Curve variation and point detection

1 view (last 30 days)
Louise
Louise on 19 Nov 2020
Answered: Rohit Pappu on 24 Nov 2020
Hi all,
You could find enclosed a vibration signal (vibration_illustration.pdf).
My goal is to detect (automatically if possible) the first and second impact.
I also attach the signal (.mat)
Do you have any ideas of doing that ?
Thanks in advance for your help,
Louise

Accepted Answer

Rohit Pappu
Rohit Pappu on 24 Nov 2020
%% Location of first peak
[pk1,loc1] = findpeaks(Signal, 'MinPeakHeight',0.15)
%% Location of second peak
subSignal = Signal(1,500:end);
[pk22,loc2] = findpeaks(subSignal, 'MinPeakHeight',0.06)
%% The point preceding the peak may not be the point of deflection
desiredlocs = [loc1-3 loc2+500-6];

More Answers (0)

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by