Damping ratio computing from a MATLAB plot

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A K M Kamrul Hasan
A K M Kamrul Hasan el 7 de En. de 2020
Comentada: sudhir ravipudi el 25 de Jul. de 2020
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 comentario
sudhir ravipudi
sudhir ravipudi el 25 de Jul. de 2020
Use prony analysis using prony Toolbox. That will give your requirements.
Regards,
R Sudhir

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KSSV
KSSV el 7 de En. de 2020
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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