To compute the phase of a forced oscillation as a function of frequency in MATLAB, you can use the function angle
on the Fourier transform of the signal. Here is an example code snippet:
main.m552 chars21 lines
In this example, we first define a sample signal x
with a forced oscillation at 50 Hz. We then compute the Fourier transform of the signal using the fft
function, and the frequency vector using the sampling frequency and the length of the signal. Finally, we use the angle
function to compute the phase angle of each frequency component of the signal.
We can then plot the phase angle as a function of frequency using the plot
function. The resulting plot will show how the phase of the forced oscillation varies with frequency.
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