User`s guide

Building LTI Arrays
4-19
where
• is the maximum of the number of states in each model in the array.
• is the number of inputs in each model.
• is the number of outputs in each model.
• are the lengt h s o f the array d imensions.
Specifying Arrays of FRD Models Using frd
To specify a K-dimensional array of p-outpu t, m-input FRD models for which
are the lengths of the array dimensions, use
sys = frd(response,frequency,units)
where
•
frequency is a r eal vec t or of n frequency data points common to all FRD
models in the LTI array.
•
response is a p-by-m-by-n-by- -by- -by- complex-valued
multidimensional array.
•
units is the optional string s pecify ing ' rad/s'or'Hz'.
NotethatforspecifyinganLTIarrayofSISOFRDmodels,
response can also
be a multidimensional array of 1-by-n matrices whose remaining dimensions
determine the array d imension s of the FRD .
N
s
N
u
N
y
S
1
S
2
… S
K
,,,
S
1
S
2
…S
K
,,,
S
1
…
S
K