Specifications

5 Arrays of LTI Models
5-24
Operations on LTI Arrays
Using LTI arrays, you can apply almost all of the basic model operations that
work on single LTI models to entire sets of models at once. These basic
operations include:
•The arithmetic operations: +,
–, *, /,\,',.'
•The functions: concatenation along I/O dimensions ([,], [;]), feedback,
append, series, parallel,andlft
When you apply any of these operations to two (or more) LTI arrays (for
example,
sys1 and sys2), the operation is implemented on a model-by-model
basis. Therefore, the kth model of the resulting LTI array is derived from the
application of the given operation to the kth model of
sys1 and the kth model
of
sys2.
For example, if
sys1 and sys2 are two LTI arrays and
sysa = op(sys1,sys2)
then the kth model in the resulting LTI array sys is obtained by adding the kth
models in
sys1 to the kth model in sys2
sysa(:,:,k) = sys1(:,:,k) + sys2(:,:,k)
You can also apply any of the response plotting functions such as step, bode,
and
nyquist toLTIarrays.Theseplottingfunctionsarealsoappliedonamodel
by model basis.