| 齿轮局部损伤振动信号的循环平稳性分析 |
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| 引用本文： | 商铁军, 张文明, 刘立, 冯志鹏, 白佳宾. 齿轮局部损伤振动信号的循环平稳性分析[J]. 工程科学学报, 2009, 31(3): 388-393. DOI: 10.13374/j.issn1001-053x.2009.03.045 |
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| 作者姓名： | 商铁军 张文明 刘立 冯志鹏 白佳宾 |
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| 作者单位： | 1.北京科技大学车辆工程研究所, 北京 100083 |
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| 基金项目： | 教育部留学回国人员科研启动基金 |
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| 摘 要： | 针对齿轮局部损伤故障振动信号的特点,在对其数学模型进行循环平稳性理论分析的基础上,定义并解释了幅值调制能量比系数概念及其算法.通过仿真分析,基于信号累积量的循环相关分析算法不仅能完整地保留信号中的周期成分,还具有较好地抑制加性平稳噪声的优点,利于幅值调制能量比系数指标的提取.实验表明,结合齿轮运转的样本数据,幅值调制能量比系数值随着齿轮局部损伤程度的加大而增大.该方法可以发现齿轮在运转中某轮齿发生的局部损伤故障及损伤程度.
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| 关 键 词： | 齿轮 故障诊断 累积量 循环平稳 |
| 收稿时间： | 2008-04-22 |
Vibration signals of gear damage based on cyclostationary |
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| SHANG Tie-jun, ZHANG Wen-ming, LIU Li, FENG Zhi-peng, BAI Jia-bin. Vibration signals of gear damage based on cyclostationary[J]. Chinese Journal of Engineering, 2009, 31(3): 388-393. DOI: 10.13374/j.issn1001-053x.2009.03.045 |
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| Authors: | SHANG Tie-jun ZHANG Wen-ming LIU Li FENG Zhi-peng BAI Jia-bin |
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| Affiliation: | 1.Institute of Vehicular Engineering, University of Science and Technology Beijing, Beijing 100083, China |
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| Abstract: | The concept of amplitude modulation energy ratio coefficient was defined and an algorithm for the coefficient was explained on the base of cyclostationarity analysis on the mathematical model of gear damage vibration signals. Simulation analysis indicates that the method based on cumulant cyclic correlation is effective in suppressing additive stationary noise and in extracting modulation information. Experimental data of localized gear damage was analyzed and the results show that the energy ratio coefficient increases with increasing damage degree in slightly localized gear damage. This coefficient can be used to indicate the localized gear damage degree. |
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| Keywords: | gear fault diagnosis cumulant cyclostationary |
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