A novel three-inflection-point sliding mode control framework for forward-tilting morphing aerospace vehicle with performance constraints and actuator faults  

作　　者：Xinkai LI Lei DOU Hongli ZHANG Yue MENG 

机构地区：[1]School of Electrical Engineering,Xinjiang University,Urumqi 830047,China

出　　处：《Chinese Journal of Aeronautics》2024年第8期293-310,共18页中国航空学报（英文版）

基　　金：co-supported by the Xinjiang Uygur Autonomous Region Natural Science Foundation,China(No.2022D01C86);the National Natural Science Foundation of China(No.62263030);the Open Research Fund Program of Beijing National Research Center for Information Science and Technology,China(No.BR2023KF02011).

摘　　要：A prescribed performance control scheme based on the three-inflection-point hyperbolic function and predefined time performance function is proposed to solve the trajectory tracking problem of the forward-tilting morphing aerospace vehicle with time-varying actuator faults.To accurately estimate the loss degree of actuator faults,an immersion and invariance observer based on the predefined time dynamic scale factor is designed to estimate and compensate it.A composite dynamic sliding mode surface is designed using a three-inflection-point hyperbolic function,and a novel three-inflection-point sliding mode control framework is proposed.The convergent domain of the sliding manifold is adjusted by parameters,and the system error convergence is controllable.A transfer function is designed to eliminate the sensitivity of the three-inflection-point hyperbolic sliding mode to the unknown initial state,and combined with the barrier Lyapunov function,and the performance constraint of the system is realized.The global asymptotic stability of the system is demonstrated using a strict mathematical proof.The effectiveness and superiority of the proposed control scheme are proven by simulation experiments.

关 键 词：Morphing aerospace vehicle Actuator faults Immersion and invariance Three-inflection-point sliding mode control Prescribed performance control 

分 类 号：V249[航空宇航科学与技术—飞行器设计] V448