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Acta Aeronautica et Astronautica Sinica ›› 2023, Vol. 44 ›› Issue (S1): 727642-727642.doi: 10.7527/S1000-6893.2022.27642

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Stability augmentation control of thrust-vectored V/STOL aircraft based on L1 adaptive control

Runchang HU1, Zian WANG2, Yongliang CHEN1(), Dapeng ZHOU3, Dapeng YANG3, Zheng GONG1   

  1. 1.Key Laboratory of Unsteady Aerodynamics and Flow Control,Ministry of Industry and Information Technology,College of Aerospace Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing  210016,China
    2.China Academy of Launch Vehicle Technology,Beijing  100076,China
    3.Shenyang Aircraft Design and Research Institute,Shenyang  110000,China
  • Received:2022-06-17 Revised:2022-07-11 Accepted:2022-07-21 Online:2023-06-25 Published:2022-08-08
  • Contact: Yongliang CHEN E-mail:chenyl79@nuaa.edu.cn
  • Supported by:
    Aeronautical Science Foundation of China(2019ZA052001)

Abstract:

To solve the problem of control quantity coupling and redundancy in the power system conversion process during the take-off and landing transition stage of the Vertical/Short Takeoff and Landing (V/STOL) aircraft, the corresponding inner loop stability augmentation controller and control allocation strategy are designed. A power system model and a dynamic model with lift loss are established by using the empirical formula of jet effect. Based on the conventional nonlinear dynamic inverse control of the outer loop, the L1 adaptive controller is designed as the inner loop stability augmentation control to compensate the mismatch and uncertainty in the system. According to control redundancy, a control allocation strategy is designed based on the efficiency allocation criterion. Control decoupling is realized, and simulation is carried out for verification. The simulation results of Monte Carlo shooting show that the controller can track the reference input well even if there is a large parameter perturbation, indicating that the controller designed in this paper has good control performance and robustness.

Key words: thrust vector, stability augmentation control, L1 adaptive control, control allocation, Monte Carlo shooting

CLC Number: