多级SMA驱动的结构功能一体化变弯度机翼设计及试验研究OA

Morphing wings enable aircraft to achieve optimal flight performance across diverse missions through adaptive aerodynamic shape changes,making variable-camber wings a key technology with broad application prospects in the future design of intelligent aircraft.To meet the demanding requirements for smooth and continuous camber variation,this paper proposes a novel variable-camber wing design that integrates structural and actuation functions into a unified system,utilizing a shape memory alloy(SMA)-reinforced spring steel plate and a multi-stage SMA actuation mechanism.Starting from a one-dimensional constitutive model,a two-dimensional model was derived.Combined with an equivalent stiffness calculation method for laminated plates,a mechanical model of the new morphing structure was established and validated through comparative finite element analysis.A prototype was developed and a test platform was constructed.A self-tuning step-response feedback closed-loop control strategy was implemented to achieve multi-state deformation control,verifying the feasibility of the proposed variable-camber wing design.This paper proposes an integrated lightweight structure-actuation system for smart morphing wings,offering practical insights to support the development of multi-scenario adaptive aircraft.