Damping ratio computing from a MATLAB plot

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A K M Kamrul Hasan
评论： sudhir ravipudi 2020-7-25
Hi Altruists,
I have a MATLAB plot which I exported from Digsilent software and I am willing to calculate the damping ratio and natural frequency. What are the commands for that, may I know?
Regards,
Kamrul Hasanuntitled.jpg
  1 个评论
sudhir ravipudi
sudhir ravipudi 2020-7-25
Use prony analysis using prony Toolbox. That will give your requirements.
Regards,
R Sudhir

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采纳的回答

KSSV
KSSV 2020-1-7
For natural frequency you need to look into fft.
Damping ratio can be calculated using logarithamic decrement approach. https://en.wikipedia.org/wiki/Logarithmic_decrement

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