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受一些不易测得的参数对光纤光栅反射谱型的影响,应用光纤布拉格光栅(FBG)测量横向作用力很困难,为此提出将蚁群算法应用于FBG横向均匀受压反射谱型的分析。基于FBG横向均匀受压传感理论和蚁群算法的原理,建立了光栅横向均匀受力反射谱分析的目标函数,并构建光纤光栅横向应力实验系统进行光纤光栅横向受力实验;针对影响算法的参数进行仿真实验,根据实验结果选择合适的参数组合,然后应用蚁群算法对FBG横向载荷下的反射谱进行了重构。实验结果表明,蚁群算法在FBG横向均匀受压反射谱的分析中不仅具有精度高、稳定性好、收敛速度快等优点,而且能分析得出对FBG横向均匀受压反射谱中一些不易测量的主要影响参数。
It is very difficult to measure the lateral force by fiber Bragg grating (FBG) due to the influence of some hard-to-measure parameters on the FBG reflection spectra. Therefore, the application of ant colony algorithm to the horizontal uniform pressure reflection spectrum of FBG is proposed. Based on the theory of horizontal uniform pressure sensing FBG and the principle of ant colony algorithm, the objective function of the transverse uniform force reflection spectrum analysis is established, and the transverse stress experiment system of optical fiber grating is constructed to test the transverse force of fiber grating. Parameters of the simulation experiment, according to the experimental results to select the appropriate combination of parameters, and then use the ant colony algorithm to reflect the FBG transverse load was reconstructed. The experimental results show that the ant colony algorithm not only has the advantages of high precision, good stability and fast convergence in the analysis of transverse uniform compressive reflection spectrum of FBG, but also analyzes some difficult measures The main influence parameters.