不对称机翼损伤飞机特性分析与增量容错控制（先进飞行器安全控制专栏）

doi:10.7527/S1000-6893.2025.32501

Abstract

Abstract: To enhance the flight safety of aircraft with wing damage, this paper investigates the aerodynamic and dynamic characteristics of asymmetric wing damage and proposes an incremental fault-tolerant control method based on an improved predefined-time theory. First, CFD calculations are conducted to analyze the effects of wing-tip truncation and perforation damage on aerodynamic performance. Based on the above aerodynamic characteristics, a six-degree-of-freedom nonlinear model of the aircraft with asymmetric wing damage is established. Three representative trim strategies are then analyzed, and their applicability is discussed through comparative case studies. Subsequently, the existing prede-fined-time control theory is improved to accelerate convergence and address the mismatch between theoretical convergence time and user-defined time. On this basis, an incremental fault-tolerant controller is developed for the damaged aircraft, and the stability and predefined-time convergence of the closed-loop system under wing damage are rigorously proven using Lyapunov theory. Finally, the effectiveness and superiority of the proposed incremental trajectory fault-tolerant control scheme are validated through both numerical simulations and real-time experiments.

Key words: Asymmetric wing damage, Trim strategy of damaged aircraft, Fast predefined-time control, Trajectory incremental fault-tolerant control, Real-time simulation experiments.

CLC Number:

V249.1

References

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Analysis of aircraft characteristics with asymmetric wing damage and incremental fault-tolerant control

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