Composite-airfoil-plate with embedded macro-fiber-composites: Aero-thermo-electro vibration analysis and active control

Abstract

With the rapid development of aerospace technology, fiber reinforced composites (FRCs) have been widely used because of their excellent mechanical properties, especially composite airfoil plates with non-rectangular geometric characteristics (CAPs-NRG). Aiming at the complex vibration behavior of these structures, which may be caused by aerodynamic pressure and thermal load in high altitude and supersonic environments, a novel active vibration control design scheme of embedded macro fiber composites (MFCs) is proposed in this paper. Firstly, a dynamic modeling method of aero-thermo-electro coupling based on the penalty function method is developed to describe the dynamic response of CAPs-NRG with embedded MFCs accurately. The rationality of the model is verified by comparing it with the literature and the finite element method. Secondly, to deal with the adverse effects of complex aerodynamic loads and environmental noise on control performance, an adaptive hybrid control algorithm of the filtered-proportional differential-linear quadratic regulator (F-PD-LQR) based on the power change is designed to achieve more precise and reliable vibration control. Furthermore, the influence of geometric parameters of CAPs-NRG on flutter behavior is discussed, and the effectiveness of the proposed control algorithm under different aerodynamic pressure and temperature conditions is evaluated. Through the above research, this paper provides an efficient and reliable flutter control solution for CAPs-NRG and lays a foundation for ensuring flight vehicle safety.