How should I exactly process the vertical acceleration signal (with respect to time) to be able to adapt it on the ISO2631 curves (as attached). As far as I know, First I should find rms of the acceleration, then FFT and after that 1/3 octave filter. is there any matlab code for this process? or any pdf that help with using iso2631 figure?
another question is, what if the peak point of the fft curve of the acceleration signal does not meet one of the ISO2631 curves (as shown in the attached picture)? Is there any interpolation method to find the exact amount of time that the human body can endure the vibration in this case?
Hi Iman,
It is not clear to me what you want to do. Are you just trying to perform a frequency weighting of some acceleration time histories? Or are you trying to verify whether some vibration exposure exceeds certain limits?
Importantly, to which version of ISO 2631 are you referring? I am not sure you are referring to the last one (1997 edition with amendment 1 published in 2010).
Francesco
Iman Soodmand - Is this still an open question? Happy to help if not yet solved.
Some years ago I found this matlab script to calculate the ISO2631 parameters.
https://github.com/janiex/SimulinkMatlab/blob/master/Matlab/ISO2631.m
Is not my work and I´m not sure if it is correct, but I think it could help you to figure out how to apply the ISO2631.
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