| 基于图像分形的故障特征提取方法 |
| |
| 引用本文： | 刘学东.基于图像分形的故障特征提取方法[J].华北航天工业学院学报,2008(5):4-6. |
| |
| 作者姓名： | 刘学东 |
| |
| 作者单位： | 华中科技大学; |
| |
| 摘 要： | 提出了一种图像分形的故障特征提取方法。介绍了分形维数的理论计算公式，分析了计盒维数的计算方法。对现场测试的柴油机爆燃阶段振动信号波形图像和切片Wigner高阶矩谱图像进行了分形维数计算。研究结果表明柴油机缸套活塞不同磨损状态的分形维数差异明显，能够表征不同状态的特征参数。
|
| 关 键 词： | 图像分形 故障诊断 计盒维数 时频图像 |
A Fault Feature Extraction Method Based on Fractal Image |
| |
| LIU Xue-dong.A Fault Feature Extraction Method Based on Fractal Image[J].Journal of North China Institute of Astronautic Engineering,2008(5):4-6. |
| |
| Authors: | LIU Xue-dong |
| |
| Institution: | LIU Xue-dong(Huazhong University of Science , Technology,Wuhan 430000,China) |
| |
| Abstract: | In this paper the fault feature extraction method based on fractal image is put forward.Theoretical calculation formulas of fractal dimension are introduced.The calculation method about box-counting dimension based on image processing is analyzed.The vibration signals measured from diesel engine in the stage of deflagrate are analyzed with slide Wigner higher order moment spectrum.Then the dimensions of fractal image extracted from the signal waves and the wigner higher order moment spectrums are calculated... |
| |
| Keywords: | fractal dimension fault diagnosis box-counting time-frequency image |
| 本文献已被 CNKI 维普 等数据库收录！ |
