一种可变形机翼的变形策略及其协同控制

Morphing wing strategy of a deformable wing and its cooperative control

针对可变形机翼的变形及其协同控制问题,本文提出了一种保证变形翼面光滑且便于实施控制的变翼型策略,设计了一种基于交叉耦合的分布式同步控制器,很好地解决了翼型变形过程中的同步问题。通过计算流体力学仿真方法,分析了变翼型对气动参数的影响特性,以及变翼型对变形装置负载的影响。本文建立了翼型变形系统的动力学模型,提出了一种交叉耦合同步偏差生成方法,利用同步偏差表征同步性能,设计了分布式同步控制器使同步偏差收敛到零,在实现翼型变形的同时保证变形同步。通过数值仿真验证了该协同控制方法的有效性和稳定性。相比于并行控制方法,本方法的同步性能和稳态性能均有显著提升。

Aiming at the morphing and cooperative control of deformable wings,this paper proposes a variable airfoil strategy to ensure the smoothness of the variable airfoil and facilitate the implementation of control.A cooperative controller based on cross-coupling is also designed to solve the synchronous problem in the process of airfoil morphing.First,this paper analyzes the influence characteristics of wing morphing on aerodynamic parameters and the load of the morphing device through the computational fluid dynamics simulation method.Second,a dynamics model of the airfoil morphing system is established in this paper,and a cross-coupling synchronization error generation method,which uses synchronous deviation to represent synchronization performance,is proposed.A distributed synchronous controller is also designed,ensuring the convergence of synchronization errors to zero.The wing is morphed into the desired one,and all morphing devices act cooperatively in the process.Finally,the effectiveness and stability of the cooperative control method are verified by numerical simulation.Compared with the parallel control method,the synchronization and steady-state performances of this proposed method are significantly improved.