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针对一类可变后掠翼的变体飞行器,研究了全包线控制器的设计与综合方法.建立了基于切换多胞系统的变体飞行器模型,所提出的框架利用Lyapunov函数方法分析系统的稳定性,能够从理论上保证变体飞行器在全包线下的飞行稳定.给出了利用小凸包算法从三维飞行包线中选取设计点的方法,并对各设计点处的线性化模型设计了最优控制律.为继承传统增益调参方法的优势,提出了一种特殊的控制器插值方法,保证变体飞行器三维包线下的控制综合过程简便实用.仿真结果表明所提出的控制方法在飞行器快速变形和参数大范围快速变化的情况下仍具有良好的控制性能.
Aiming at a kind of variant aircraft with variable swept-back wing, the design and synthesis method of all-envelope controller is studied. A variant aircraft model based on switching multiple-cell system is established. The proposed framework uses Lyapunov function method to analyze the performance of the system Stability, which can theoretically guarantee the flight stability of variant aircraft under all-envelope.A method for selecting design points from three-dimensional flight envelope using small convex hull algorithm is given, and the linearization model The optimal control law is designed.To inherit the advantages of the traditional method of gain adjustment, a special method of controller interpolation is proposed to ensure the control synthesis process of the variant aircraft under three-dimensional envelope is simple and practical.The simulation results show that the proposed control The method still has good control performance under the conditions of rapid deformation and rapid wide-range parameter changes.