计量学报2026，Vol.47Issue(5)：657-661,5.DOI:10.3969/j.issn.1000-1158.2026.05.03
基于阻抗匹配与电涡流效应的刚性曲面轴径向位移无线测试方法
Wireless Measurement Method of Radial Displacement of Rigid Curved Surface Shaft Based on Impedance Matching and Eddy Current Effect
摘要
Abstract
Mismatch and displacement induced by mechanical failures of aero-engine components under high-temperature conditions will lead to operational abnormalities,which seriously threaten flight safety.To realize the operational condition monitoring of rigid curved shafts in aero-engines under harsh environments,a wireless radial displacement measurement method for rigid curved shafts based on impedance matching and eddy current effect is proposed.The sensor probe is fabricated by screen printing and high-temperature sintering processes.The displacement signal is wirelessly transmitted to the network analyzer through electromagnetic coupling between the probe and the rigid curved shaft,where variations in displacement will result in corresponding changes in S11(return loss).Test results show that under normal temperature conditions,the displacement exhibits a strictly monotonic relationship with S11 within the range of 0～15 mm,which verifies the feasibility of this method for wireless displacement measurement of rigid curved shafts.Under the high-temperature environment of 200℃,the displacement sensor achieves a resolution of 10 µm,with a maximum repeatability error of 1.16%and a maximum relative error of 1.19%.关键词
几何量计量/径向位移/阻抗匹配/电涡流效应/刚性曲面轴/无线测量Key words
geometric metrology/radial displacement/impedance matching/eddy current effect/rigid curved shaft/wireless measurement分类
通用工业技术引用本文复制引用
张文平,李晨,苗静..基于阻抗匹配与电涡流效应的刚性曲面轴径向位移无线测试方法[J].计量学报,2026,47(5):657-661,5.基金项目
国家自然科学基金(52275552) （52275552）
电子测试技术重点实验室开放基金项目(2024-DZCSJS-06) （2024-DZCSJS-06）
中国航发集团产学研合作项目(HFZL2020CXY019) （HFZL2020CXY019）
天津大学精密测量技术与仪器国家重点实验室项目(pilab2206) （pilab2206）
