Journal of Systems Engineering and Electronics ›› 2026, Vol. 37 ›› Issue (3): 1019-1029.doi: 10.23919/JSEE.2026.000125

• CONTROL THEORY AND APPLICATION • Previous Articles    

Fault-tolerant control of hypersonic morphing vehicle based on the predefined-time disturbance observer

Yiheng LI1(), Wenjie ZHANG2,*(), Mingkai WANG3(), Qunli XIA1(), Yangxin LIU1()   

  1. 1School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China
    2Beijing Institute of Electronic System Engineering, Beijing 100854, China
    3Hangzhou Innovation Institute, Beihang University, Hangzhou 311115, China
  • Received:2024-12-12 Online:2026-06-18 Published:2026-06-29
  • Contact: Wenjie ZHANG E-mail:YIHENGLI727@163.com;l013763956@qq.com;wangmk@buaa.edu.cn;1010@bit.edu.cn;1459518359@qq.com

Abstract:

To address the attitude control problem under the uncertainty, external disturbance, and actuator failure, a predefined-time fault-tolerant control method based on a predefined time disturbance observer is proposed. First, the dynamics model of hypersonic morphing vehicle (HMV) is established, and the control system is designed as an outer-loop attitude angle control loop and an inner-loop angular rate control loop considering the actuator failure problem. Secondly, a predefined-time disturbance observer is designed to estimate the comprehensive disturbances, and compensate in the control law. By integrating back-stepping control with predefined-time theory, a predefined-time attitude tracking control method is proposed, enabling the convergence time of the attitude tracking error to be designed through a simple parameter. Rigorous Lyapunov function analysis has demonstrated that the attitude tracking error can converge to an arbitrarily small neighborhood around the origin within a predefined time, and all signals in the closed-loop system are bounded. Finally, comparative simulations validate the effectiveness of the proposed method.

Key words: hypersonic morphing vehicle (HMV), actuator failure, predefined-time disturbance observer, predefined-time fault-tolerant control