far from the setpoint rpm. So the governor keeps going in and out:

You need to raise your throttle curve so rpm are within setpoint (+/-50-70 rpm) using H_RSC_MODE_3 (throttle curve without governor).
Only after you have tuned this, set H_RSC_MODE to 4 (Closed loop + throttle curve) and perform tuning of the governor parameters.

[jinchengde]

@Ferrosan @bnsgeyer
for the version 4.2, I have better governor performance