How to draw bode diagram with measured data?
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i get sampling data of motor's input x(t)[current] and output y(t)[position] with length [1x90000], sample frequency 2000.
But i don't know how to get the bode digram of the transfer function in frequncy domain(Y(s)/X(s)).[the plot with magnitude in y-axis(dB), frequency in x-axis(10^n)]
And also the angle of the transfer function.
if true
% code
end
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Arkadiy Turevskiy
2015-2-12
There are a couple of options: you can use System Identification Toolbox, see here . Another option is tfestimate from Signal Processing Toolbox.
Lastly, you can compute FFTs on your own.
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Mehdi Ghasem Moghadam
2017-4-20
Hi Arkadiy. Would you please give me an example for sketching Bode diagram via FFT computation. Cheers
Victor Tibanlombo
2018-2-27
Sorry; Could you solve your question? about: How to draw bode diagram with measured data? because i have the same question and I do not know how to graph the bode diagram via FFT computation.
Cheers
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