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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2021, Vol. 42 ›› Issue (11): 524849-524849.doi: 10.7527/S1000-6893.2020.24849

• Article • Previous Articles     Next Articles

Anti-disturbance attitude control for post-capture non-cooperative spacecraft

LIU Chuang1,2, YUE Xiaokui1,2   

  1. 1. School of Astronautics, Northwestern Polytechnical University, Xi'an 710072, China;
    2. National Key Laboratory of Aerospace Flight Dynamics, Northwestern Polytechnical University, Xi'an 710072, China
  • Received:2020-10-09 Revised:2020-12-20 Published:2021-01-14
  • Supported by:
    National Natural Science Foundation of China (62103336, 11972026, U2013206); Natural Science Foundation of Shaanxi Province (2020JQ-132); China Postdoctoral Science Foundation (2020M683571); Young Talent Fund of Shaanxi Association for Science and Technology (2021-1-2); the Science and Technology Foundation of National Key Laboratory of Aerospace Flight Dynamics (6142210200310); the Fundamental Research Funds for the Central Universities (3102019HTQD007)

Abstract: For the attitude stabilization control problem of post-capture non-cooperative spacecraft with unknown and uncertain inertial parameters, a novel anti-disturbance attitude control method is proposed based on an intermediate state observer, while considering multiple disturbances and control input magnitude and rate constraints. The traditional attitude stabilization control methods often need known information on the inertial parameter and state of the flexible spacecraft. If the above information is unknown, it will be difficult to achieve attitude stabilization with high precision, and it will be easy to cause the control input to be not able to meet the restricted requirements. To solve this problem, considering the control input magnitude and rate constraints, an anti-disturbance control method is proposed based on an intermediate state observer. The observer is constructed by introducing an auxiliary variable using the state information and lump disturbance, and a novel anti-disturbance controller is then designed. The Lyapunov stability analysis method is used to prove that the designed controller can ensure the global asymptotic stability of the closed-loop system. Compared with the existing mixed H2/H controller, the developed controller does not require the attitude and modal information of the flexible body, and the identification process of inertial parameters either. Finally, simulation comparisons further verify the effectiveness and superiority of the designed controller.

Key words: non-cooperative spacecraft, space post-capture, attitude control, anti-disturbance control, vibration suppression

CLC Number: