Creating and Manipulating Models

LTI Model Formats

You can specify LTI models as:

• Transfer functions (TF), for example,

• Zero-pole-gain models (ZPK), for example,

• State-space models (SS), for example,

• where A, B, C, and D are matrices of appropriate dimensions, x is the state vector, and u and y are the input and output vectors.

• Frequency response data (FRD) models

• FRD models consist of sampled measurements of a system's frequency response. For example, you can store experimentally collected frequency response data in an FRD.

Linear, Time-Invariant Models

Using LTI Models

© 1994-2005 The MathWorks, Inc.