摘要
研究了伸缩翼飞机变形飞行过程的动力学建模与鲁棒控制问题,以分析机翼变形对飞机性能的影响机理,并实现机翼变形时的平稳飞行。首先通过气动仿真分析构建了伸缩翼飞机气动参数与机翼变形的关联函数,进而建立了变形飞行的动力学模型。在此基础上提出了一种新的滑模变增益控制(sliding mode gain-scheduled control,SMGSC)策略,更好地保证闭环系统的全局稳定和鲁棒性能。仿真结果表明,机翼伸缩能直接改变飞机的气动特性和运动模态;SMGSC能更好地保持伸缩翼飞机变形飞行时的状态稳定,并消除复合干扰的影响;伸缩翼飞机通过机翼变形可以减少50%的燃油消耗实现同样的飞行任务,具有重要的性能优势。
To analyze the effect of wing deformation on the aircraft performance, and realize steady flight of the aircraft during morphing, the dynamic modeling and the robust control for the telescopic-wing aircraft in flight during morphing are studied. First, the aerodynamic parameters of the telescopic-wing aircraft are estab- lished as functions of wing deformation via simulation and analysis. The dynamic models of the telescopic wing aircraft in flight during morphing are constructed subsequently. Then, a novel sliding mode gain-scheduled con- trol （SMGSC） strategy is proposed to guarantee the global stability and robustness of the closed-loop plant. The simulation results show that, the aerodynamic performance and the motion modes of the telescopic-wing aircraft can be affected by the wing deformation. The proposed SMGSC can provide a higher stability and a stronger dis turbance rejection for the telescopic-wing aircraft in flight during morphing. The telescopic-wing aircraft can perform the same flight task with 50% less fuei consumption through wing deformation, which means a great advantage over conventional aircraft.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2015年第11期2554-2560,共7页
Systems Engineering and Electronics
基金
国家自然科学基金(91016017
61304139)
江苏省自然科学基金(BK20130234
BK20130806)
江苏省高校自然科学基金(13KJD510003)资助课题
关键词
伸缩翼飞机
变形飞行
动力学建模
滑模变增益控制
燃油消耗
telescopic-wing aircraft
flight during morphing
dynamic modeling
sliding mode gain sche-duled control （SMGSC）
fuel consumption
