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How to perform a FFT on a time domain waveform in Simulink.

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Olando Fraser
Olando Fraser 2016-1-13
回答： Sabin 2023-2-11
Good day, I am Olando Fraser a final year student at the University of the West Indies, St. Augustine Campus. I am doing a Simulation of a BLDC motor usinf Simulink. I want to do a FFT on the current waveform of my motor which is a time domain waveform. other than using the FFT block in simulink I was told I can save the waveform in a data file and use this in matlab with the fft funtion in matlab. Can anyone help me with this please. I want to know how to save the waveform and how can i use it to do an FFt in matlab. Thank you

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Sabin
Sabin 2023-2-11
For an example of how to write data to the workspace and to a file respectively check:
https://mathworks.com/help/simulink/slref/output-simulation-data-with-blocks.html
For more insights about how to use the fft function check:
https://mathworks.com/help/matlab/ref/fft.html

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