电容式叶尖间隙测量系统带宽测量方法OA
Bandwidth Measurement Method of Capacitance Blade Tip Clearance Measurement System
旋转叶片叶尖间隙是决定发动机工作效率和运行安全的关键参数,高速旋转叶片要求叶尖间隙测量系统具有较大的响应带宽.为测量电容式叶尖间隙测量系统响应带宽范围,提出了一种新型带宽测量方法,研制了基于模拟开关的带宽测量装置,产生多种频率的变化电容测试信号,经三同轴电缆将信号输入叶尖间隙测量系统主机,对比不同测试频率下系统输出信号幅值,获取叶尖间隙测量系统带宽.结果表明,叶尖间隙测量系统的-3 dB 带宽优于5 Hz～230 kHz,验证了提出方法的有效性.
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.
李芳怡;牛广越;周笑阳;段发阶;傅骁;蒋佳佳
天津大学精密测试技术及仪器全国重点实验室,天津 300072天津工业大学控制科学与工程学院,天津 300387中国航发沈阳发动机研究所,辽宁 沈阳 110015天津大学精密测试技术及仪器全国重点实验室,天津 300072天津大学精密测试技术及仪器全国重点实验室,天津 300072天津大学精密测试技术及仪器全国重点实验室,天津 300072
机械制造
叶尖间隙电容传感器响应带宽模拟开关
blade tip clearancecapacitance sensorresponse bandwidthanalog switch
《传感技术学报》 2026 (8)
1709-1713,5
国家自然科学基金项目(52575634)天津市自然科学基金联合基金项目(25JCLQJC00180)精密测试技术及仪器全国重点实验室开放基金项目(Pilab2510)国家自然科学基金项目(U2241265,52575633,U25A20292,92360306)高端仪器设备项目(20251.6XT213-001)天津市全国重点实验室重大专项项目(24ZXZSSS00290)
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