Creating and Manipulating Models

When to Collect a Set of Models in an LTI Array

You can use LTI arrays to represent

• A set of LTI models arising from the linearization of a nonlinear system at several operating points
• A collection of transfer functions that depend on one or more parameters
• A set of LTI models arising from several system identification experiments applied to one plant
• A set of gain-scheduled LTI controllers
• A list of LTI models you want to collect together under the same name

Restrictions for LTI Models Collected in an Array

For each model in an LTI array, the following properties must be the same:

• The number of inputs and outputs
• The sample time, for discrete-time models
• The I/O names and I/O groups

Note    You cannot specify Simulink LTI blocks with LTI arrays.

Where to Find Information on LTI Arrays

The next two sections give examples that illustrate how to visualize an LTI array, its dimensions, and size. To read about how to build an LTI array, go to Building LTI Arrays. The remainder of the chapter is devoted to indexing and operations on LTI Arrays. You can also apply the analysis functions in the Control System Toolbox to LTI arrays. See Chapter 5, "Model Analysis Tools," for more information on these functions. You can also view response plots of LTI arrays with the LTI Viewer.

When to Use an LTI Array

Visualizing LTI Arrays

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