Use the Uncertain State Space block to represent uncertain elements in a Simulink® model.
Simulate uncertain systems using nominal values or samples within the uncertainty range.
For simple models with few uncertain variables, you can vary uncertainty values on a block-by-block basis.
For models with a large number of uncertain variables or multiple Uncertain State Space blocks, you can vary multiple uncertainty values simultaneously.
This example illustrates how to compute the stability margins of the
airframemargin model and compare the results with stability margins
computed using the linearized model.
Robust Control Toolbox™ software provides tools for modeling and analyzing uncertainty in Simulink models.
Toolbox provides the
loopmargin command to analyze the stability
margins of LTI models created in MATLAB® and Simulink models.