传感技术学报2026，Vol.39Issue(8)：1709-1713,5.DOI:10.3969/j.issn.1004-1699.2026.08.004
电容式叶尖间隙测量系统带宽测量方法
Bandwidth Measurement Method of Capacitance Blade Tip Clearance Measurement System
摘要
Abstract
Blade tip clearance is the key to the efficiency and safety of aeroengines.For high-speed rotating blades,the measurement system of blade tip clearance must have a substantial response bandwidth.In order to measure the response bandwidth range of capacitive type blade tip clearance measurement system,a new bandwidth measurement method is proposed,and a bandwidth measurement device based on analog switch is developed.The developed measurement device generates a variety of frequency change capacitance test signals,and the signals are input into the tip clearance measurement system host through a triaxial cable.The output signals'amplitudes of the system at different test frequencies are compared,and the bandwidth of the blade tip clearance measurement system is obtained.The results show that the-3 dB bandwidth of the blade tip clearance measurement system is better than 5 Hz～230 kHz,which verifies the effectiveness of the proposed method.关键词
叶尖间隙/电容传感器/响应带宽/模拟开关Key words
blade tip clearance/capacitance sensor/response bandwidth/analog switch分类
机械制造引用本文复制引用
李芳怡,牛广越,周笑阳,段发阶,傅骁,蒋佳佳..电容式叶尖间隙测量系统带宽测量方法[J].传感技术学报,2026,39(8):1709-1713,5.基金项目
国家自然科学基金项目(52575634) （52575634）
天津市自然科学基金联合基金项目(25JCLQJC00180) （25JCLQJC00180）
精密测试技术及仪器全国重点实验室开放基金项目(Pilab2510) （Pilab2510）
国家自然科学基金项目(U2241265,52575633,U25A20292,92360306) （U2241265,52575633,U25A20292,92360306）
高端仪器设备项目(20251.6XT213-001) （20251.6XT213-001）
天津市全国重点实验室重大专项项目(24ZXZSSS00290) （24ZXZSSS00290）
