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Time Cooperative Reentry Guidance for Hypersonic Vehicle based on DDPG-LQR
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Zhifei SONG1, 2, Yuehui JI1, 2, Yu SONG1, 2, Junjie LIU1, 2, Qiang GAO1, 2
Missiles and Space Vehicles | 2025, 48(1) : 57 - 64
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Missiles and Space Vehicles | 2025, 48(1): 57-64
• Guidance, Navigation and Control •
Time Cooperative Reentry Guidance for Hypersonic Vehicle based on DDPG-LQR
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Zhifei SONG1, 2, Yuehui JI1, 2, Yu SONG1, 2, Junjie LIU1, 2, Qiang GAO1, 2
Affiliations
  • 1School of Electrical Engineering and Automation,Tianjin University of Technology,Tianjin,300384
  • 2Tianjin Key Laboratory of Control Theory and Application for Complex Systems,Tianjin,300384
Published: 2025-02-25 doi: 10.7654/j.issn.2097-1974.20250108
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Aiming at the characteristics of multiple hypersonic vehicles cooperative combat, a time cooperative reentry guidance scheme based on deep deterministic policy gradient and linear quadratic regulator (DDPG-LQR) is proposed. Firstly, the sequential convex programming method is used to generate the time cooperative reentry trajectory satisfying multiple constraints and its corresponding steady-state control quantity. The Radau pseudospectral method is used to discretize the motion equations to improve the discretization accuracy of trajectory optimization. Secondly, the linear quadratic regulator (LQR) is used to track the time cooperative reentry trajectory. In order to improve the cooperative guidance accuracy and guidance effect, the deep deterministic policy gradient (DDPG) is used to optimize the weight matrix coefficients of the LQR online. In the DDPG algorithm, the optimization performance of the algorithm is improved by introducing an appropriate reward function. The simulation results show that the cooperative guidance scheme proposed has better cooperative guidance effect and guidance accuracy than the traditional LQR controller in the case of initial state error and uncertainty.

multiple hypersonic vehicles  /  cooperative guidance  /  sequential convex programming  /  deep deterministic policy gradient  /  linear quadratic regulator
Zhifei SONG, Yuehui JI, Yu SONG, Junjie LIU, Qiang GAO. Time Cooperative Reentry Guidance for Hypersonic Vehicle based on DDPG-LQR[J]. Missiles and Space Vehicles, 2025 , 48 (1) : 57 -64 . DOI: 10.7654/j.issn.2097-1974.20250108
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Year 2025 volume 48 Issue 1
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Article Info
doi: 10.7654/j.issn.2097-1974.20250108
  • Receive Date：2024-05-14
  • Online Date：2025-07-21
  • Published：2025-02-25
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  • Received：2024-05-14
  • Revised：2024-08-21
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Affiliations
    1School of Electrical Engineering and Automation,Tianjin University of Technology,Tianjin,300384
    2Tianjin Key Laboratory of Control Theory and Application for Complex Systems,Tianjin,300384
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光柄菇属 Pluteus 5 2.39
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栓菌属 Trametes 5 2.39
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