(Answers dev) Rough translation
question: Derivation of amplitude using Fourier transform on Simulink
body: I would like to find the amplitude of a certain frequency component as shown in the attached picture (FullSizeRender) formula, and use it for control, how can we reproduce it on Simulink? The input signal is a signal which varies depending on the position of the rotor of the motor, and it is necessary to continuously calculate the amplitude and continue to send.
For the time being, I tried using a program like the attached picture (testFFT) using the Embedded Matlab function, but it did not function at all (the value of the output graph was zero). Although it may seem appropriate to look at the formula, I did not understand how to use the grammar itself of FFT which I confirmed on the official HP as it is.
The input signal is a high frequency voltage signal generated on Simulink. Once it is superimposed with another signal, only the high frequency component is extracted and it is the input signal. It means that the vector value must be input, but I do not even know whether this is a vector value. Also, if not, how can we convert it?
Also, first of all, doing FFT with obtaining the amplitude like the attached picture (FullSizeRender) itself is wrong, should we combine definite integral expressions etc? I could not reproduce the method of definite integration itself, but I would be pleased if you could let me know.
I am immature and ashamed, but I am pleased if you can advise me. Thank you.
