You can estimate both continuous-time or discrete-time grey-box models for data with the following characteristics:
Time-domain or frequency-domain data, including time-series data with no inputs.
Nonlinear grey-box models support only time-domain data.
Single-output or multiple-output data
You must first import your data into the MATLAB® workspace.
You must represent your data as an
idfrd object. For more information about
preparing data for identification, see Data Preparation.