Abstract
This paper presents a control design of gain scheduling controllers for active flutter suppression (AFS) in which the closed loop system is stabilized in the operating region specified in advance. The AFS system of a high-aspect-ratio wing is represented by a linearly interpolated polytopic model whose varying parameter is the dynamic pressure. The gain scheduling controller in this paper consists of a regulator and a full-order observer which are scheduled by the varying parameter. Linear matrix inequalities for designing the gains of the regulator and the observer are separately derived in the frame of the H2 optimization. The control performance and the characteristics of the designed gain scheduling controllers are evaluated in comparison with fixed H2 controllers which are designed with the same design parameters. As the result, the gain scheduling controllers may be inferior to the fixed controller at local regions, but are superior to the fixed controllers for the entire operating region.
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