Arrays of LTI Models (Creating and Manipulating Models)

Creating and Manipulating Models

Dimension Requirements

In general, when you apply any of these basic operations to two or more LTI arrays:

The I/O dimensions of each of the LTI arrays must be compatible with the requirements of the operation.

The lengths of array dimensions must match.

The I/O dimensions of each model in the resulting LTI array are determined by the operation being performed. See Chapter 3, "Operations on LTI Models," for requirements on the I/O dimensions for the various operations.

For example, if sys1 and sys2 are both 1-by-3 arrays of LTI models with two inputs and two outputs, and sys3 is a 1-by-3 array of LTI models with two outputs and 1 input, then

```
sys1 + sys2
```

is an LTI array with the same dimensions as sys1 and sys2.

```
sys1 * sys3
```

is a 1-by-3 array of LTI models with two outputs and one input, and

```
[sys1,sys3]
```

is a 1-by-3 array of LTI models with two outputs and three inputs.

Example: Addition of Two LTI Arrays Special Cases for Operations on LTI Arrays