Research on aerodynamic parameter identification of micro spoilers for spin stabilized trajectory correction projectiles

DOI:	10.11809/bqzbgcxb2023.08.030
Keywords:	spin stabilized projectile; trajectory correction projectile; micro spoiler; parameter identification; differential evolution algorithm; adaptive mutation operator
Abstract:	For a spin stabilized trajectory correction projectile controlled by a micro spoiler, in order to find a reasonable and efficient control scheme design, the aerodynamic parameters of the micro spoiler must be obtained as accurately as possible, so it is necessary to carry out a micro spoiler aerodynamic parameter identification research for trajectory correction projectiles. The overall scheme and flow of micro spoiler parameter identification are constructed on the basis of the flight dynamics model considering the additional force and moment of the micro spoiler, the objective function is established by using the least square criterion, with the axial force coefficient, normal force coefficient and static moment coefficient as the parameters to be identified, and with the differential evolution algorithm containing adaptive mutation operators as the global optimization tool. The simulation results show that the proposed scheme can effectively identify the aerodynamic parameters of the micro spoiler, and the measurement data noise has a certain influence on the parameter identification accuracy.
Published:	2023-08-28
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