System Identification Toolbox

The Model and Data Boards

System Identification is about data and models and creating models from data. The main information and communication window ident, is therefore dominated by two tables:

• A table over available data sets, each represented by an icon
• A table over created models, each represented by an icon

These tables will be referred to as the Model Board and the Data Board in this chapter. You enter data sets into the Data Board by:

• Opening earlier saved sessions.
• Importing them from the MATLAB workspace.
• Creating them by detrending, filtering, selecting subsets, etc., of another data set in the Data Board.

Imports are handled under the pop-up menu Data while creation of new data sets is handled under the pop-up menu Preprocess. Handling Data deals with this in more detail.

The models are entered into the summary board by:

• Opening earlier saved sessions.
• Importing them from the MATLAB workspace.
• Estimating them from data.

Imports are handled under the pop-up menu Models, while all the different estimation schemes are reached under the pop-up menu Estimate. More about this in Estimating Models.

The Data and Model Boards can be rearranged by dragging and dropping. More boards open automatically when necessary or when asked for (under menu Options).

The Graphical User Interface

The Working Data