MATLAB CONTROL SYSTEM TOOLBOX 9 Spécifications télécharger pdf (Page 132)

100

101

5 Arrays of LTI Models

5-20

Indexing Into LTI Arrays

You can index into LTI arrays in much the same way as you would for

multidimensional arrays to:

•Access models

•Extract subsystems

•Reassign parts of an LTI array

•Delete parts of an LTI array

When you index into an LTI array

sys, the indices should be organized

according to the following format

where

•

Outputs are indices that select output channels.

•

Inputs are indices that select input channels.

• are indices into the array dimensions that select one model or a

subset of models in the LTI array.

Note on Indexing into LTI Arrays of FRD models: For FRD models, the

array indices can be followed by the keyword

'frequency' and some

expression selecting a subset of the frequency points as in

sys (outputs, inputs, n1,...,nk, 'frequency', SelectedFreqs)

See “Referencing FRD Models Through Frequencies” on page 3-7 for details on

frequency point selection in FRD models.

Accessing Particular Models in an LTI Array

To access any given model in an LTI array:

•Use colonarguments (

:,:) for the first two indices to select all I/O channels.

sys(Outputs, Inputs, )n

…

1 2 ... 127 128 129 130 131 132 133 134 135 136 137 ... 590 591

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MATLAB CONTROL SYSTEM TOOLBOX 9 Spécifications Page 132

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