Optimal Control of Pretwisted Adaptive Rotating Blades Modeled as Anisotropic Thin-Walled Beams with Piezo-Composite

Problems related to mathematical modeling and optimal dynamic control of pretwisted adaptive rotating blade are considered. The blade is modeled as a thin-walled beam accounting for nonclassical effects, such as anisotropy, transverse shear and warping inhibitions. The adaptive capabilities are provided by the actuators manufactured by anisotropic piezo-composite layers embedded into the structure. The linear quadratic regulator feedback control strategy is adopted to study the dynamic behavior on vibration suppression. The control authority of the implementation of piezo-actuators with different ply-angles, considered in conjunction with that of the structural tailoring, are highlighted.