I have a quite noisy signal from an aero dynamic experiment. I need to find out how smooth my signal oscillates or more precisely if my system skips an oscillation ever once in a while.
I have implemented a Butterworth filter which works quite well, nevertheless I struggle to quantify if the system skips oscillations.
My idea was to compute an average oscillation (the average alle oscillations to receive one average oscillation). And then compare each oscillation to the average and if the deviation is too large it should be marked.
Am I taking the right approach? Is there a function to with does this?
Here the system oscillates smoothly:
Here the system oscillates badly: