Robust control of aircrafts using linear matrix inequalities

This article presents a new method for robust control of aircraft dynamic models using linear matrix inequalities and pole placement. The models are written in the form of polytopes, that describes the dynamic system linearized around some operating point. By using ljnear matrix inequalities, different control requisites, such as pole placement at different regions of the complex plane and norm minimization, can be grouped in one structure. Results of application for helicopter and fighter aircraft models show that the methodology guarantees stability and performance robustness for both dynamic systems.