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Acta Aeronautica et Astronautica Sinica ›› 2023, Vol. 44 ›› Issue (15): 528764-528764.doi: 10.7527/S1000-6893.2023.28764

• Flight Mechanics and Guidance Control • Previous Articles    

Prescribed performance guidance law with field-of-view and impact angle constraints

Haojian LI1,2, Yuanhe LIU1,2, Yangang LIANG1,2, Kebo LI1,2()   

  1. 1.College of Aerospace Science and Engineering,National University of Defense Technology,Changsha  410072,China
    2.Hunan Key Laboratory of Intelligent Planning and Simulation for Aerospace Missions,Changsha  410072,China
  • Received:2023-03-30 Revised:2023-04-24 Accepted:2023-05-15 Online:2023-05-18 Published:2023-05-17
  • Contact: Kebo LI E-mail:likeboreal@nudt.edu.cn
  • Supported by:
    National Natural Science Foundation of China(12002370)

Abstract:

To address the problem of guided missiles against non-maneuvering targets, a prescribed performance guidance law with seeker Field-of-View (FOV) and impact angle constraints is proposed. Firstly, a prescribed time performance function is designed to enable direct setting of the convergence time, the upper and lower bounds of the tracking error. Through error transformation, the tracking error control problem under performance boundary constraints is transformed into an unconstrained stable control problem. Secondly, the guidance law is designed as the sum of a pure proportional guidance term and a bias term. The bias term is derived based on the optimal error dynamics method to control the transformation error within a bound, ensure that the tracking error consistently converges within the performance boundary, and ultimately achieve terminal impact angle constraint. Furthermore, based on the proposed guidance law, the in-depth analysis of the parameters in the performance function is conducted, and reasonable parameters ranges are provided. Moreover, considering seeker FOV limitation and moving target scenario, an auxiliary function and the predicted interception point concept are introduced to improve the guidance law respectively, which realize the FOV constraint and the extension of proposed law against moving target. Finally, the effectiveness of the proposed guidance law is verified through numerical simulations.

Key words: guided missiles, impact angle control, prescribed performance control, optimal error dynamics, field-of-view constraint, predicted interception point

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