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Acta Aeronautica et Astronautica Sinica

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Adaptive optimal control for the hypersonic morphing vehicles considering performance constraints

  

  • Received:2025-06-09 Revised:2025-11-18 Online:2025-11-20 Published:2025-11-20
  • Contact: Yu-Xin Liao

Abstract: An adaptive optimal control method for hypersonic morphing vehicles with performance constraints is proposed considering the strong nonlinearity, large uncertainties and multi-source external disturbances during the morphing process. Firstly, the steady-state controller is designed based on adaptive prescribed performance control. The singularity problem of fixed performance function is solved by designing an adaptive scaling strategy. Furthermore, the optimal compensation controller is designed based on adaptive dynamic programming, which can be realized through offline-online policy iteration. The offline policy iteration enhances the stability of the network in the initial stage of online updates. The online policy iteration enhances the robustness of the optimal compensation controller by introducing the zero-sum game. Finally, the stability of the closed-loop system is analyzed based on Lyapunov stability theorems. Simulation results show that the proposed method improves the transient and steady-state performance of the vehicle system. The results also illustrate that the proposed method improves the robustness and adaptability to uncertainties and external disturbances during morphing flight process.

Key words: hypersonic morphing vehicles, performance-prescribed control, adaptive dynamic programming, policy iteration, zero-sum game

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