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Robust Controllers

Frequency-domain MIMO controller design, controller design for uncertain systems

Robust Control Toolbox™ provides tools for tuning or synthesizing robust controllers. Use the systune command or Control System Tuner app to achieve robust performance when tuning control systems to high-level design requirements you specify, such as reference tracking, disturbance rejection, stability margins, and loop shapes. These tools can robustly tune control systems modeled in MATLAB® or Simulink®.

The toolbox also includes algorithms for synthesizing robust MIMO controllers directly from frequency-domain specifications of the closed-loop responses. For example, you can limit the peak gain of a sensitivity function to improve stability and reduce overshoot, or limit the gain from input disturbance to measured output to improve disturbance rejection. Using mu-synthesis algorithms, you can optimize controller performance in the presence of model uncertainty, ensuring effective performance under all realistic scenarios.