风力机叶片表面应变的光纤光栅检测方法研究

王炳楷; 孙文磊; 王宏伟; 武园园

doi:10.13433/j.cnki.1003-8728.20200268

风力机叶片表面应变的光纤光栅检测方法研究

doi: 10.13433/j.cnki.1003-8728.20200268

新疆大学机械工程学院，乌鲁木齐　830047

基金项目: 国家自然科学基金项目（51565055）与新疆维吾尔自治区科技支疆项目（2017E0276）

详细信息

作者简介:
王炳楷（1993−），硕士研究生，研究方向为机械系统运行状态监测与故障诊断。497637149@qq.com

通讯作者:
孙文磊，教授，博士生导师，sunwenxj@163.com

中图分类号: TKK511
计量
- 文章访问数: 86
- HTML全文浏览量: 32
- PDF下载量: 4
- 被引次数: 0
出版历程
- 收稿日期: 2020-06-02
- 刊出日期: 2021-11-05

Study on Detection Method of Blade Surface Strain Wind Turbine With Fiber Bragg Grating

School of Mechanical Engineering, Xinjiang University, Urumqi 830047, China

摘要

摘要: 以风力发电机叶片为研究对象，提出风力机叶片表面应变的光纤光栅（Fiber Bragg Grating，FBG）检测方法。通过数值模拟得到叶片表面应变分布规律，以此设计光纤光栅检测方法，并开展叶片表面应变检测实验。通过对实验结果和仿真数据进行对比、分析，验证所提检测方法的可行性与有效性。结果表明：光纤光栅传感器结构轻简、信噪比高；该检测方法能够实现快速准确地检测风力机叶片表面应变变化。
- 风力发电机 /
- 叶片 /
- 光纤光栅 /
- 应变检测
Abstract: An approach to detect the blade surface strain of wind turbine with Fiber Bragg Grating (FBG) is proposed. The distribution of blade surface strain is obtained via the numerical simulation. The detection method with FBG is designed and the experiment of blade surface strain detection is carried out. The feasibility and effectiveness of this method are verified by comparing the experimental results with the simulated. The results show that structure of FBG sensor is light and simple with high signal-to-noise ratio. And the present approach can detect the blade surface strain of wind turbine quickly and accurately.
- wind turbine /
- blade /
- FBG /
- strain detection

HTML全文

图 1 叶片表面应变仿真计算结果

下载: 全尺寸图片幻灯片

图 2 FBG布设方案示意

下载: 全尺寸图片幻灯片

图 3 叶片表面应变检测现场

下载: 全尺寸图片幻灯片

图 4 光纤光栅传感单元结构

下载: 全尺寸图片幻灯片

图 5 光纤光栅布置现场

下载: 全尺寸图片幻灯片

图 6 加载前后叶片表面应变随时间变化

下载: 全尺寸图片幻灯片

图 7 应变沿展向分布

下载: 全尺寸图片幻灯片

图 8 载荷力对不同测点的应变影响曲线

下载: 全尺寸图片幻灯片

图 9 载荷位置对不同测点的应变影响曲线

下载: 全尺寸图片幻灯片

图 10 不同载荷情况对叶片调节时间的影响曲面

下载: 全尺寸图片幻灯片

表 1 风力机叶片参数

密度/(kg·m⁻³) 长度/m 泊松比剪切弹性模量/MPa 杨氏模量/MPa 体积模量/MPa

1950 2.38 0.22 5500 13420 7988.1

下载: 导出CSV

表 2 叶片固有频率

阶次 1 2 3 4 5

频率/Hz 7.32 18.89 27.61 58.16 82.73

下载: 导出CSV

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