To obtain an uncertain state-space model from a model that contains Uncertain State Space blocks, use the following steps:
Note If you do not have Uncertain State Space blocks in the model but still want to obtain an uncertain state-space model, see Specify Uncertain Linearization for Core or Custom Simulink Blocks.
(Prerequisite) In the Simulink model, specify the linearization input and output points using Simulink Control Design™ getlinio or linio commands. For more information, see Specify Model Portion to Linearize in the Simulink Control Design documentation.
(Prerequisite) If you have not already done so, specify uncertainty in the Simulink model as described in Specify Uncertainty Using Uncertain State Space Blocks.
Run ulinearize to compute an uncertain linearization. This command returns an uss model.
For more information on linearization and how to evaluate the results, see Linearization Basics in the Simulink Control Design documentation.