: Combine these elements with standard LTI objects (like tf or ss ) to create an uncertain state-space ( uss ) model. 2. Robust Stability and Performance Analysis
) to ensure performance across the entire range of uncertainty.
: Use robgain to determine if the system meets specific performance goals (like H∞cap H sub infinity end-sub gain) across all uncertainty scenarios.
: Use wcgain to identify the specific combination of uncertain parameters that results in the worst performance. 3. Controller Synthesis Techniques
norm of the closed-loop system, effectively suppressing the impact of disturbances and noise. -Synthesis : Use musyn for more complex problems where H∞cap H sub infinity end-sub
: Use ultidyn to represent dynamic uncertainty, often used to account for high-frequency behavior that isn't captured in the nominal model.