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| 基于非线性分析的复杂机电系统故障特征提取 | |
| 引用本文： | 杨勇,张帅,韩清凯,曲衍怀. 基于非线性分析的复杂机电系统故障特征提取[J]. 沈阳农业大学学报, 2009, 40(6) |
| 作者姓名： | 杨勇 张帅 韩清凯 曲衍怀 |
| 作者单位： | 1. 沈阳农业大学,信息与电气工程学院,沈阳,110866 2. 东北大学,机械与自动化学院,沈阳,110004 3. 东华大学,信息与科学技术学院,上海,201600 |
| 摘 要： | 针对复杂机电系统振动信号呈现复杂非平稳性的特点,采用Hilbert-Huang变换(HHT)和基于小波包分解的频带能量比例非线性分析方法,对机电转子系统碰摩和不对中故障试验信号进行分析.分析结果表明:基于非线性分析的HHT和小波包频带能量比例方法弥补了原有传统频谱分析的不足,可以清晰的表征故障的瞬时和局部特性,实现故障特征的有效提取. |
| 关 键 词： | 复杂机电系统 非线性分析 故障特征提取 Hilbert-Huang变换 |
Fault Feature Extraction of Complex Electromechanical System Based on Nonlinear Analysis |
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| YANG Yong,ZHANG Shuai,HAN Qing-kai,QU Yan-huai. Fault Feature Extraction of Complex Electromechanical System Based on Nonlinear Analysis[J]. Journal of Shenyang Aricultural University, 2009, 40(6) | |
| Authors: | YANG Yong ZHANG Shuai HAN Qing-kai QU Yan-huai |
| Abstract: | According to the non-stability of vibration signals in complex electromechanieal system, applying modem nonlinear analytical theory and method and combining Hilbert-Huang transform and the power ratio analysis of different frequency bands with wavelet packet decomposition we studied the rub-impact and misalignment fault experiment vibration signals of an electromechanical rotor system. The results showed that aforementioned analytical approaches could offset deficiency of the traditional spectral analysis and could present fault signals instantaneous/ local characteristic clearly to achieve efficiency extraction of fault properties. |
| Keywords: | complex electromechanical system nonlinear analysis fault feature extraction Hilbert-Huang transform |
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