How to create a frequency bode plot with FFT in Matlab from an output in Simulink

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Jorge Castello
Jorge Castello 2020-2-17
回答： Rhea Chandy 2021-5-7
I have a Quarter-vehicle suspension model (2 Degrees of Freedom) designed in simulink with two different time outputs from each mass ('To Workspace' block).
Then, I'd like to know how to import the data from the outputs to Matlab in order to develop a FFT function.
Finally, I don't know how to create in Matlab a FFT function with a bode plot between two determined frequencies to appreciate the amplitude of the different outputs.
Kind regards.

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回答（1 个）

Rhea Chandy
Rhea Chandy 2021-5-7
Hello Jorge,
This previously answered question : How to plot bode plot from FFT data may give you an idea of where to start.
To develop the fft, take a look a look at the examples in this documentation page: Fast Fourier transform (mathworks.com)

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