基于FBG应变花的发射平台行走装置在线监测研究  

On-Line Monitoring Research of Launching Platform Walking Device Based on FBG Strain Rosette

作　　者：朱超杰 孝春成[1] 刘砚涛[1] 吴彦增 郝培言 丁文祺[1] ZHU Chao-jie;XIAO Chun-cheng;LIU Yan-tao;WU Yan-zeng;HAO Pei-yan;DING Wen-qi(Beijing Institute of Structure and Environment Engineering,Beijing,100076,China;Beijing Institute of Electronic System Engineering,Beijing 100854,China)

机构地区：[1]北京强度环境研究所,北京100076 [2]北京电子工程总体研究所,北京100854

出　　处：《强度与环境》2022年第2期1-7,共7页Structure & Environment Engineering

基　　金：国家自然科学基金(12173060)。

摘　　要：作为火箭转运和发射过程中的关键承载部位,行走装置是发射平台结构健康监测的重点关注对象,因此需要在线监测结构关键部位的应变等物理参数。传统的电阻应变花存在传输线路复杂、不抗电磁干扰、长期稳定性差等缺陷,难以适应在发射平台等恶劣环境的应变监测需要。本文基于FBG构造了三向应变花,搭建了行走装置光纤应变监测系统,完成了发射平台转运等过程中的应力监测,同时验证了系统的长期稳定性。系统有效解决了FBG温度补偿和在发射环境下存活的问题,适用于发射平台应力状态在线监测,具备一定的应用价值。As the key bearing part in the process of rocket transportation and launch,the walking device is an important object of structural health monitoring of the launch platform.Therefore,it is necessary to monitor the stress and other physical parameters of key parts of the structure on-line.The traditional resistance strain rosette has some defects,such as redundant transmission line,no resistance to electromagnetic interference,poor long-term stability and so on.In this paper,a three-dimensional strain rosette was constructed based on FBG,an optical fiber strain monitoring system of walking device is built,the stress monitoring in the process of transfer of launch platform is completed,and the long-term stability of the system is verified.The system effectively solved the problem of FBG temperature compensation and survivability in the launch environment.It is suitable for on-line monitoring of stress state of launch platform,and has certain application value.

关 键 词：FBG 应变花 行走装置 在线监测 

分 类 号：V443[航空宇航科学与技术—飞行器设计]