Fiber sensor used in detecting radial vibration of high rotating speed shaft

JIN Yuan-qiang; LIU Li-hua; MA Hui-ping; YANG Le-min

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Fiber sensor used in detecting radial vibration of high rotating speed shaft

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- Fiber sensor used in detecting radial vibration of high rotating speed shaft
- Optics and Precision Engineering Vol. 15, Issue 1, Pages: 95-99(2007)
- 作者机构：
  
  哈尔滨工业大学机电工程学院,黑龙江哈尔滨,150001
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN253
- Received：07 March 2006，
  
  Revised：29 September 2006，
  
  Published Online：30 January 2007，
  
  Published：30 January 2007
- 稿件说明：
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JIN Yuan-qiang, LIU Li-hua, MA Hui-ping, et al. Fiber sensor used in detecting radial vibration of high rotating speed shaft[J]. Optics and precision engineering, 2007, 15(1): 95-99.
DOI：

JIN Yuan-qiang, LIU Li-hua, MA Hui-ping, et al. Fiber sensor used in detecting radial vibration of high rotating speed shaft[J]. Optics and precision engineering, 2007, 15(1): 95-99. DOI：

摘要

采用光纤测量技术实现航空叶轮泵高速转轴径向振动的检测

对检测系统的工作原理做了详细介绍。设计了新型的光纤测头

提出相应的补偿方案

并对补偿机理进行了详细的分析。对测试系统的特性进行了研究

得出位移特性调制函数表达式

给出了仿真曲线。理论计算和仿真分析表明

该测试系统能有效地消除因光源光强波动、光纤弯曲损耗、表面反射率等因素对输出特性的影响

可以在叶轮泵内部电磁干扰严重和高温等恶劣环境下实现对高速转轴径向振动的检测。实验测试结果表明

随着转轴转速由1 000 r/min提高到10 000 r/min

径向振动幅值单调增加

这与实际情况相符合。

Abstract

Optical fiber measuring technique is adopted to detect radial vibration of a high speed rotating shaft in aerial impeller pump and the principle of the detecting system is introduced in detail in this paper. A new type fiber gauge head has been developed

and relevanted compensatory approach is given. Also

the displacement characteristic modulating function is educed and the emulator curve is provided through studying of the system. Experimental results show that the system can eliminate the infection from light intensity fluctuation

fiber flexural loss and surface reflection index and detect the radial vibration of high speed rotating shaft in aerial impeller pump under the surrounding of strong electromagnetic interference and high temperature. Experiments also show that amplitude of radial vibration increases monotonously with rotation speed of the shaft ranging from 1 000 r/min to 10 000 r/min

it agrees with the physical situation.

关键词

Keywords

references

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. YUAN L B.The analysis of the compensation mechanism of a fiber-optic displacement sensor [J].Sensors and Actuat.:A,1993,36(3):177-182.

. 马惠萍,刘丽华,杨乐民,等. 平行光束反射光强调制型光纤位移传感器研究[J]. 光学学报,2002,23(2):176-181. MA H P,LIU L H,YANG L M,et al.. Fiber optic displacement sensors based on the principle of collimated beam reflective intensity modulation[J]. Acta Optica Sinica,2002,23(2):176-181.(in Chinese)

. 刘丽华,车仁生,李建新,等. 三层反射式同轴光纤束位移传感器设计[J]. 光学精密工程,2005,13(增):25-29. LIU L H,CHE R SH,LI J X,et al.. Design of reflective fiber displacement sensor with three-layer coaxial fiber bundle[J].Opt.Precision Eng.,2005,13(Supp.):25-29.(in Chinese)

. 杨华勇,吕海宝. 反射面形状对反射式光纤位移传感器理论特性的影响[J]. 光学精密工程,2002,10(4):379-382. YANG H Y,LU H B. Influence on the intensity modulation of a reflective fiberoptic displacement sensor induced by reflector shape[J]. Opt. Precision Eng.2002,10(4):379-382.(in Chinese)

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Related Institution

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Research Center for Optical Fiber Sensing， Institute of Intelligent Sensing

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