Quick question: servo's, which ones and how they work? Answered
I am looking into making a stabilized gimbal for a quadcopter, so when it is correcting for wind, quick swings left and right, the level of parasitic tilting and panning from the rotors corrections is minimized. I have a mobius camera I am planning to design the gimbal for, and was wondering if it is possible to modify analog servo's to make them make fine and slow adjustments smoother?
So far, I understand the operation includes a geared motor that drives the output as well as a feedback potentiometer, and apparently the input signal is a 60 Hz PWM signal. My question is; is it possible to incorporate some sort of Phased Locked Loop that will lock onto the PWM signal's duty cycle and phase, and convert it to a higher overtone or harmonic (Such the case with a PPL used as a frequency synthesizer) and feed this into the analog servo, will it be able to make fine adjustments better?
Also, why is the servo signal output PWM only go from like 1% duty cycle to 10%? Why does it not utilize a broader range such as 1% to 99%? I would think that this would allow the signal to have better resolution and theoretically allow better, more precise control of said servo. Also, can anyone explain the operation of the servo and how it deals with the signal input, the feedback (which is a voltage value and not a PWM source)?
Surely digital servo's would be better, but so far I have only found them in larger versions, and considerably more $$$. What is a good source for micro digital servo's if those happen to be the best things to use? Would it be possible to make modifications to analog servo's to get rid of the jerkiness and jitteriness with minor corrections while still maintaining that level of correction? (AKA not increase the dead band, or if need be, remove it entirely however that is done.)