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基于三维叶尖间隙的叶片裂纹动力响应特征分析与诊断方法

黄鑫 张小栋 张英杰 熊逸伟 刘洪成 范博超

黄鑫,张小栋,张英杰,等.基于三维叶尖间隙的叶片裂纹动力响应特征分析与诊断方法[J].航空动力学报,2022,37(9):1923‑1935. doi: 10.13224/j.cnki.jasp.20220030
引用本文: 黄鑫,张小栋,张英杰,等.基于三维叶尖间隙的叶片裂纹动力响应特征分析与诊断方法[J].航空动力学报,2022,37(9):1923‑1935. doi: 10.13224/j.cnki.jasp.20220030
HUANG Xin,ZHANG Xiaodong,ZHANG Yingjie,et al.Dynamical response feature analysis based on 3⁃dimensional blade tip clearance and diagnosis method for blade crack[J].Journal of Aerospace Power,2022,37(9):1923‑1935. doi: 10.13224/j.cnki.jasp.20220030
Citation: HUANG Xin,ZHANG Xiaodong,ZHANG Yingjie,et al.Dynamical response feature analysis based on 3⁃dimensional blade tip clearance and diagnosis method for blade crack[J].Journal of Aerospace Power,2022,37(9):1923‑1935. doi: 10.13224/j.cnki.jasp.20220030

基于三维叶尖间隙的叶片裂纹动力响应特征分析与诊断方法

doi: 10.13224/j.cnki.jasp.20220030
基金项目: 

国家自然科学基金 52175117

中国航发四川燃气涡轮研究院外委课题 GJCZ⁃0820⁃21

详细信息
    作者简介:

    黄鑫(1993-),男,博士生,主要研究方向为航空发动机光纤动态检测与智能诊断。E⁃mail:1559196486@qq.com

    通讯作者:

    张小栋(1967-),男,教授、博士生导师,博士,主要研究方向为智能检测诊断与控制技术。E⁃mail:xdzhang@mail.xitu.edu.cn

  • 中图分类号: V232

Dynamical response feature analysis based on 3⁃dimensional blade tip clearance and diagnosis method for blade crack

  • 摘要:

    将裂纹叶片三维动力响应分析与参数识别方法相结合,分析不同裂纹叶片状态下三维叶尖间隙(3⁃dimensional blade tip clearance,3D⁃BTC)动力响应参量的信息熵特征,并利用稀疏滤波从不同参量信息熵分布中无监督学习叶片裂纹的多尺度动力响应特征,实现裂纹叶片在运行过程中响应变化特征的信息熵定量描述。在此基础上,利用支持向量机(support vector machine,SVM)的强非线性映射能力建立多尺度响应特征空间与状态空间之间复杂映射。经试验证实,所提方法能实现叶片裂纹损伤程度的定量诊断,达到100%的诊断准确率,远优于其他方法,且诊断结果稳定性好。

     

  • 图 1  稀疏滤波模型结构

    Figure 1.  Architecture of sparse filtering model

    图 2  3⁃D BTC动力模型

    Figure 2.  3D⁃BTC dynamic model

    图 3  测点分布方式

    Figure 3.  Distribution method of measurement points

    图 4  不同测点3D⁃BTC响应参量变化趋势

    Figure 4.  Change tendency of 3D⁃BTC response parameters in different measurement points

    图 5  裂纹叶片动力特征提取示意图

    Figure 5.  Diagram of dynamical features extraction for crack blade

    图 7  小波包能量谱相对分布

    Figure 7.  Relative energy distribution of WPT

    图 8  不同叶片状态下小波包能量谱熵变化趋势

    Figure 8.  Change tendency of wavelet energy entropy under different blade conditions

    图 9  不同裂纹叶片动力特征变化趋势

    Figure 9.  Change tendency of dynamical features under different conditions of crack blade

    图 10  所提方法流程图

    Figure 10.  Diagram of proposed method

    图 11  3⁃D BTC检测试验装置

    Figure 11.  Experimental device for acquiring 3D⁃BTC

    图 12  不同状态裂纹叶片

    Figure 12.  Different conditions for crack blade

    图 13  训练样本数对诊断结果的影响

    Figure 13.  Diagnosis results using different numbers of training samples

    图 14  不同方法10次测试准确率

    Figure 14.  Testing accuracy of different methods for 10 times tests

    图 15  不同方法对叶片不同状态的F1score评价

    Figure 15.  F1score evaluation for different blade health condtions using different methods

    图 16  不同方法在某一测试集的诊断结果模糊矩阵

    Figure 16.  Confusion matrix for diagnostic results in a certain testing sets using different methods

    图 17  不同方法高维特征可视化图

    Figure 17.  High dimensional features visualization using different methods

    表  1  叶片健康状态说明

    Table  1.   Description for health conditions of blades

    类别标签健康状态训练集测试集工况参数
    1无裂纹250750转速:1 500、2 000、2 500、3 000 r/min;最大叶片线速度:125.66 m/s;采样频率:10 kHz;采集时间:120 s
    22 mm裂纹250750
    34 mm裂纹250750
    46 mm裂纹250750
    下载: 导出CSV

    表  2  本文所提方法与对比方法性能比较

    Table  2.   Performance comparison among proposed method and other methods

    方法SF+WPTEESF+WPTEE(无EEMD)SF+RSBPNNSAEIDBN
    数值标准差数值标准差数值标准差数值标准差数值标准差数值标准差
    准确率100087.273.5859.001.7483.060.9656.083.5649.713.48
    精确率100088.865.2671.023.2087.381.3857.616.8129.873.08
    召回率100087.326.5959.003.7083.092.5256.087.2165.601.88
    F1score100086.924.9055.342.5982.532.7655.115.9040.103.11
    下载: 导出CSV
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  • 收稿日期:  2022-01-18
  • 网络出版日期:  2022-10-14

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