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Inicio  /  Aerospace  /  Vol: 10 Par: 4 (2023)  /  Artículo
ARTÍCULO
TITULO

Predefined-Time Heading Control for a 9-DOF Parafoil Recovery System Subject to Internal Relative Motions

Yiming Guo    
Jianguo Yan    
Xiaojun Xing    
Xiwei Wu and Lingwei Li    

Resumen

This paper addresses the challenging problem of predefined-time heading control of a parafoil recovery system (PRS) with internal relative motions and external disturbance. On the basis of the PRS described by a 9-degree-of-freedom model, a simplification and equivalent model is first derived, which is convenient to design control law. Then, a predefined-time disturbance observer is provided to estimate the lumped disturbance caused by internal relative motions and apparent mass. With the application of the disturbance estimation, a predefined-time heading controller is developed for the PRS. The control system is proven to be predefined-time stable by Lyapunov theory. Simulation results illustrate that the proposed method has better control performance than finite-time and PID controllers.

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