阵列光纤激光器可靠性冗余策略研究

Study on reliability redundancy strategies of arrayed fiber lasers

为了提高阵列光纤激光器的可靠度,本文利用k/n(G)表决模型灵活性和高容错的特点,使用冷储备单元,对光纤阵列进行几余设计,从而实现在激光器输出功率可控的前提下使用寿命得到提升。k/n:M(G)冷备表决系统包含n个工作单元,M个冷储备单元,当至少有k个单元正常工作时系统正常工作。本文结合5光模块可控阵列光纤激光器,建立3/5:2(G)冷备表决系统的等效模型,对不同余策略下的光纤激光器的可靠度和平均寿命进行求解,然后根据最佳策略对表决系统进行优化,最后利用蒙特卡罗仿真试验证明方法的正确性与可行性。

To enhance the reliability of array fiber output lasers,the flexibility and high fault tolerance of the k/n(G)voting model are exploited,and the redundant design of the fiber array is carried out by using a cold reserve unit,so as to achieve the service life enhancement under the premise of controllable laser output power.The k/n:M(G)cold standby voting system consists of n working units and M cold standby units,and the system works normally when at least k units work properly.In this paper,a 3/5:2(G)cold standby voting system equivalent model is established by combining a 5-module controllable array fiber laser,the reliability and average lifespan of the fiber laser under different redundancy strategies are solved,and then the voting system is optimized according to the best strategy.Finally,the Monte Carlo simulation test is used to prove the correctness and feasibility of the method.