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
am 12 Feb. 2015
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
am 20 Apr. 2017
Hi Arkadiy. Would you please give me an example for sketching Bode diagram via FFT computation. Cheers
Victor Tibanlombo
am 27 Feb. 2018
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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