激光自适应光学系统可靠性改进效果评估  

Evaluation of reliability improvement effect on laser adaptive optics systems

作　　者：贾启旺 李新阳[1,2,3] 罗曦 甘永东[1,2,3] 马瑞浩 梅月[1,2,3] 斯那卓玛 Jia Qiwang;Li Xinyang;Luo Xi;Gan Yongdong;Ma Ruihao;Mei Yue;Sinazhuoma(National Key Laboratory of Optical Field Manipulation Science and Technology,Chinese Academy of Sciences,Chengdu 610209,China;The Key Laboratory on Adaptive Optics,Chinese Academy of Sciences,Chengdu 610209,China;Institute of Optics and Electronics,Chinese Academy of Sciences,Chengdu 610209,China)

机构地区：[1]中国科学院光场调控科学技术全国重点实验室,成都610209 [2]中国科学院自适应光学重点实验室,成都610209 [3]中国科学院光电技术研究所,成都610209

出　　处：《强激光与粒子束》2024年第6期24-33,共10页High Power Laser and Particle Beams

基　　金：中国科学院创新基金项目(CXJJ-16S022)。

摘　　要：随着自适应光学技术在激光领域的发展,工程上以经典自适应光学(AO)系统为基础,增加了多种基于软件监测和硬件保护的改进措施以保证激光AO系统稳定连续出光。面对结构复杂度提升带来的可靠性挑战,如何构建系统失效模型对激光AO系统可靠性进行评估,成为影响激光AO系统发展的重要一环。本文以激光光稳净化AO系统为例,提出使用动态故障树方法对激光AO系统可靠性进行评估,根据设备间动态关系建立动态故障树(DFT),结合厂家信息、疲劳寿命试验与历史数据估计得到底事件失效率,使用二元决策图和马尔可夫模型求解得到DFT的可靠性参数。使用DFT分析增加改进措施的AO系统可靠运行时间,结果相对于基本故障树获得了十倍以上的提高。实际系统调试期间,在预计的可靠运行时间内未发生自因故障,与DFT估计结果一致。验证了应用DFT方法评估增加改进措施后的激光AO系统可靠性更准确。With the development of adaptive optics(AO)technology in laser field,a variety of improvementmeasures based on software monitoring and hardware protection have been added to the classical AO system to ensurestable and continuous light output of laser AO system.Facing the reliability challenge brought by the increase ofstructural complexity,how to build a system failure model to evaluate the reliability of laser AO system has become animportant part of the development of laser AO system.In this paper,a dynamic fault tree(DFT)method is proposed toevaluate the reliability of laser AO system,and the dynamic fault tree is established according to the dynamicrelationship between the equipment.The bottom event failure rate is estimated by combining the manufacturerinformation,fatigue life test and historical data.The reliability parameters of DFT are obtained by using binarydecision graph and Markov model.Using DFT to analyse the reliable running time of the AO system with theimprovement measures,the result shows more than ten times improvement relative to the basic fault tree.In the actualsystem joint commissioning,no self-induced failure occurred during the expected reliable running time,which isconsistent with the DFT estimate.It is proved that the reliability evaluation of laser AO system with improvementmeasures is more accurate by using DFT method.

关 键 词：自适应光学 动态故障树 可靠性评估 马尔可夫模型 

分 类 号：TN249[电子电信—物理电子学]