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Estimate Transfer Function Models at the Command Line

This topic shows how to estimate transfer function models at the command line.

Before you estimate a transfer function model, you must have:

Estimate continuous-time and discrete-time transfer function models using tfest. The output of tfest is an idtf object, which represents the identified transfer function.

The general workflow in estimating a transfer function model is:

  1. Create a data object (iddata or idfrd) that captures the experimental data.

  2. (Optional) Specify estimation options using tfestOptions.

  3. (Optional) Create a transfer function model that specifies the expected model structure and any constraints on the estimation parameters.

  4. Use tfest to identify the transfer function model, based on the data.

  5. Validate the model. See Model Validation.

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