pexcit - Level of excitation of input signals
Syntax
Ped = pexcit(Data)
[Ped.Maxnr] = pexcit(Data,Maxnr,Threshold)
Description
Data is an iddata object
with time- or frequency-domain signals.
Ped is the degree or order of excitation
of the inputs in Data. A row vector of integers
with as many components as there are inputs in Data.
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.
Maxnr is the maximum order tested. Default
is min(N/3,50), where N is the
number of input data.
Threshold is the threshold level used to
measure which singular values are significant. Default is 1e-9.
References
Section 13.2 in Ljung (1999).
See Also
 | pem | | plot |  |
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