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首页> 外文期刊>Optical fiber technology >An edge-filter FBG interrogation approach based on tunable Fabry-Perot filter for strain measurement of planetary gearbox
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An edge-filter FBG interrogation approach based on tunable Fabry-Perot filter for strain measurement of planetary gearbox

机译：一种基于调谐法布林 - 珀罗滤波器的边缘过滤器FBG询问方法，用于行星齿轮箱应变测量

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摘要

Fiber Bragg gratings (FBGs), with smaller size, are suitable to measure the tooth root strain of ring gear which is an ideal signal for fault diagnosis of planetary gearboxes. In order to identify the fault features in the strain signal, a high-speed and high-resolution FBG interrogator is needed. Compared with wavelength-scanning interrogation approach, the edge-filter approach can achieve such a performance more easily and economically. However, conventional edge-filter approaches based on fixed edge filters have low applicability. The adoption of a tunable Fabry-Perot filter (TFP) increases the flexibility of the edge-filter system, but the creep characteristics of the piezoelectric actuator in TFP may cause interrogation errors. This paper proposes an improved TFP-based edge-filter FBG interrogation approach with creep control ability. First, the interrogation principle of the proposed approach is analyzed by comparing with the conventional edge-filter approaches. The creep control method is presented by employing a feedback channel and two kinds of TFP driving voltage. Next, a FBG interrogator based on the proposed approach is established. The creep control performance, static interrogation performance and dynamic interrogation performance are all tested. The results show that the interrogator has the wavelength repeatability of similar to 0.1 pm at 1 kHz and similar to 0.2 pm at 5 kHz respectively. Finally, the proposed edge-filter approach is applied to measure the tooth root strain of ring gear in a planetary gearbox. The measured strain signal has a high quality, and the tooth fault feature can be identified obviously.
机译：光纤布拉格光栅（FBG），具有更小的尺寸，是适用于测量环形齿轮的齿根应变其是用于行星齿轮箱的故障诊断的理想信号。为了鉴定在应变信号故障特征，需要一个高速和高分辨率FBG询问。与波长扫描探询方法相比，边缘过滤器的方法可以更容易地和经济地实现这样的性能。然而，传统的边沿滤波器方法的基础上的固定边缘过滤器具有低的适用性。一个可调谐的法布里 - 珀罗滤光器（TFP）的通过提高边缘过滤系统的灵活性，但在TFP压电致动器的蠕变特性可能会导致询问错误。本文提出了与蠕变控制能力的改进的基于TFP-边沿滤波器FBG询问的方法。首先，该方法的询问原理是通过与常规边沿滤波器接近比较进行分析。蠕变控制方法是通过使用反馈信道和两种TFP驱动电压的呈现。接下来，根据所提出的方法一个FBG询问成立。蠕变控制性能，静态询问性能和动态性能的审讯都进行测试。该结果表明，该询问器具有在1kHz类似于下午12点01分，并在分别为5千赫类似于下午12点02分的波长可重复性。最后，所提出的边沿滤波器的方法是用于测量在一行星齿轮箱环形齿轮的齿根的应变。所测量的应变信号具有高品质，并且齿故障特征可以明显被识别。

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  • 来源
    《Optical fiber technology》 |2020年第12期|102379.1-102379.9|共9页
  • 作者

    Zhang Xiaodong; Niu Hang; Hou Chenggang; Di Fagui;

  • 作者单位

    Xi An Jiao Tong Univ Key Lab Educ Minist Modern Design & Rotor Bearing Syst Xian 710049 Peoples R China;

    Xi An Jiao Tong Univ Key Lab Educ Minist Modern Design & Rotor Bearing Syst Xian 710049 Peoples R China;

    Xi An Jiao Tong Univ Key Lab Educ Minist Modern Design & Rotor Bearing Syst Xian 710049 Peoples R China;

    Xi An Jiao Tong Univ Key Lab Educ Minist Modern Design & Rotor Bearing Syst Xian 710049 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Fiber Bragg grating; Tunable Fabry-Perot filter; Edge filter; Piezoelectric actuator; Creep;

    机译：光纤布拉格光栅;可调式法布里 - 珀罗过滤器;边缘过滤器;压电执行器;蠕动;

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