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。

When the transverse force was measured by using fiber Bragg grating (FBG),some parameters,hard to be measured,influenced severely the reflective spectral model of FBG. Therefore,ant colony algorithm was proposed in analyzing the traverse uniform strain reflective spectral model of FBG. Base on the traverse uniform strain sense theory of FBG and ants algorithm,the objective function in analyzing traverse uniform strain reflective spectrum of FBG is established,meanwhile corresponding experimental system is constructed. Aiming at the parameters combination from the experimental results,traverse loaded reflective spectrum of FBG is reconstructed using the ant colony algorithm. Experimental data showed that ant colony algorithm used in analyzing of traverse uniform strain reflective spectrum expression of FBG,had some advantages,such as high accuracy,stability and fast convergence rate. And some main parameters influenced the reflective spectrum could obtained easily.