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为了提高光纤偏振模色散(PMD)补偿系统的动态自适应补偿能力,提出了用改进粒子群优化(PSO)算法作为搜索算法,用改进单纯形法(ISM)作为跟踪算法的反馈控制算法设计方案,从而实现对PMD补偿单元的动态调整。在PSO算法中,引入免疫克隆(IC)原理提高了搜索算法的全局优化能力;对SM的反射操作和扩张操作进行改进,从而提高算法的收敛速度;用映射操作代替原有的顶点代换操作,从而使单纯形在迭代过程中不发生退化现象。实验结果证明了该算法用于PMD补偿系统的有效性和可行性。
In order to improve the dynamic adaptive compensation ability of the PMD compensation system, a design scheme of the feedback control algorithm based on improved particle swarm optimization (PSO) algorithm as search algorithm and improved simplex method (ISM) as tracking algorithm , So as to realize the dynamic adjustment of PMD compensation unit. In the PSO algorithm, the introduction of immune cloning (IC) principle to improve the global optimization ability of search algorithm; SM operation on the reflection and expansion operations to improve, so as to improve the convergence rate of the algorithm; mapping operation instead of the original vertex substitution , So that the simplex in the iterative process does not occur degradation. Experimental results demonstrate the effectiveness and feasibility of this algorithm for PMD compensation system.