Level of excitation of input signals
Ped = pexcit(Data)
[Ped.Maxnr] = pexcit(Data,Maxnr,Threshold)
Ped = pexcit(Data) tests the degree of
persistence of excitation for the input.
iddata object with time- or frequency-domain
Ped is the degree or order of excitation
of the inputs in
Data and is a row vector of integers
with as many components as there are inputs in
The intuitive interpretation of the degree of excitation in an input
is the order of a model that the input is capable of estimating in
an unambiguous way.
[Ped.Maxnr] = pexcit(Data,Maxnr,Threshold) specifies
the maximum order tested and threshold level used to measure which
singular values are significant. Default value of
N is the number of input data. Default value
Section 13.2 in Ljung (1999).