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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2021, Vol. 42 ›› Issue (6): 324751-324751.doi: 10.7527/S1000-6893.2020.24751

• Electronics and Electrical Engineering and Control • Previous Articles     Next Articles

Parameter optimization of proportional navigation guidance for 2D trajectory correction projectile with fixed canards

CAO Lifei1, CAO Hongsong1, LIU Pengfei1, LIU Hengzhu1, XIAO Yanwen2   

  1. 1. College of Mechatronics Engineering, North University of China, Taiyuan 030051, China;
    2. Unit 32381, PLA, Beijing 100071, China
  • Received:2020-09-14 Revised:2020-10-15 Online:2021-06-15 Published:1900-01-01

Abstract: To solve the problems of limited control force of the 2D correction mechanism with fixed canards and the overload variation required at the end of the control section by the Proportional Navigation Guidance (PNG), an overload threshold control strategy based on the PNG is proposed. The control forces and moments of the correction mechanism are analyzed. With the objective function of the minimum distance between the projectile and target, the longitudinal and transverse planar guidance coefficients and overload thresholds are selected as the design variables, and a parameter optimization model is established based on the PNG. The model is then optimized by the Differential Evolution (DE) algorithm. Finally, the control strategy proposed is compared with the traditional PNG in terms of flight stability, control efficiency, control mechanism overload, and control accuracy by external ballistic simulation, and the effectiveness of the control strategy is also verified by the Monte-Carlo method. The results show that compared with the traditional PNG, the control strategy proposed can improve the flight stability of the control section and reduce the overload at the end of the control section of the 2D ballistic correction projectile.

Key words: fixed canards, proportional navigation guidance, optimal design, differential evolution, flight stability

CLC Number: