中国光学（中英文）2025，Vol.18Issue(1)：121-133,13.DOI:10.37188/CO.2024-0136
快速反射镜恒偏差故障观测器设计
Design of constant bias fault observer for fast steering mirrors
摘要
Abstract
Fast steering mirror(FSM)typically operates in harsh environments,susceptible to vibrations,temperature fluctuations,and other factors,which can lead to malfunctions.Focusing on the most prevalent constant bias fault,this paper proposes an LMI-based fault observer design method,aiming to enhance the re-liability of fault detection and strengthen the stability and anti-interference capabilities of the FSM.Firstly,the model identification method based on Hankel matrix is employed to identify the two-axis fast steering mirror model including the coupling effect.Then,the fault model of the fast steering mirror system is estab-lished,and the fault observer of the fast steering mirror is designed by using the LMI-based method.Finally,the proposed method is verified through simulations and experiments.The results indicate that when both axes of the fast steering mirror have constant bias faults in the actuators and sensors,the Riccati-based fault observer can only detect the fault in one axis,while the LMI-based fault observer can detect faults within 0.1 seconds after the fault of the X-axis occurs,and detect faults within 0.06 seconds after the fault of the Y-axis occurs.Therefore,the fault observer designed by the LMI method proposed in this paper can improve the fault detection performance of the fast steering mirror.关键词
快速反射镜/恒偏差故障/模型辨识/线性矩阵不等式/故障观测器Key words
fast steering mirror/constant bias fault/model identification/linear matrix inequality/fault ob-server分类
计算机与自动化引用本文复制引用
李智斌,潘嘉男,孙崇尚,吴佳彬..快速反射镜恒偏差故障观测器设计[J].中国光学（中英文）,2025,18(1):121-133,13.基金项目
国家自然科学基金(No.U23A20336,No.52227811) （No.U23A20336,No.52227811）
山东省自然科学基金(No.ZR2021QF140,No.ZR2021QF117,No.ZR2024MF133) （No.ZR2021QF140,No.ZR2021QF117,No.ZR2024MF133）
青岛西海岸新区"一事一议"人才项目资助Supported by National Natural Science Foundation of China(No.U23A20336,No.52227811) （No.U23A20336,No.52227811）
Natural Sci-ence Foundation of Shandong Province(No.ZR2021QF140,No.ZR2021QF117,No.ZR2024MF133) （No.ZR2021QF140,No.ZR2021QF117,No.ZR2024MF133）
"One Matter,One Discussion"Talent Project of Qingdao West Coast New Area （）
