Optical-fiber-based dynamic measurement system for 3D tip clearance of rotating blades

被引：11
|
作者：
Zhang, Xiaodong [1 ,2 ]
Xiong, Yiwei [1 ]
Xie, Siying [1 ]
Liu, Hongcheng [1 ]
机构：
[1] Xi An Jiao Tong Univ, Sch Mech Engn, 28 Xianning West Rd, Xian 710049, Shaanxi, Peoples R China
[2] Xi An Jiao Tong Univ, Key Lab, Educ Minist Modern Design & Rotor Bearing Syst, 28 Xianning West Rd, Xian 710049, Shaanxi, Peoples R China
来源：
OPTICS EXPRESS | 2019年 / 27卷 / 22期
基金：
中国国家自然科学基金;
关键词：
VIBRATION; BUNDLE;
D O I：
10.1364/OE.27.032075
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
This paper proposes a dynamic model for measuring the 3D tip clearance of rotating blades using an isosceles-right-triangle sensing structure consisting of three identical two-circle coaxial optical fiber bundles and a demodulation approach using the ratios of difference signals between any two bundles based on the Taylor expansion principle. The dynamic system comprising the optical fiber probe, hardware circuits, and measurement software is designed and established according to the characteristics of dynamic sensing signals. Finally, the feasibility of the system for the dynamic measurement of 3D tip clearance is experimentally verified using the simulated blades of a rotor test bench. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
引用
收藏
页码：32075 / 32095
页数：21
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