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论文:2015,Vol:33,Issue(2):251-258 |
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引用本文： |
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杨永生, 张优云, 朱永生. 基于多核非负矩阵分解的机械故障诊断[J]. 西北工业大学学报 |
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Yang Yongsheng, Zhang Youyun, Zhu Yongsheng. The Fault Diagnosis Technology of Mechanical Equipment Based on Multi-Kernel Non-negative Matrix Factorization(MKNMF)[J]. Northwestern polytechnical university |
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| 基于多核非负矩阵分解的机械故障诊断 |
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| 杨永生1,2, 张优云1, 朱永生1 |
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1. 西安交通大学机械工程学院, 陕西西安 710049;
2. 陕西省行政学院计算机系, 陕西西安 710068 |
| 摘要: |
| 在机械设备故障诊断研究领域中,系统采集的原始监测数据经过处理得到的结果往往是数据量很大,维数很高的图像数据,因此,从高维图像中获取敏感特征是当前故障诊断领域中面临的一项关键技术。本文提出了基于多核非负矩阵分解的机械设备故障诊断方法,该方法克服了传统故障诊断需对机械设备信号进行特征提取而造成信息丢失,通过应用多核非负矩阵分解方法进行降维,然后结合多核支持向量机实现对降维后的数据直接进行识别。实验证明该方法可降低原始数据特征的维数,提高分类运算的效率以及故障诊断的识别率。 |
| 关键词:
多核非负矩阵分解
支持向量机
故障诊断
数据降维
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| The Fault Diagnosis Technology of Mechanical Equipment Based on Multi-Kernel Non-negative Matrix Factorization(MKNMF) |
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| Yang Yongsheng1,2, Zhang Youyun1, Zhu Yongsheng1 |
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1. College of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049 China;
2. Department of Computer Engineering, Shaanxi Academy of Governance, Xi'an 710068 China |
| Abstract: |
| In the fault diagnosis field of mechanical equipment, the result of analyzing the collected monitoring data from the equipment is often the high dimensionality of images which contain mass data; so the method of extracting sensitive feature from the high-dimensional information or image is a key technology. We present a new method for fault diagnosis of mechanical equipment based on Multi-Kernel Non-negative Matrix Factorization (MKNMF), which overcomes the defect that the traditional fault diagnosis of mechanical equipment requires signal feature extraction this defect causes loss of information; we reduce dimensions for high dimension information through applying Multi-Kernel Non-negative Matrix Factorization method and then distinguish the dimensionality reduction data with Multi-Kernel Support Vector Machine (MKSVM). The experiments and their analysis show preliminarily that this method can reduce the dimensions of the original monitored data and improve the recognition rate of machine fault diagnosis. |
| Key words:
computational efficiency
data acquisition
equipment
factorization
failure analysis
feature extraction
flowcharting
genetic algorithms
matrix algebra
optimization
pixels
schematic diagrams
support vector machines
data dimensionality reduction
fault diagnosis
MKNMF(Multi-Kernel Non-negative Matrix Factorization)
MKSVM (Multi-Kernel Support Vector Machine)
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| 收稿日期: 2014-09-14
修回日期:
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| DOI: |
| 基金项目: 国家科技重大专项(2012ZX04005-011)资助 |
| 通讯作者:
Email： |
| 作者简介: 杨永生(1963-),陕西省行政学院教授、博士研究生,主要从事故障诊断与模式识别研究。
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