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飞机结构受损会导致飞机质量、重心和气动特性发生突变、对称性破坏以及较强的运动耦合,严重影响飞行安全。以机翼受损飞机为研究对象,采用质量微元法建立重心偏移飞机的动力学模型,分析其动态特性,并设计了基于自抗扰控制的姿态控制器。仿真结果表明,自抗扰控制器表现出良好的控制性能,针对突然受损情况设计的控制器具有较强的鲁棒性,能实时补偿结构受损引起的干扰力矩,快速准确地跟踪控制指令。
Damage to the aircraft structure can lead to sudden changes in the aircraft’s mass, center of gravity and aerodynamic characteristics, symmetrical damage and strong coupling of movements, seriously affecting flight safety. Taking the airplane with damaged wing as the research object, the dynamic model of aircraft with center of gravity offset is established by mass micro-element method, and the attitude controller based on ADRC is designed. The simulation results show that the ADRC controller shows good control performance. The controller designed for sudden damage has strong robustness, can compensate the disturbance moment caused by structural damage in real time, and can track the control instruction quickly and accurately .