Output feedback H∞ control of constrained linear systems

The problem of output feedback H∞ control for a class of constrained linear systems is studied in this paper. A sufficient condition for the existence of the H∞ output feedback controllers is proposed. Furthermore, the solution scheme is formulated in terms of linear matrix inequalities (LMIs). Finally, an aircraft model and a quarter car active suspension model are exploited to illustrate the effectiveness of the proposed method.