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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2021, Vol. 42 ›› Issue (4): 524915-524915.doi: 10.7527/S1000-6893.2020.24915

• Electronics and Electrical Engineering and Control • Previous Articles     Next Articles

ADP-based intelligent attitude fault-tolerant control for launch vehicles

LIANG Xiaohui1, HU Changhua2, ZHOU Zhijie2, WANG Qing3   

  1. 1. School of Automation, Northwestern Polytechnical University, Xi'an 710072, China;
    2. College of Missile Engineering, Rocket Force University of Engineering, Xi'an 710025, China;
    3. School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China
  • Received:2020-10-22 Revised:2020-12-18 Published:2021-01-26
  • Supported by:
    National Natural Science Foundation of China (61833016, 61873295, 61933010)

Abstract: This paper investigates the problem of attitude control for the launch vehicle with actuator faults. An Adaptive Dynamic Programming (ADP) based intelligent fault-tolerant control scheme is developed, which mainly includes two parts: the stable control part and optimization supplementary part. For the stable control part, the adaptive control technology and the sliding mode variable structure control are used to maintain stability of the fault-tolerant controller, so as to guarantee the stalibilty of the close-loop system and finite-time convergence of the tracking errors. An optimization supplementary controller with the actor-critic structure is also designed to further improve the attitude tracking performance and provide additional compensation control according to the tracking errors caused by actuator faults or external disturbances. The simulation results show that the proposed method can ensure the system stablility and accurate tacking of commands even when there exist malfunctions.

Key words: launch vehicle, attitude control system, intelligent fault-tolerant control, Adaptive Dynamic Programming (ADP), actuator fault

CLC Number: