A parameter optimization method and device for a metamaterial unit structure

Abstract

The invention discloses a parameter optimization method and a parameter optimization device for metamaterial unit structure. The parameter optimization method of the metamaterial unit structure comprises the steps: S1, selecting random numbers in preset parameter space, wherein each random number serves as a grain, S2, calculating fitness value of the grains and recording a global optimum value among the fitness value, S3, sequencing the grains according to the fitness value of the grains, selecting high fitness value grains as optimum grains, while the other grains are inferior grains, S4, reselecting random numbers according to the optimum grains, S5, enabling inferior grains to fly to the current global optimum value direction and / or areas of pre-unselected random numbers, S6, updating the global optimum value and accepting grains with lower fitness value than current optimum fitness value according a preset probability, and S7, repeating the above steps to obtain a grain with a best x-best as a matching result. By means of the parameter optimization method and the parameter optimization device for the metamaterial unit structure, the grain which complies best with the design requirement is searched through auto-match, the whole process can be controlled by a computer, and problems that study and design of metamaterials are manually adjusted only by experience and effect is low are solved.

Description

technical field [0001] The invention relates to the field of metamaterials, in particular to a parameter optimization method and device for a metamaterial unit structure. Background technique [0002] "Metamaterial" refers to some artificial composite structures or composite materials with extraordinary physical properties that natural materials do not have. Through the orderly design of the structure on the key physical scale of the material, the limitation of some apparent natural laws can be broken through, so as to obtain the supernormal material function beyond the ordinary nature inherent in nature. [0003] To obtain the ideal "metamaterial", the choice of "material" is crucial. The mathematical description of the electromagnetic properties of metamaterial structural units is an indispensable and important link in the process of automatic design of metamaterials. [0004] However, the current research and design of metamaterials is still at the stage of manual adjus...

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Problems solved by technology

[0005] The technical problem to be solved by the embodiments of the present invention is to provide a method and device for optimizing the parameters of the metamaterial unit structure, which can optimize the microstructure parameters of the electromagnetic characteristics of the metamaterial unit structure, and find the particles that best meet the design requirements through automatic matching. The whole process can be controlled by computer, which overcomes the problem of inefficiency in the current research and design of metamaterials based on experience and manual adjustment

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