小型化便携式压电导波结构健康监测系统设计  

Design of miniaturized and portable structural health monitoring system for piezoelectric guided wave

作　　者：丁睿 邱雷[1] Ding Rui;Qiu Lei(Research Center of Structural Health Monitoring and Prognosis,State Key Lab of Mechanics and Control of Mechanical Structures,Nanjing University of Aeronautics and Astronautics Nanjing 210016,China)

机构地区：[1]南京航空航天大学机械结构力学及控制国家重点实验室结构健康监测与预测研究中心,南京210016

出　　处：《国外电子测量技术》2021年第6期64-70,共7页Foreign Electronic Measurement Technology

基　　金：国家自然科学基金创新群体项目(51921003);江苏省重点研发计划(BE2018123);江苏省六大人才高峰(GDZB-035);教育部霍英东青年教师基金(161048);江苏高校优势学科建设工程项目资助。

摘　　要：飞行器结构健康监测对保障飞行安全、降低飞行器维护成本具有重要意义,压电导波结构健康监测技术由于对小损伤敏感、可在线或离线监测,应用前景广阔。针对飞行器结构地面快速监测应用,研制了一种小型化便携式的压电导波结构健康监测系统。首先提出了一种分层设计的总体架构,并对系统的软硬件设计展开了研究,系统设计体积仅为273 mm×184 mm×59 mm,重量小于3 kg,支持32个传感器通道,激励电压幅值可达140 V_(pp),最大采样率60 MS/s。最后开展了系统应用验证实验,实现了对金属结构裂纹扩展的准确监测。Aircraft structural health monitoring is of great significance to ensure flight safety and reduce aircraft maintenance costs. Piezoelectric guided wave-based structural health monitoring technology is sensitive to small damage and can be applied to online and offline monitoring, so it has a broad application prospect. In this paper, aiming at the ground rapid monitoring application of aircraft structure, a miniaturized and portable piezoelectric guided wave-based structure health monitoring system is developed. Firstly, a hierarchical design architecture is proposed, and the hardware and software design of the system is studied. The design volume of the system is only 273 mm×184 mm×59 mm, the weight is less than 3 kg, it can support 32 sensor channels, the excitation voltage amplitude can reach 140 V_(pp), and the maximum sampling rate can reach 60 MS/s. Finally, the system realized the accurate monitoring of crack propagation of metal structure through the application verification.

关 键 词：飞行器 结构健康监测 导波 压电传感器 系统集成 小型化 

分 类 号：TP302[自动化与计算机技术—计算机系统结构]