Robust control of a morphing airfoil structure

This paper presents several robust control designs for a MIMO morphing airfoil concept. A linear aeroelastic model of the morphing wing is utilized to design an H/sub /spl infin// controller and a two degree of freedom H/sub /spl infin// loop shaping controller that track commanded lift and roll moments. These methodologies are developed, along with the robustness conditions for input multiplicative, and real parametric uncertainty in /spl omega//sub n/ and /spl sigmav//sub n/. The robustness of each of these controllers is then evaluated using these conditions and the structured singular value (SSV). Comments and discussion on these control methodologies are then drawn presented.