I am trying to identificate the modal parameters of a sistem with 2 dof employing Modified Ibrahim Time Domain method. I need to get two significant digits accurancy and I think I am not able because of high frequency noise. If I apply fft, make 0 high frequencies, and then apply ifft to the...
I have already understood how to undo the change of coordinates; I hadn't realised that
the polynomial are ordered for the "freqs" function opposite to our formulation. I applied
normalisation to the polynomials, I employed q instead of q.^2 because that agrees
with the formulation I...
I think you could make your program more efficient by using half-range polynoms which would yield to half size matrix P, T and W; and also you could solve D and C separatelly. I made the second modification resulting on this source code:
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